
WARNING: SAVE THIS MANUAL FOR FUTURE REFERENCE
INVERTER GENERATOR
USER'S MANUAL
R
GENMAX GENERATOR
GM4600iAEFIC
This manual contains important information regarding safety. Operation,
maintenance and storage of this product. Before use, read carefully and
understand all cautions, warnings, instructions and product labels. Failure to do
so could result in serious personal injury and/or property damage.
3800 Running Watts | 4600 Peak Watts

1
UNPACKING
Always have assistance when lifting
the generator. The generator is heavy;
lifting it could cause bodily harm.
Avoid cutting on or near staples to
prevent personal injury.
Tools required - box cutter or similar device.
1. Carefully cut the packing tape on top of the carton.
2. Remove socket wrench, and oil funnel and save
for later.
3. Carefully cut two sides of the carton to remove the
generator.
WHAT COMES IN THE BOX
Spark Plug Socket Wrench (1)
Dual-Purpose Screwdriver (1)
User Manual (1)
Warranty Information (1)
Funnel (1)
Cigarette Lighter to USB-C&A Adapter (1)
Remote Control Key (1)
450ml 10W30 Oil(1)
Battery Charger (1)
Automatic Start/Stop Cable (1)
DISCLAIMERS:
All information, illustrations and specifications in this manual are based on the latest information available at the
time of publishing. The illustrations used in this manual are intended as representative reference views only.
Moreover, because of our continuous product improvement policy, we may modify information, illustrations and/or
specifications to explain and/or exemplify a product, service or maintenance improvement. We reserve the right to
make any change at any time without notice. Some images may vary depending upon which model is shown.
ALL RIGHTS RESERVED:
No part of this publication may be reproduced or used in any form by any means - graphic, electronic or
mechanical, including photocopying, recording, taping or information storage and retrieval systems - without the
written permission of CHONGQING DINKING POWER MACHINERY CO., LTD
This manual contains important instructions for operating this inverter generator. For your
safety and the safety of others, be sure to read this manual thoroughly before operating the
generator. Failure to properly follow all instructions and precautions can cause you and others
to be seriously hurt or killed.

2
Spark Plug Socket Wrench
Used in spark plug maintenance,
inspection, and installation.
Phillips and slot blade
screwdriver used for generator
maintenance.
Dual-Purpose ScrewdriverFunnel
It's used to oil the generator.
Cigarette Lighter to USB-C&A
Adapter
Convert the cigarette lighter
socket to a USB-C&A socket.
DESCRIPTION OF FITTINGS
Remote Control Key
Used to remotely start and stop
the generator.
Note: Actual tools may differ in appearance or design from image shown.
450ml 10W30 Oil
Be sure to add oil before starting
the generator.
Battery Charger
Used to charge the battery
when in storage.
Automatic Start/Stop Cable
Used to connect automatic
start/stop equipment.

3
LIMITED WARRANTY
Model Number: _____________________________________
Name: ___________________________________________
Serial Number: ______________________________________
Street Address: ___________________________________
Date Purchased: ____________________________________
Purchased From: ____________________________________
City, State, ZIP: ____________________________________
Country: __________________________________________
Phone Number: ___________________________________
E-Mail: ___________________________________________
WARRANTY CARD
R
1. DURATION : One (1) year from the date of purchase by the original purchaser ( retail customer ) on products used
solely for consumer applications; if a product is used for business, commercial, or industrial applications, the warranty
per iod will be limited to ninety (90) days from the date of purchase.
2. WHO GIVES THIS WARRANTY (WARRANTOR):
CHONGQING DINKING POWER MACHINERY CO., LTD
3. WHO RECEIVES THIS WARRANTY(PURCHASER):The original purchaser (other than for purposes of resale) of
the Genmax's inverter.
4. WHAT PRODUCTS ARE COVERED BY THIS WARRANTY: Any portable generator supplied or manufactured by
Warrantor.
5. WHAT IS COVERED UNDER THIS WARRANTY: Substantial defects on material and workmanship which occur
within the duration of the warranty period.
6. WHAT IS NOT COVERED UNDER THIS WARRANTY:
A. Transportation changes for sending the product to Warrantor or its authorized service representative for warranty
service, or for shipping repaired or replacement products back to the customer; these charges must be borne by the
customer.
B. Damages caused by abuse, accident, shipping, misuse, overloading, modification, and the effects of corrosion,
erosion and normal wear and tear.
C. Warranty is voided if the customer fails to install, maintain and operate the product in accordance with the
instructions and recommendations set forth in the owner's manual(s), or if the product is used as rental equipment.
D. Pre-delivery service, i.e. assembly, oil or lubricants, and adjustment.
E. Items or service that are normally required to maintain the product, i.e. lubricants and filters.
F. Warrantor will not pay for repairs or adjustments to the product, or for any costs or labour, performed without
Warrantor's prior authorization.
EXCLUSIONS AND LIMITATIONS : Warrantor makes no other warranty of any kind, express or implied. Implied
warranties, including warranties of merchantability and of fitness for a particular purpose, are hereby disclaimed. This
warranty service described above is the exclusive remedy under this warranty; liability for incidental and consequential
damages is excluded to the extent permitted by law.
7. RESPONSIBILITIES OF PURCHASER UNDER THIS WARRANTY:
A. The purchaser must provide dated proof of purchase and must notify Warrantor within the warranty period.
B. Deliver or ship the serviced generator or component to the nearest Warrantor's authorized service representative.
Freight costs, if any, must be borne by the purchaser.
8. HAVE QUESTIONS?
Email: service@genmaxpower.com Phone: 866-960-2920

