
Operator's Manual
21" 48V MAX* Lithium-Ion Cordless Mower CLMF4821A
Save this manual for future reference
* Maximum initial battery workload voltage (measured without a workload) is 48 volts (2*24 V).
Nominal voltage is 43.2 volts (2*21.6 V).
Read all safety rules and instructions carefully before operating this tool.
Distributed By: Suzhou Cleva Electric Appliance Co., Ltd.
NO.8 Ting Rong Street 215122 Suzhou - China
Battery Model Number is 24LB4005-CN
Charger Model Number is 24LFC15-ETL

2
Section Page
TABLE OF CONTENTS
TABLE OF CONTENTS 2
SPECIFICATIONS 3
IMPORTANT SAFETY INSTRUCTIONS 4-9
SYMBOLS 10-12
KNOW YOUR LAWN MOWER 13-14
ASSEMBLY 15-21
BATTERY PACK AND CHARGER 22-24
OPERATION 25-28
MAINTENANCE 29-33
ENVIRONMENTALLY SAFE BATTERY DISPOSAL 34
TROUBLESHOOTING 35-36
LAWNMASTER
®
WARRANTY 37
EXPLODED VIEW 38
PARTS LIST 39
NOTES 40

3
SPECIFICATIONS
Type Cordless, Battery-powered
No-load Speed 3200, 3300, 3400 RPM
Deck Width 21" (533 mm)
Cutting Width 20" (505 mm)
Height Adjustments 6 Positions (1.4"-3.4") (35-85 mm)
Functions Mulching Plug, Grass Collection Bag, Side Discharge
Wheel Size 6.70" (170 mm) / 9.25" (235 mm)
Unit Weight (With two 4.0Ah Batteries) 36.2 lbs (16.4 kg)
48V MAX* CORDLESS MOWER
Model Number 24LB4005-CN
Rated Voltage of Battery 24 V Max* D.C.
Capacity of Battery 4.0 Ah
Battery Type Lithium-Ion
BATTERY PACK
BATTERY CHARGER
Model Number 24LFC15-ETL
Charger Input 120 V ~ 60 Hz 120 W
Charger Output 24 V D.C. 4.0 A
150 minutes (For two 24LB4005-CN)
80 minutes (For one 24LB4005-CN)
* Maximum initial battery workload voltage (measured without a workload) is 48 volts (2*24 V).
Nominal voltage is 43.2 volts (2*21.6 V).
Charging Time

4
INTRODUCTION
This product has many features for making its use more pleasant and enjoyable.
Safety, performance, and dependability have been given top priority in the design of this product
making it easy to maintain and operate.
IMPORTANT SAFETY INSTRUCTIONS
This symbol indicates important safety instructions. If these instructions are not followed, it could
endanger the personal safety and/or property of the operator and others. Read and understand all
instructions in this manual before attempting to operate the mower. Failure to comply with these
instructions may result in personal injury.
This mower was built to be operated according to the rules for safe operation that are contained in this
manual. As with any type of power equipment, carelessness or error on the part of the operator can
result in serious injury. This mower is capable of amputating body parts and throwing objects. Failure
to observe the following safety rules could result in serious injury or death.
Use of this mower should be restricted to individuals who have read and understood and will follow the
warnings and instructions that are printed in this manual and on the mower.
LAWNMOWER SAFETY WARNINGS
Read all safety warnings, instructions, illustrations and specications provided with this
lawnmower.
Failure to follow all instructions listed below may result in electric shock, re and/
or serious injury.
1) Work area safety
■ To avoid bystander contact with the moving blade or a thrown object injury,
keep the area of
operation clear of all bystanders, particularly small children.
Stop the lawnmower and any
attachment(s) if anyone enters the area.
Contact with the moving blade or thrown objects
may result in serious personal injury or death.
■ Only operate the lawnmower in daylight or good articial light.
Dark areas invite accidents.
■ Do not operate lawnmowers in explosive atmospheres, such as in the presence of ammable
liquids, gases or dust.
Lawnmowers create sparks which may ignite the dust or fumes.
■ Do not use the lawnmower in bad weather conditions, especially when there is a risk of
lightning.
This decreases the risk of being struck by lightning.
■ Thoroughly inspect the area where the lawnmower is to be used and remove all stones,
sticks, wires, bones, and other foreign objects.
Thrown objects can cause personal injury.
WARNING
DANGER
WARNING
WARNING

5
IMPORTANT SAFETY INSTRUCTIONS
2) Electrical safety
■ Do not expose the lawnmower to rain or wet conditions.
Water entering a lawnmower may
increase the risk of electric shock.
3) Personal safety
■ Use personal protective equipment. Always wear eye protection.
Protective equipment will
reduce personal injuries.
■ Dress properly. Do not wear loose clothing or jewelry. Keep your hair and clothing away from
moving parts.
Loose clothes, jewelry or long hair can be caught in moving parts.
■ While operating the lawnmower, always wear long trousers.
Exposed skin increases the
likelihood of injury from thrown objects.
■ While operating the lawnmower, always wear non-slip and protective footwear. Do not
operate the lawnmower when barefoot or wearing open sandals.
This reduces the chance of
injury to the feet from contact with the moving blade.
■ Prevent unintentional starting. Ensure the switch is in the off position before connecting to
power source and/or batteries, picking up or carrying the lawnmower.
■
Carrying a lawnmower with your nger on the switch or energizing a lawnmower that has the
switch in the on position invites accidents.
■ Remove any adjusting key or wrench before turning the lawnmower on.
A wrench or a key
left attached to a rotating part of the lawnmower may result in personal injury.
■ Always keep proper footing and balance.
This allows for better control of the lawnmower in
unexpected situations.
■ Stay alert, watch what you are doing and use common sense when operating a lawnmower.
Do not use a lawnmower while you are tired or under the inuence of drugs, alcohol or
medication.
A moment of inattention while operating a lawnmower may result in serious
personal injury.
■ Do not let familiarity gained from frequent use of lawnmower allow you to become
complacent and ignore lawnmower safety principles.
A careless action can cause severe
injury within a fraction of a second.
■ To avoid operator blade contact or a thrown object injury, stay in the operator zone behind
the lawnmower handles.
Blade contact or thrown objects may result in serious personal
injury.
■ Do not touch blades and other hazardous moving parts while they are still in motion.
This
reduces the risk of injury from moving parts.
4) Lawnmower use and care
■ Use the lawnmower and accessories in accordance with these instructions, taking into
account the working conditions and the work to be performed.
Use of the lawnmower for
operations different from those intended may result in a hazardous situation.
■ Before using the lawnmower, always visually inspect to see that the blade(s) and the blade(s)
assembly are properly secured and not worn or damaged.
Loose, worn, or damaged parts
may increase the risk of injury.
■ Keep guards and other safety devices in place, properly mounted, and in working order.
A guard or other safety device that is loose, damaged, or is not functioning correctly may
result in personal injury.
■ Keep all cooling air inlets clear of debris.
Blocked air inlets and debris may result in
overheating or risk of re.