4
LIMITED WARRANTY
3
SAFETY WARNING
5
SAFETY INSTRUCTIONS
6
NAMES OF COMPONENTS
8
CONTROL FUNCTIONS
9
PREPARATIONS
11
1.Fuel............................................................................................................................................11
2.Oil...........................................................................................................................................11
3.Pre-operation Inspection.......................................................................................................12
STARTING UP THE GENERATOR
13
SHUTTING DOWN THE GENERATOR
16
USING THE GENERATOR
17
1.Service Environment of the Generator......................................................................................17
2.Generator Wiring.......................................................................................................................17
3.Generator Grounding................................................................................................................18
4.Parallel and Series Operation.................................................................................................19
5.Connecting Automatic Start/Stop Devices.................................................................................19
6.Battery Charging.......................................................................................................................20
SERVICE AND MAINTENANCE
21
1.Spark Plug Inspection.............................................................................................................22
2.Replacement of Oil...................................................................................................................23
3.Air Filter.....................................................................................................................................24
4.Fuel Filter Screen......................................................................................................................25
STORAGE AND TRANSPORT
26
1.Generator Storage....................................................................................................................26
2.Generator Transport..................................................................................................................26
TROUBLESHOOTING
27
TECHNICAL PARAMETERS
29
CHOOSING A GENERATOR
30
TABLE OF CONTENTS

5
SAFETY WARNING
Personal and property safeties of you and others are very vital. Please read the Safety
Warning in the User's Manual and the decals of the generator set carefully.The Safety
Warning can alert you to those potential hazards that could harm you and others. In front
of each Safety Warning, there is one of four words "DANGER" "WARNING",
"ATTENTION", and "CAREFUL". Details are as follows:
Failure to follow the instruction will result in being
in peril of your life or extremely serious injury.
Failure to follow the instruction will result in being
in peril of your life or very serious injury.
Failure to follow the instruction will result in minor
injury.
Failure to follow the instruction will result in the
damage to your generator set and other properties.
For portable generators where the neutral is floating, the operator's manual shall include the following wording or
equivalent:
The portable generator stator winding is isolated from the frame and from the AC receptacle ground pin; and
Electrical devices that require a connection between one conductor pin and the grounded receptacle pin may not
function properly.
NEUTRAL FLOATING
CO DETECT technology monitors the accumulation of carbon monoxide (CO), a poisonous gas produced by
engine exhaust when the generator is running. If CO Sensor detects unsafe elevated levels of CO gas, it
automatically shuts off the engine. CO Sensor is not a substitute for an indoor carbon monoxide alarm or for safe
operation. DO NOT allow engine exhaust fumes to enter a confined area through windows, doors, vents or other
openings. Generators must ALWAYS be used outdoors, far away from occupied buildings with engine exhaust
pointed away from people and buildings. Meets the requirements of ANSI/PGMA G300-2018.
CO TECHNICAL WARNING

6
SAFETY INSTRUCTIONS
Before operating the generator, it will help you avoid accidents to read and understand the Manual and
familiarize yourself with the safe operation procedures of the generator.
Please do not use indoors
Please do not use in humid
environment
Please do not connect it to
household appliances directly
Please do not smoke when refueling
Please do not spill when refueling
Please shut down the generator
before refueling

7
SAFETY INSTRUCTIONS
SAFETY LABELS AND DECALS

8
NAMES OF COMPONENTS
① Fuel Tank Cap: Open the fuel tank cap and fill with
proper amount of gasoline.
②
Recoil Handle: Pull to start the engine.
③ Bolt: Remove left (right) outer cover.
④ Left Outer Cover
⑤ Control Panel: Contains the reset breaker, outlets
and warning lights.
⑥ Engine Cooling Vents: Helps move airflow in unit
to regulate engine temperatures.
⑦ Right Outer Cover: Unscrew the bolts to remove
the outer cover, add or replace the oil and maintain the
air filter.
⑧ Muffler: Avoid contact until the engine is cooled
down. The spark arrestor prevents sparks from exiting
the muffler. It must be removed for servicing.
⑨ Spark Plug Access Cover: Remove the cover to
service the spark plug.
⑩ Telescopic Rod
⑪ Wheel
⑫ Magnetic Oil Dipstick: Absorb iron filings in the oil,
it is recommended to screw down the magnetic oil
dipstick and clean it every 50 hours.
3
4
2
1
10
5
6
8
9
3
11
7
12

9
CONTROL FUNCTIONS
CONTROL PANEL FEATURES GM4600iAEFIC
1011
12
13
14
15
① Light Switch: Press the first time to turn on the LED light and
press the second time to turn off the LED light.
② LED Light: 1. The LED light can be used normally when the
generator is running, and the LED light cannot be used when the
generator shuts down.
2. If the LED light is not turned off, press the one-key start button (or
remote control key) to stop the generator while the main switch is not
turned off, the LED light will automatically turn off after 30 seconds.
3. Press the one-key start button (or remote control key) to stop the
generator and also turned off the main switch, the LED light will go
out immediately.
③ START/STOP Switch: Press this button, the engine can start and
stop.
④ Low Idle Switch: When turned to the ON position, the engine will
sense the load needed and run at a slower RPM to save fuel.
⑤ Reset: If the inverter is overloaded, the reset breaker will trip. The
engine will continue to run, but there will be no output from the
inverter. Unplug the devices and reduce the load. Push in the reset
breaker to reset it.
⑥ DC Cigarette Lighter Outlet: 12V DC 8.3A.
⑦ Parallel Connectors: To increase AC power output, the connector
sockets are used to connect the two same type generators with
special parallel kit GM6000SPK sold by GENMAX. The connector
sockets is only used to connect two inverter generators. They can
not used for AC power output. The special paralleling kit GM6000SPK
shall be purchased separately, and they shall be approved by
certification body.
⑧ SERIES/AUTO GEN START:
1. When using parallel kits, two 120V generators can output 240V by
connecting this interface.
2. The communication interface for automatically starting and
stopping the generator. Used to connect equipment with automatic
start stop function.
⑨ Ground Terminal: The ground terminal is used to externally
ground the inverter.
⑩ 120V AC 30A TT-30R Outlet: The outlet is capable of carrying a
maximum of 30 amps.
⑪ 120V AC 20A 5-20R Outlet: The outlet is capable of
carrying a maximum of 20 amps.
⑫ Battery Charging Port: Charge the generator battery.
⑬ CO Alarm: Flashing red light: dangerous levels of carbon
monoxide gas have built up leave immediately until area has aired
out. Move generator to well-ventilated area before operation. Flashing
yellow light: carbon monoxide sensor malfunction. Sensor needs
service.
⑭ AC Protector: If the generator is overload, the AC protector will
trip to block current.
⑮ DC Protector: If the generator is overload, the DC protector will
trip to block current.
⑯ Main Switch: Manage battery power and shutdown. Tip: If you do
not use the generator for more than 7 days (168 hours), please press
the main switch to the "OFF" position, which can prevent the battery
from running out.
⑰ AUTO GEN START SW.: Connect the automatic start/stop device
to the communication interface ⑧ through the automatic start/stop
connection line, and press this switch to the ON position. The
generator will be controlled by an external device with automatic
start/stop function. After this function is enabled, the push start button
and remote start start/stop button and remote start are disabled.
16
17