6
IMPORTANT SAFETY INSTRUCTIONS
■ Do not use the lawnmower if the switch does not turn it on and off.
Any lawnmower that
cannot be controlled with the switch is dangerous and must be repaired.
■ Do not operate the lawnmower in wet grass. Walk, never run.
This reduces the risk of
slipping and falling which may result in personal injury.
■ Do not operate the lawnmower on excessively steep slopes.
This reduces the risk of loss of
control, slipping and falling which may result in personal injury.
■ Do not force the lawnmower. Use the correct lawnmower for your application.
The correct
lawnmower will do the job better and safer at the rate for which it was designed.
■ Be aware of the mower and attachment discharge direction and do not point the mower
discharge at anyone.
Thrown objects can cause personal injury.
■ Use extreme caution when reversing or pulling the lawnmower towards you.
■ Always be aware of your surroundings.
This reduces the risk of tripping during operation.
■ When working on slopes, always be sure of your footing, always work across the face of
slopes, never up or down and exercise extreme caution when changing direction.
This
reduces the risk of loss of control, slipping and falling which may result in personal injury.
■ Operate the disabling device and/or remove all battery packs, if removable, from the
lawnmower before making any adjustments, changing accessories, or storing the
lawnmower.
Such preventive safety measures reduce the risk of starting the lawnmower
accidentally.
■ Keep handles and grasping surfaces dry, clean and free from oil and grease.
Slippery
handles and grasping surfaces do not allow for safe handling and control of the lawnmower
in unexpected situations.
■ Check the grass catcher frequently for wear or deterioration.
A worn or damaged grass
catcher may increase the risk of personal injury.
■ Before removing the grass catcher, turn off the motor and wait until the blade(s) comes to a
complete stop. The cutting blade(s) continues to rotate after the blade control is released.
Never place any part of the body in the blade(s) area until you are certain the motor is off,
and the blade(s) has stopped rotating.
Contact with the moving cutting blade(s) may result in
serious personal injury.
■ Before unclogging the chute, turn off the motor, wait until the blade(s) comes to a complete
stop, operate the disabling device and/or remove all batteries, if removable. The cutting
blade(s) continues to rotate after the blade control is released. Never place any part of the
body in the blade(s) area until you are certain the motor is off, and the blade(s) has stopped
rotating.
Contact with the moving cutting blade(s) may result in serious personal injury.
■ Before cleaning or inspecting the lawnmower, turn off the motor, wait until the blade(s)
comes to a complete stop, operate the disabling device and/or remove all batteries, if
removable.
Accidental contact with the moving blade and moving parts may result in
personal injury.
■ Maintain the lawnmower and accessories. Check for misalignment or binding of moving
parts, breakage of parts and any other condition that may affect the lawnmower’s operation.
If damaged, have the lawnmower repaired before use.
Many accidents are caused by poorly
maintained lawnmowers.
■ Store idle lawnmowers out of the reach of children and do not allow persons unfamiliar with
the lawnmower or these instructions to operate the lawnmower.
Lawnmowers are dangerous
in the hands of untrained users.

7
IMPORTANT SAFETY INSTRUCTIONS
5) Battery lawnmowers use and care
■ Use lawnmowers only with specically designated battery packs.
Use of any other battery
packs may create a risk of injury and re.
■ Recharge only with the charger specied by the manufacturer.
A charger that is suitable for
one type of battery pack(s) may create a risk of re when used with another battery pack(s).
■ Follow all charging instructions and do not charge the battery pack(s) or lawnmower outside
the temperature range specied in the instructions.
Charging improperly or at temperatures
outside the specied range may damage the battery and increase the risk of re.
■ Do not use a battery pack or lawnmower that is damaged or modied.
Damaged or modied
batteries may exhibit unpredictable behavior resulting in re, explosion or risk of injury.
■ Do not expose a battery pack(s) or lawnmower to re or excessive temperature.
Exposure to
re or temperature above 265°F (130°C) may cause explosion.
■ Under abusive conditions, liquid may be ejected from the battery(ies); avoid contact. If
contact accidentally occurs, ush with water. If liquid contacts eyes, additionally seek
medical help.
Liquid ejected from the battery(ies) may cause irritation or burns.
■ When battery packs are not in use, keep them away from other metal objects, like paper
clips, coins, keys, nails, screws or other small metal objects that can make a connection
from one terminal to another.
Shorting the battery terminals together may cause burns or a
re.
6) Service
■ Have your lawnmower serviced by a qualied repair person using only identical replacement
parts. This will ensure that the safety of the lawnmower is maintained.
Use of parts which
do not meet the original equipment specications may lead to improper performance and
compromise safety.
■ Never service damaged battery packs.
Service of battery packs should only be performed by
the manufacturer or authorized service providers.
MAINTENANCE AND STORAGE
■ Use caution when servicing blades. Wrap the blade(s) or wear gloves. Replace damaged blades.
Do not repair or alter blade(s).
■ Disconnect the battery when not in use, before servicing, and when changing accessories such as
blades.
■ Store the idle lawn mower indoors. When not in use, the lawn mower should be stored in an indoor
dry and locked-up place, out of reach of children.
■ Maintain lawn mower with care. Keep cutting edges sharp and clean for best and safe performance.
■ Do not wash with a hose; avoid getting water in motor and electrical connections.
■ Check the blade and the engine mounting bolts frequently for proper tightness.
■ Keep all nuts, bolts, and screws tight to be sure the equipment is in safe working condition.
■ Check grass collection bag frequently for deterioration and wear, and replace worn bags. Check that
replacement bags comply with the original manufacturer's recommendations or specications.
■ Replace the blade if it is bent or cracked. An unbalanced blade causes vibration that could damage
the motor drive unit or cause personal injury.
■ Clean the blade thoroughly and check its balance by supporting it horizontally on a thin nail through
its center hole. The nail should also be in a horizontal position. If either end of the blade rotates
downward, shave some metal from the heavy or lower end until the blade is balanced. It is balanced
when neither end drops.

8
IMPORTANT SAFETY INSTRUCTIONS
■ Follow instructions for lubricating and changing accessories.
■ Inspect the lawn mower cord periodically and if damaged, have it repaired by an authorized service
facility. Keep handles dry, clean, and free from oil and grease.
■ Keep guards in place and in working order.
■ Keep blades sharp.
■ Keep hands and feet away from cutting area.
■ Objects struck by the lawn mower blade can cause severe injuries to persons. The lawn should
always be carefully examined and cleared of all objects prior to each mowing.
■ If the lawn mower strikes a foreign object, follow these steps:
- Stop lawn mower. Release the switch.
- Disconnect the battery.
- Inspect for damage.
- Repair any damage before restarting and operating the lawn mower.
■ When servicing use only identical replacement parts.
■ Never pull the mower back towards you while you are walking. If you must back the mower away
from a wall or an obstruction, rst look down and behind in order to avoid tripping, and then follow
these steps:
- Step back from the mower in order to fully extend your arms.
- Be sure that you are well balanced.
- Pull the mower back slowly.
BATTERY PACK
■ The battery pack is only compatible with LawnMaster
®
24LFC15-ETL, 24LFC14-ETL, 24LFC02-ETL
or 24LSC01-ETL chargers.
■ Do not charge battery in a damp or wet location. Following this rule will reduce the risk of electric
shock.
■ Do not place battery powered lawn mowers or their batteries near re or heat. This will reduce the
risk of explosion and possibly injury.
■ Do not open or mutilate the battery. Released electrolyte is corrosive and may cause damage to the
eyes or skin. It may be toxic if swallowed.
■ Do not dispose of battery packs in re. They will explode or leak and cause injury. Liquid ejected
from the battery may cause irritation or burns.
■ Do not crush, drop or damage the battery pack. Do not use a battery pack or charger that has been
dropped or received a sharp blow. A damaged battery is subject to explosion. Properly dispose of a
dropped or damaged battery immediately.
■ Batteries can explode in the presence of a source of ignition, such as a pilot light. To reduce the
risk of serious personal injury, never use any cordless product in the presence of open ame. An
exploded battery can propel debris and chemicals. If exposed, ush with water immediately.
■ Do not modify or attempt to repair the lawn mower or the battery pack (as applicable) except as
indicated in the instructions for use and care.
■ All tool services should be performed by a qualied repair person using only identical replacement
parts. This will ensure that the safety of the product is maintained.
BATTERY CHARGER
■ This charger is only compatible with LawnMaster
®
24LB4005-C, 24LB4005-CN, 24LB1304,
24LB2004, 24LB2605, or 24LB4005 lithium-ion batteries.
■ To reduce the risk of injury, charge only the specied lithium-ion rechargeable batteries. Other types
of batteries may burst, causing personal injury or damage.

9
IMPORTANT SAFETY INSTRUCTIONS
■ Keep cord and charger away from heat to prevent damage to housing or internal parts.
■ Do not operate charger with a damaged cord or plug, which could cause shorting and electric shock.
If damaged, immediately discontinue use. Replace the charger with the identical unit as listed in the
Parts List of this manual.
■ Do not use a charger that has been dropped or received a sharp blow.
■ Do not disassemble charger. Take it to a qualied service center for check or replacement. Incorrect
reassembly may result in a risk of electric shock or re.
■ Do not abuse the charger cord. Never use the cord for carrying, pulling or unplugging.
■ Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase
the risk of electric shock. If the charger cord is damaged, replace the charger with an identical
model as listed in this manual.
■ A charger that is suitable for one type of battery pack may create a risk of re when used with
another battery pack.
■ Charge the battery at the normal charging temperature between 40°F (4°C) and 100°F (38°C).
FCC COMPLIANCE
■ This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
- This device may not cause harmful interference, and
- This device must accept any interference received, including interference that may cause
undesired operation.
■
NOTE:
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation.
■ This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that of the receiver.
- Consult the dealer or an experienced radio/ TV technician for help.
SAVE THESE INSTRUCTIONS
Refer to them frequently and use them to instruct others who may use this appliance. If you loan
someone this appliance, loan them these instructions also.

10
SYMBOL NAME DESIGNATION/EXPLANATION
V
Volts Voltage
Direct Current Type or a characteristic of current
A
Amperes Current
Hz
Hertz Frequency (cycles per second)
W
Watts Power
hrs
Hours Time
Class II Construction Double-insulated construction
Safety Alert Precautions that involve your safety
Read The Operator’s
Manual
To reduce the risk of injury, user must read and
understand Operator’s Manual before using this
product.
Do not mow up and
down slopes!
To avoid the risk of injury do not mow up and down
slopes. Always mow across slopes (Angle ≤15°).
Keep all persons and
pets at a safe distance
from the mower while
operating!
To avoid the risk of injury to bystanders keep all
persons and pets at a safe distance from the mower
while operating.
Keep hands and feet
clear of mower deck
and discharge opening
at all times!
Rotating blades can cause serious injury.
Keep hands and feet clear of mower deck and
discharge opening at all times. Always be sure
blade has stopped after releasing switch lever
and disconnecting the batteries before removing
and replacing collection bag, cleaning, servicing,
transporting or lifting the mower.
Stay behind the handle
when the motor is
running!
Objects struck by mower blade can cause serious
injury. Stay behind the handle when the motor is
running. Always ensure persons and pets are clear
of the discharge from the mower while operating.
Keep bystanders away.
WARNING: Beware of thrown objects. Keep
bystanders away.
Disconnect all batteries
before maintenance.
WARNING: Disconnect all batteries before
maintenance.
SYMBOLS
Some of the following symbols may be used on this product. Please study them and
learn their meaning. Proper interpretation of these symbols will allow you to operate
the product better and safer.