10
CONTROL FUNCTIONS
DIGITAL DISPLAY CENTER
① : Represents single run time, goes from 0
at each startup.
② : Represents total operation time of the
generator. (Tip: The total operation time shall start to
accumulate after the generator runs for one hour. It
will not be displayed when the generator runs for less
than one hour. The total operation time shall be
accumulated by hours.) The two factors ① and ② are
displayed alternately every 8 seconds.
③ GASOLINE FUEL METER: Gasoline fuel level
display.
④ VOLTAGE: Voltage display.
⑤ FREQUENCY: Frequency display.
⑥ LOAD: Load power display.
⑦ POWER: Green light means normal operation.
⑧ OVERLOAD: Red light means the machine
overload.
⑨ LOW OIL: Red light means the amount of oil is too
low.

11
PREPARATIONS
Fuel
1
DANGER
• Fuel is flammable and toxic, please read the Safety Instruction carefully before refueling;
• Do not fuel too full, otherwise fuel will spill after fuel tank is warmed;
• After refueling, confirm that the fuel tank cap has been tightened.
ATTENTION
• After refueling, dry gasoline residue with a clean and soft cloth in time to avoid damaging plastic
enclosure;
• Unleaded gasoline must be used, as leaded gasoline can seriously damage internal parts of the
generator;
Remove fuel tank cap, and add gasoline to red horizontal indicating line oil level.
Fuel tank capacity: 1.6gal (6L)
Oil
2
No oil is filled into this generator when being delivered. Do not start up the generator without filling sufficient oil.
Please place the generator onto a horizontal plane surface;
1.
Loosen the knob on the right cover
counterclockwise and remove the right cover;
2.
Unscrew oil dipstick, Fill in 0.12gal(0.45L) oil
(SAE 10W/30 oil is recommended, of which
the grade is API standard Type SE or higher);
3.
Reinstall the right exterior cover and tighten the knob.
4.
Don't go over the scale

12
PREPARATIONS
Pre-use Inspection
3
WARNING
Even if the generator is not in service, its important component may suddenly fails. Before the
generator is started up, if any of following components is unable to work properly, please inspect
and repair carefully.
Tip: The condition of the generator shall be inspected before using every time.
Pre-operation inspection
ProjectPossible CausesProbable Solutions
FuelCheck fuel level in fuel tank of the generator.Add fuel if necessary.
Oil
Check oil level of the generator.Add oil if necessary.
Check whether there is oil leaking.
Abnormal
conditions
during
operation
Check operating condition of the generator.
If there is any need, please do not hesitate to
consult your dealer.
Battery
Check whether the battery is full.See the “Battery Charging” page.

13
STARTING UP THE GENERATOR
Remove the load from all output ends;
1.
Connect battery line before first use:
1. Loosen the knob on the right cover and remove the cover;
2. Connect the positive and negative electrodes of the battery.
Tip: Connect the same color wires together, do not connect the wrong
positive and negative wires.
2.
Move the LOW IDLE Switch to "OFF";
3.
Plug in after started.
6.
Select Boot Mode:
a. Recoil Start: Pull the starting handle to start the generator.
b. START/STOP Button Switch: Press the button to start the generator.
Tip: If the red light keeps flashing fast, the generator does not start successfully. Press the button to turn
off the red light, and press the button again to start the generator.
c. Remote Start: Press the "START" button on the remote control for 1-3 seconds to start the generator.
5.
a
b
c
Move the Main Switch to "ON";
4.

14
STARTING UP THE GENERATOR
COMMON PROBLEMS WITH STARTING THE GENERATOR:
Start the generator to run normally without output ?
Check whether the green light of the GFCI socket is on.
If the green light is not on, press the RESET button after the generator is started to
make the green light on.
Tip: When the generator is not started, the GFCI socket is in the protected state and
the "RESET" button cannot be pressed.
Electric start and remote start no response ?
1. Check whether the positive and negative electrodes of the battery are correctly connected.
2. Check whether the battery is charged.
3. Check whether the remote control is powered on.
Remote Control Pairing
1. Long press the start button for more than 5 seconds until the button red indicator is on;
2. Press any key on the remote control;
3. The red indicator of the start button will blink two or three times and then turns off, Remote start pairing is
successful.
Tip: The remote control delivered with the generator has been paired successfully.
12
3.13.2
TIP
Remote Control Key Dormancy
When generator stops running for 5 days (120hours), while the main switch is not turned off, the remote
control key cannot be used to start the generator again. At this time, you need to turn off the main switch
and turn it on again, or press the one-key start button (or hand start) to start the generator, and the remote
control key will be reactivated.
Parallel Operation
The parallel connection ports allow you to connect two generators to increase the total available electrical power.
Follow the instructions included with your parallel connection kit for proper installation and operation.
Overload Indicator
Note: The OVERLOAD light may turn on for a few seconds as a large device starts. This is normal for loads
approaching the capacity of this generator.
1. The total combined load through the outlets on the generator must not exceed the running power of the unit.
2. If the OVERLOAD light turns on and the generator stops producing power, it has been overloaded.