11
SYMBOL NAME DESIGNATION/EXPLANATION
Keep hands and feet
away.
Danger: Keep hands and feet away from blade.
Wear hearing and
eye protection
when operating this
equipment.
Safety alert precautions that involve your safety.
Cutting Width Cutting diameter
Lithium-Ion Battery
Recycling
Designates that this tool is in compliance with lithium-
ion battery recycling program requirements.
Keep Away From Water
Do not dispose of battery packs in rivers or immerse
in water.
Keep Away From Fire
Do not dispose of battery packs in explode or leak
and cause injury.
Heat Alert
Do not expose battery packs to heat in excess of
60ºC (140ºF).
Recycle Symbol
This product uses lithium-ion batteries. Local, state
or federal laws may prohibit disposal of batteries in
ordinary trash. Consult your local waste authority
for information regarding available recycling and/or
disposal options.
SYMBOLS
SYMBOL SIGNAL MEANING
DANGER
Indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation, which, if not
avoided, may result in minor or moderate injury.
NOTICE
(Without Safety Alert Symbol) Indicates a situation that may
result in property damage.
The following signal words and meanings are intended to explain the levels of risk
associated with this product.

12
SERVICE
Service requires extreme care and knowledge and should be performed only by a qualied service
technician. When servicing, use only identical replacement parts.
For troubleshooting or replacement, please call Customer Service for assistance (Toll free number
866-384-8432).
SYMBOLS
WARNING
To avoid serious personal injury, do not attempt to use this product until you read thoroughly and
understand completely the Operator’s Manual.
If you do not understand the warnings and instructions in the Operator’s Manual, do not use this
product. Call Customer Service for assistance (Toll free number 866-384-8432).

13
KNOW YOUR LAWN MOWER
19a 19b
1
2
3
4
5
8
9
18
19
6
20
13
11
12
14
15
16
17
7
10
21
22
23
24

14
KNOW YOUR LAWN MOWER
Components
1. Start/Stop Bale Switch
2. Foam Grip
3. Upper Handle
4. Wing Knob (X4)
5. Grass Collection Bag
6. Lower Handle
7. Cutting Height
Adjustment Lever
8. Rear Wheel
9. Deck
10. Front Wheel
11. Side Discharge Chute
12. Side Discharge Door
13. Battery Compartment Cover
14. Carry Handle
15. Safety Flap
16. Control Cable
17. Cable Fasten Strap
18. Safety Switch Button
19. iPower Control Panel
19a. iPower Mower Mode Indicator
19b. iPower Battery Meter Indicator
20. Mulching Plug
21. Battery Release Button
22. Battery Pack (X4)
23. Battery Charger Indicators
24. Battery Charger
KNOW YOUR LAWN MOWER
The safe use of this product requires an understanding of the information on the product and in this Operator’s
Manual as well as a knowledge of the project you are attempting to use. Before use of this product, familiarize
yourself with all operating features and safety rules.

15
ASSEMBLY
UNPACKING
This product requires assembly.
■ Carefully remove the product and any accessories from the box. Make sure that all items listed in
the packing list are included.
■ Inspect the product carefully to make sure no breakage or damage occurred during shipping.
■ Do not discard the packing material until you have carefully inspected and satisfactorily operated
the product.
■ If any parts are damaged or missing, please call Customer Service (Toll free number 866-384-
8432).
YOU WILL NEED (ITEMS NOT SUPPLIED)
■ Suitable Personal Protective Equipment
PACKING LIST
(1) Mower
(1) Mulching Plug (Pre-installed at Rear of Mower)
(1) Grass Collection Bag Assembly (Bag & Metal Frame)
(1) Upper Handle Assembly (Pre-installed with Lower Handles with Wing Knobs)
(2) Lower Handle Assembly
(1) Side Discharge Chute
(2) Wing Knobs with Bolts
(1) 24V Lithium-ion Battery Charger
(4) 24V 4.0Ah Lithium-ion Battery Packs
(1) Operator’s Manual
WARNING
If any parts are damaged or missing do not operate this product until the parts are replaced. Failure to
heed this warning could result in serious personal injury.
WARNING
Do not attempt to modify this product or create accessories not recommended for use with this
product. Any such alteration or modication is misuse and could result in a hazardous condition
leading to possible serious personal injury and will void the warranty.

16
ASSEMBLY
ASSEMBLING THE LOWER HANDLE
1. Unfold the lower handle.
Align the lawnmower housing, lower handle and the wing knob with bolt. Adjust
the lower handle to the desired operating position. There are three possible positions
(Fig. 1).
2. Rotate the wing knobs clockwise to tighten (Fig. 1). Do not use excessive force; this may damage
the knobs.
ASSEMBLING THE UPPER HANDLE
1. Unfold the upper handle assembly.
2. Align the upper handle and lower handle and secure with the wing knobs (Fig. 2).
3. Ensure the cable is secured against the handle frame with the supplied cable fasten strap.
WARNING
Do not connect the batteries before the product is completely assembled. Failure to comply could
result in accidental starting and possible serious personal injury.
WARNING
Never operate the mower without the proper safety devices in place and working. Never operate the
mower with damaged safety devices. Failure to heed this warning can result in serious personal injury.
Fig. 1

17
Fig. 2
ASSEMBLY
ASSEMBLING THE GRASS COLLECTION BAG
Your LawnMaster
®
mower comes with a tool-less collection bag.
1. Check the grass collection bag before assembling to make sure there is no damage.
2. Pull the grass collection bag over the steel frame as shown (Fig. 3).
3. Pry the soft plastic clamping sleeves with your ngers and insert the steel frame into the sleeves as
shown. Ensure all sleeves are properly clamped with your ngers on the frame.
4. The completely assembled collection bag is shown as below (Fig. 4).
INSTALLING AND REMOVING THE GRASS COLLECTION BAG
NOTE:
When using the grass collection bag, do not install the mulching plug. Your mower is supplied with the
mulching plug tted. The mulching plug MUST be removed prior to installing grass collection bag.
Installing the grass collection bag:
1. Lift the rear safety ap and hold it in the position (Fig. 5).
2. Lift the grass collection bag by its handle and hook the rods of collection bag on the mower holder
under rear safety ap (Fig. 5).
3. Release the rear safety ap.
Fig. 3 Fig. 4
Grass Collection Bag
Metal Frame
Sleeve

18
4. Make sure both rods are rmly seated on the holder and rear safety ap rests rmly against the top
of the grass collection bag.
Removing the grass collection bag:
1. Lift the rear safety ap and hold it in position.
2. Lift the grass collection bag by its handle, and unhook the grass collection bag from the mower.
3. Release the rear safety ap.
NOTE:
Under normal usage, the bag material is subject to wear. To reduce the risk of injury, frequently inspect
the bag assembly and replace if there are any signs of wear or deterioration.
ASSEMBLY
WARNING
ATTACHING/REMOVING THE MULCHING PLUG
Do not at any time make any adjustment to the lawn mower without rst stopping the motor and removing the
battery packs. Do not attach the grass collection bag and the mulching plug at the same time.
NOTE:
The mulching plug MUST be removed if grass collection bag is used during mowing operation. The
mulching plug prevents grass from being collected by blocking the collection chute. This allows the grass
clippings to be deposited back on the lawn during cutting.
1. Lift the safety ap and detach the grass collection bag.
2. Lift the safety ap and hold it in position. Insert the mulching plug into the rear discharge chute (Fig.
6). Ensure the locking button snaps into place, as picture shown (Fig. 7).
3. Press the locking button to release and remove the mulching plug (Fig. 8).
Holders
Rods
Fig. 5
Mulching plug must be removed prior to
installing grass collection bag.

19
Fig. 7
Fig. 8
Fig. 6
ASSEMBLY
INSTALLING THE SIDE DISCHARGE CHUTE
Do not at any time make any adjustment to the lawn mower without rst stopping the motor and removing the
battery packs. Ensure the mulching plug is tted when using the side discharge chute. Do not t the collection
bag.
The mower is designed to be able to disperse the clippings back to the lawn when the side discharge chute is
tted. Lift the mulching door and insert the side discharge chute by mounting the support hook onto the metal
spring frame. Release the door back down during operation (Fig. 9). This feature is optional and does not
need to be tted at all times.
WARNING
Fig. 9

20
ADJUSTING THE CUTTING HEIGHT
When shipped, the rear wheels on the mower are set to a low-cutting position. Before using the mower for the
rst time, adjust the cutting position to the height best suited for your lawn. The mower can be set to 6 cutting
heights between 1.4" (35 mm) and 3.4" (85 mm). Choose the proper cutting height according to the types
and conditions of the grass.
To set the cutting height:
1. To raise the cutting height, grasp the cutting height adjustment lever, then move it toward the back of the
mower and engage the lever in the desired cutting height position on the mower deck (Fig. 10).
2 To lower the cutting height, grasp the cutting height adjustment lever, then move it toward the front of the
mower and engage the lever in the desired cutting height position on the mower deck (Fig. 10).
ASSEMBLY
Fig. 10
WARNING
Do not at any time make any adjustment to the lawn mower without rst stopping the motor and
removing the battery packs. Keep your feet away from the mower deck when adjusting its height.

21
INSTALLING / REMOVING THE BATTERY PACKS
NOTE:
Both batteries should be installed into the compartments in order to start the mower.
To install battery packs:
1. Make sure both batteries are fully charged.
2. Lift the plastic battery compartment cover on the top of the mower deck.
3. Align the raised ribs on the mower with the grooves in the battery pack, and then insert the battery packs
into the compartment (Fig. 11).
4. Push the battery packs until you hear a “click”.
5. Close the battery compartment cover.
To remove battery packs:
1. Stop the lawn mower. Lift the battery compartment cover and remove the safety key.
2. Press the release button on the battery pack, grasp the battery pack rmly and pull out of the battery
compartment. Remove the second battery in the same way (Fig. 12).
3. Close the battery compartment cover.
ASSEMBLY
Fig. 11
Fig. 12
WARNING
If any parts are broken or missing, do not attempt to attach the battery packs to the mower or operate
the mower until the broken or missing parts are replaced. Failure to do so could result in serious injury.
Do not connect the batteries and/or the safety key before the product is completely assembled.

22
BATTERY PACK AND CHARGER
BATTERY CHARGING
1. Use only with 24V LawnMaster
®
battery chargers. The battery charger supplied is specically designed for
the lithium-ion batteries used in this tool.
2. Check the power voltage! Battery chargers operate on 120V.
3. The batteries are charged between 40°F (4°C) and 100°F (38°C). This ensures an optimum battery
service life.
4. Protect the batteries from heat, from continuous exposure to sun and keep away from radiation or other
heat sources. Do not leave the batteries in the mower in direct sunlight over long periods.
5. The batteries are supplied partially charged. To ensure full capacity of each battery, charge the batteries
before using the tool for the rst time. The lithium-ion batteries can be charged at any time without reducing
their service life. Interrupting the charging procedure does not affect the batteries.
LED CHARGER STATUS
1. If batteries are not inserted into the charger,
continuous red LED lights
indicate that the outlet plug is
plugged into an outlet socket and the battery charger is ready for operation.
2. Charging:
Flashing green LEDs
on the charger indicate that batteries are charging normally. The LED’s
ashing frequency is 1Hz.
3. Charged: Continuous green LEDs on the charger indicate that batteries are ready for use.
4. Technical Issue:
Flashing red LED lights
on the charger indicates that batteries have a charging problem
or might be defective.
a) One possible condition is the battery temperature is lower than 0°C. As soon as the permitted
temperature is reached, the battery charger will automatically switch to charging.
b) If the temperature range is correct and ashing red LED light continues, then remove and reinstall the
battery pack. If the LED status repeats a second time, try to charge another identical battery. If the battery
charges normally, dispose of the defective battery pack (see Environmental Safe Battery Disposal
section).
c) If the ashing red light continues after installing the second battery, the charger may be defective.
Replace with a new one.
5.
Flashing green LED lights
on the charger (the LED’s ashing frequency (2Hz) is faster than charging
normally (1Hz)), which indicates the battery temperature is higher than 50°C. As soon as the permitted
temperature is reached, the battery charger will automatically switch to charging.
6. After continuous or repeated charging cycles without interruption, the charger may warm up. This is normal
and does not indicate a technical defect of the battery charger.

23
BATTERY PACK AND CHARGER
The indicator lights on the charger show the charger status:
BATTERY LED PANEL
1. The panel consists of 3 LEDs on the battery. Press and hold the button, then release it, the LEDs will show
you the charge levels.
2. The battery’s charge level can be checked either when the battery is attached on the charger/mower or
removed from the charger/mower.
SYMBOL INDICATOR LIGHTS STATUS
Red, continuous Connected to power supply
Green, blinking.
(ashing frequency: 1Hz)
Charging.
Green, blinking.
(ashing frequency: 2Hz)
Battery is overheated.
Green, continuous. Fully charged.
Red, blinking.
(ashing frequency: 2Hz)
Charging problem:
See Technical Issue above
LEDs on Battery
(Continuous
Lighting)
Battery Capacity
3 LEDs
Fully charged
2 LEDs (orange & red)
≥40%
1 LED (red only)
<40% (Recharge required)
Indicator Lights

24
BATTERY PACK AND CHARGER
CHARGING THE BATTERY PACK
If any part of the charger is missing or damaged, do not operate it! Replace the charger with a new one.
Failure to heed this warning could result in possible serious injury.
Check the voltage! The voltage must comply with the information on the rating label.
1. Align the slot of the battery pack with the rail on the charger. Slide the slot onto the rail until the battery
pack secures into place. Connect the second battery in the same way (Fig. 13).
2. Connect the charger to the power supply.
3. Allow sufcient charging time (see Specications), and then disconnect the charger from the power supply.
4. Press the release buttons on the battery packs and remove them from the charger.
NOTE:
It is normal for the battery packs and the charger to become warm (but not hot) during charging
process. If the battery does not charge properly, check to make sure the electrical outlet is operational. Always
charge the battery before storage!
WARNING
Fig. 13

25
Do not allow familiarity with this type of product to make you careless. Remember that a careless
fraction of a second is sufcient to inict serious injury.
Always wear safety goggles or safety glasses with side shields when operating this product. Failure to
do so could result in objects being thrown into your eyes, resulting in possible serious injury.
Do not use any attachments or accessories not recommended by the manufacturer of this product.
The use of attachments or accessories not recommended can result in serious personal injury.
STARTING/STOPPING THE MOWER
1. To switch on, press and hold the safety switch button and gently pull the start/stop bale switch (Fig.
14). Once started, release the safety switch button.
2. To power off the mower, release the start/stop bale switch.
OPERATION
WARNING
WARNING
WARNING
Ⅰ
Ⅱ
Fig. 14

26
OPERATION
IPOWER MOWER MODE INDICATOR (19a) (Fig. 15)
1. By default, the motor power is set to “AUTO” and will automatically adjust to your lawn.
2. Push the press button repeatedly to cycle through the different motor power levels.
• Set the motor power to “1”, if your lawn needs only light mowing.
• Set it to “2”, if you are going to mow taller and thicker grass.
• Set it to “3” to utilize the maximum motor power for mowing the most stubborn grass.
IPOWER BATTERY METER INDICATOR (19b) (Fig. 15)
1. Push the press button to check on the battery status.
2. The number of lights lit will depend on the condition of the battery.
3. 4 lights indicate a fully charged battery, and 1 light indicates that the battery needs to be charged.
Fig. 15
19a 19b
WARNING
A ashing LED on the mower mode control panel indicates that the current is too high. A ashing
LED on the battery indicates that the voltage is too low. In either case the motor will shut down
automatically. Do not continue to activate the On/Off switch if the motor has been shut down
automatically. The battery may be damaged.

27
Fig. 16
GENERAL OPERATION
Check the product, its power cord and accessories for damage before each use. Before use, please
ensure all power connections are in good working order prior to installing battery packs. If damage is
present or observed, please stop and have mower serviced before use.
Do not use the product if it is damaged or shows wear.
1. Double-check that the blade is properly installed.
2. Always hold the product by its handles. Keep the handles dry to ensure safe support.
3. Switch the equipment off immediately if someone enters the work area. Always let the equipment
come to complete stop before removing the grass collection bag.
4. Do not overwork yourself. Take regular breaks to ensure you can concentrate on the work and have
full control over the product.
MOWING TIPS
1. Make sure the lawn is clear of stones, sticks, wires, and other objects that could damage the lawn
mower blades or motor. Such objects could be accidentally thrown by the mower in any direction
and cause serious personal injury to the operator and others.
2. To reduce the chances of disconnecting the lawn mower from the extension cord, be sure to use the
cord retainer provided.
3. For a healthy plot of grass, always cut off one-third or less of the total length of the grass.
4. When cutting heavy grass, reduce walking speed to allow for more effective cutting and a proper
discharge of the clippings.
5. Do not cut wet grass. It will stick to the underside of the deck and prevent proper mulching of grass
clippings.
6. New or thick grass may require a narrower cut.
7. Clean the underside of the mower deck after each use to remove grass clippings, leaves, dirt, and
any other accumulated debris.
8. Mow in slight overlapping rows. The most effective pattern for mowing lawns is in straight lines
along one of the sides. This will keep the rows even and ensure that the lawn is cut without missing
any spots (Fig. 16).
OPERATION

28
OPERATION
MOWING ON A SLOPE (Fig. 17)
1. Slopes are a major factor related to slip and fall accidents that can result in severe injury. Mowing
on slopes requires extra caution. If you feel uneasy on a slope, do not mow it. For your safety, do
not attempt to mow slopes greater than 15 degrees.
2. Mow across the face of slopes, not up and down. Exercise extreme caution when changing direction
on slopes.
3. Watch for holes, ruts, rocks, hidden objects, or bumps which can cause you to slip or trip. Tall grass
can hide obstacles. Remove all objects such as rocks, tree limbs, etc., which could be tripped over
or thrown by the blade.
4. Always be sure of your footing. A slip and fall can cause serious personal injury. If you feel you are
losing your balance, release the start/stop bale switch immediately.
5. Do not mow near drop-offs, ditches, or embankments; you could lose your footing or balance.
Fig. 17
AFTER USE
1. Switch the product off, remove the battery packs and let it cool down.
2. Check, clean and store the product as described below.

29
MAINTENANCE
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from
various types of commercial solvents and may be damaged by their use. Use a clean cloth to remove
dirt, dust, oil, grease, etc.
WARNING
WARNING
When servicing, use only identical replacement parts. Use of any other parts may create a hazard or
cause product damage.
Always wear safety goggles or safety glasses with side shields during power tool operation. If operation
is dusty, also wear a dust mask.
WARNING
Do not use any attachments or accessories not recommended by the manufacturer of this product. The
use of attachments or accessories not recommended can result in serious personal injury.
1. Do not at any time make any maintenance to the lawn mower without rst stopping the motor and
removing the battery packs. Adjust the handle bar or make other adjustments as illustrated in the
manual, if necessary or if it can make it easier for maintenance.
2. Periodically check all nuts and bolts for proper tightness to insure safe operation of the mower.
3. Remove any buildup of grass and leaves on or around the motor cover. Wipe the mower clean with
a dry cloth occasionally. Do not use water.
LUBRICATION
All of the bearings in this product are lubricated with a sufcient amount of high grade lubricant for the
life of the unit under normal operating conditions. Therefore, no further bearing lubrication is required.
At the beginning and end of each mowing season:
1. Lubricate the springs on the rear discharge door with light oil.
2. Lubricate the cutting height adjustment lever and related hardware with light oil.
3. Remove the wheels and lubricate the surface of the axle bolt and the inner surface of the wheels
with light oil.
4. Remove the blade and blade hub assembly and lubricate the motor shaft with light oil or engine oil.
See Replacing the Cutting Blade section for instructions on removing the blade.

30
REPLACING THE MOWER BLADE
NOTE:
Remove the batteries before performing any maintenance!
1. Stop the motor and allow the blade to come to a complete stop.
2. With the blade stopped, remove the BATTERIES from the mower and store in safe location.
3. Remove the grass collection bag from mower if attached.
4. Slowly turn the mower onto its side.
5. Wedge a block of wood between the blade and the mower deck in order to prevent blade from
turning while the blade nut is being removed (Fig. 18).
6. Loosen the blade nut using a wrench or socket (not provided).
7. Remove the blade nut by turning counter-clockwise, and then remove the blade.
8. Place the new blade on the shaft. Make sure it is installed with the curved ends pointing up toward
the mower deck and not down toward the ground.
9. Thread the blade nut on the shaft and nger tighten.
10.Torque the blade nuts down using a torque wrench (not provided) to ensure the bolt is properly
tightened to 16 Nm (Fig. 19).
NOTE:
Make certain all parts are replaced in the exact order in which they were removed.
WARNING
Before performing any maintenance, make sure the mower is switched off and the batteries have been
removed. Failure to heed this warning could result in serious personal injury.
WARNING
Always protect hands by wearing heavy gloves and/or wrapping the cutting edges of the blade with rags
and other material when performing blade maintenance. Failure to heed this warning could result in
serious personal injury.
MAINTENANCE
Fig. 18 Fig. 19
Nuts
Blade
Wooden Block

31
MAINTENANCE
SHARPENING THE BLADE
For best mowing performance, the mower blade must be kept sharp. A dull blade does not cut grass
evenly and overloads the motor. Under normal circumstances, sharpening the blade twice during the
mowing season is usually sufcient. However, if your lawn has sandy soil, more frequent sharpening
may be required.
• Following the instructions in the Replacing The Mower Blade section (Page 30), remove the mower
blade. DO NOT attempt to sharpen the blade while it is attached to the mower.
• Using a ne-tooth le or sharpening stone, sharpen cutting edges on both ends of the blade,
removing equal amounts of material from both ends (Fig. 20).
WARNING
When removing, inspect the blade carefully. If blade is bent or damaged, replace immediately with a
new blade. Failure to replace a bent or damaged blade could cause an accident resulting in possible
serious injury.
BALANCING THE BLADE (Fig. 21)
When sharpening, care should be taken to keep the blade balanced. An unbalanced blade will cause
excessive vibration when the mower is running. This vibration will eventually cause damage to the
mower, especially the motor.
To check the blade balance:
• Clamp a screwdriver horizontally in a vise as shown.
NOTE:
If a vise is not available, a straight nail can also be used.
• Place the center hole of blade on the screwdriver (or nail) shank.
• If blade is balanced, it will remain in a horizontal position. If either end of the blade drops downward,
sharpen the heavy side until the blade is balanced.
Fig. 20 Fig. 21

32
MAINTENANCE
STORING THE MOWER
1. Remove the batteries from the mower..
2. Turn mower on its side and clean grass clippings that have accumulated on the underside of the
mower deck.
3. Wipe the mower clean with a dry cloth.
4. Check all nuts, bolts, knobs, screws, fasteners, etc., for tightness.
5. Inspect moving parts for damage, breakage, and wear. Have repairs made on any damaged or
missing parts.
6. Store mower indoors in a clean, dry place out of the reach of children.
7. Do not store near corrosive materials such as fertilizer or rock salt.
- Remove and clean the grass collection bag.
- Fully loosen the handle locking knobs on the sides of the handle and fold the upper handle down
(Fig. 22).
- The mower can be stored in the upright position to save place (Fig. 23).
Fig. 22
Fig. 23

33
MAINTENANCE
CLEANING THE MOWER
WARNING
To reduce the risk of electric shock, do not expose the mower to water.
WARNING
Do not at any time make any maintenance to the lawn mower without rst stopping the motor and
removing the battery packs.
The underside of mower deck should be cleaned after each use as grass clippings, leaves, dirt and
other debris will accumulate causing rust and corrosion.
• Remove any buildup of grass and leaves on or around the motor cover (do not use water). Wipe the
mower clean with a dry cloth occasionally.
• If debris build up on the underside of the unit while in use, stop the motor and remove the battery
packs. Tilt the mower forward, or on its side, and clean.
BATTERY PACK MAINTENANCE
1. Fully charge the batteries before placing in storage.
2. Recharge the battery packs whenever there is a noticeable reduction in the performance. Do not
allow the battery packs to become completely discharged.
3. Do not recharge a battery pack that is already fully charged. Overcharging shortens battery life.
4. Once the battery packs are fully charged, remove them from the charger and disconnect charger
from the outlet.
5. Do not store the battery packs on the tool or on the charger.
6. If the battery pack is hot, allow it to cool down before recharging.
CHARGER MAINTENANCE
1. Keep the charger clean and clear of debris. Do not allow foreign material into the recessed cavity or
on the contacts. Wipe with a dry cloth. Do not use solvents, water, or place in wet conditions.
2. Always unplug the charger when the battery packs are not installed on the charger.
3. Do not store the charger in excessive heat. Do not use in direct sunlight.
4. Disconnect the charger from the AC power outlet when not in use and once batteries have reached
a full charge.

34
To avoid injury and risk of re, explosion, or electric shock, and to avoid
damage to the environment:
• Cover the battery terminals with heavy-duty adhesive tape.
•
DO NOT
attempt to remove or destroy any of the battery pack components.
•
DO NOT
attempt to open the battery pack.
• If a leak develops, the released electrolytes are corrosive and toxic. DO NOT get the solution in
eyes or on skin, and do not swallow it.
•
DO NOT
place damaged or defective batteries in your regular household trash.
•
DO NOT
incinerate.
•
DO NOT
place batteries where they will become part of any waste landll or municipal solid waste
stream.
• Take batteries to a certied recycling or disposal center.
ENVIRONMENTALLY SAFE BATTERY DISPOSAL
The following toxic and corrosive materials are in the batteries used in this battery pack:
lithium-ion, a toxic material.
WARNING
All toxic materials must be disposed of in a specic manner to prevent contamination of the
environment. Before disposing of damaged or worn out lithium-ion battery packs, contact your local
waste disposal agency, or the local Environment Protection Agency for information and specic
instructions.
WARNING
If the battery pack cracks or breaks, with or without leaks, do not recharge it and do not use it. Dispose
of it and replace with a new battery pack.
DO NOT ATTEMPT TO REPAIR IT!

35
TROUBLESHOOTING
Suspected malfunctions are often due to causes that the user can x themselves.
Therefore check the product using this section. In most cases the problem can be solved quickly.
WARNING
Only perform the steps described within these instructions!
All further inspection, maintenance and repair work must be performed by an authorized service center
or a similarly qualied specialist if you cannot solve the problem yourself!
PROBLEM POSSIBLE CAUSE SOLUTION
Mower fails to start.
The batteries are not installed
correctly.
Check connection of batteries to mower.
The batteries are not charged or
power is too low.
Charge the batteries.
The switch is defective.
Call the toll free helpline, at 866-384-
8432.
The blade is jammed.
Stop mower and remove batteries;
check for grass and debris under the
deck, clean to make blade free to move.
The batteries are defective or
old.
Replace the batteries (call the toll free
helpline, at 866-384-8432).
Mower cuts
unevenly.
Rough or uneven lawn. Check the mowing area.
Cutting height not set properly. Set the mower at a higher position.
The blade is dull. Sharpen or replace the blade.
Mower does not
mulch properly.
Wet grass clippings sticking to
the underside of the deck.
Wait until the grass dries before
mowing.
Missing mulching plug. Install the mulching plug.
Mower is hard to
push.
High grass and low cutting
height. Rear of mower housing
and blade dragging in heavy
grass.
Raise the cutting height.

36
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Mower vibrates
excessively and
makes a lot of
noise.
The cutting blade is not
assembled securely.
Tighten the blade nuts.
The blade is not balanced.
Sharpen and balance the blade
following instructions in this manual (see
page 31). Or replace the blade.
The motor shaft is bent.
Stop the mower and remove the
batteries. Call the toll free helpline, at
866-384-8432.

37
LAWNMASTER
®
WARRANTY

38
EXPLODED VIEW

39
PARTS LIST
Replacement parts highlighted in grey are available for after sales purchase. Replacement of repair or
internal parts should only be done by a qualied service professional. Please contact your authorized
service dealer or Customer Service at 866-384-8432.
Key Number Part Number Description Quantity
1 Handle Assembly 1
2 Rear Wheel Assembly 2
2.1 Pin Assembly 2
3 Front Wheel Assembly 2
2.1 Pin Assembly 2
4 Deck Assembly 1
5 Front Axle Assembly 1
6 Blade Holder Assembly 1
7 211064116 Blade 1
8 Blade Nut 2
9 Rear Axle Assembly 1
10 Rear Skin Bafe Assembly 1
11 Safety Flap Assembly 1
12 Lower Handle Wing Knob 2
13 Left Lower Handle 1
14 Right Lower Handle 1
15 Upper Handle Wing Knob 2
16 Grass Collection Bag 1
17 Mulching Plug 1
18 Switch Box Assembly 1
19 211070120 Charger 1
20 211089107 Battery 4

40
NOTES