15
STARTING UP THE GENERATOR
Low Oil Indicator
1. If the engine oil level is too low, the LOW OIL light turns on and the engine will automatically shut off.
2. The engine cannot be restarted until the proper amount of oil has been added. Add the appropriate type of oil
until the oil level is at the proper level. SAE 10W-30 oil is recommended for general use.
Do not run the engine with too little oil. Engine will shut off if engine oil level is too low.
Low Idle
1. Turn on a Low Idle Switch to limit noise and fuel consumption with a light generator load.
2. Turn off the low idle mode to run the engine at full speed under the following conditions:
● Starting the generator.
● If the load exceeds 50%, it is recommended to turn off the low idle mode.
ATTENTION
3. Turn off and disconnect all electrical devices and stop the engine. Compare device requirements to generator
rating and reduce the total wattage of connected devices if necessary. Move anything that may be limiting
generator ventilation away.
4. Check if any circuit breakers have tripped and make sure that ALL circuit breakers are reset before starting the
generator again.
5. Restart the engine and reconnect devices while being careful to not overload the generator.

16
SHUTTING DOWN THE GENERATOR
Unplug the power cord;
1.
Select Stop Mode:
a. START/STOP Button Stop: Press the one-
click start button to turn off the generator.
b. Remote Stop: Press the "OFF" button on the
remote control to turn off the generator.
2.
a
b
Move the Main Switch to "OFF".
Tip: If you do not use the generator for more than 7 days (168 hours),
please press the main switch to the "OFF" position, which can prevent the
battery from running out.
3.

17
USING THE GENERATOR
Service Environment of the Generator
1
• Applicable temperature: -5°C~ 40°C;
• Applicable humidity: below 95%;
• Applicable altitude: regions below 1,500 m (It shall be used by reducing power in regions above 1,000 m).
Standard atmospheric condition
• Ambient temperature Tr: 298k (25°C)
• Relative air humidity Фr: 30%
• Absolute atmospheric pressure Pr: 100kPa
When actual environmental condition is inconsistent with the condition of output power of the generator
set:
• Every 5°C of increase in ambient temperature will reduce the power of generator by about 2%.
• Every 30% of increase in relative humidity of air will reduce the power of generator by about 1.5%.
• Every 300 m rising of ASL will reduce the power the generator by about 4.5%.
Generator Wiring
2
• When the generator is connected to household power source as a backup power supply, the connection shall be
carried out by a professional electrician or a person familiar with electricity.
• After connecting the load to the generator, check carefully whether electrical connection is safe and reliable.
Improper electrical connection may cause generator damage, burning or fire.
• Avoid connecting this generator to commercial power outlet.
• When extending the cable, be sure not to exceed its length.
① 60m cross-section area is 1.5mm²
② 100m cross-section area is 2.5mm²
• The appearance of extension cable shall be protected by a layer of tough and elastic rubber cover (IEC25) or
other substitutes.
OK
OK

18
USING THE GENERATOR
Connection of AC power
WARNING
All electrical equipment shall be disconnected before inserting the plug.
ATTENTION
• Make sure that all electrical equipment, including wires and plugs, are in good condition before
connecting to the generator;
• Make sure that all loads driven by the generator are within rated load range;
• Make sure that load current is within rated current range of rated socket.
Tip: Make sure that the generator set is grounded, and if electrical equipment requires
grounding, the generator set must be grounded.
① Start up the engine;
② Turn energy-saving switch to "ON";
③ Insert the plug into AC outlet;
④ Make sure that AC indicator is lit up;
⑤ Switch on electrical equipment.
Tip: Before increasing engine speed, energy-
saving switch must be switched to "OFF". If the
generator set supplies power to multi loads or
electrical equipment, start from large to small
according to the size of each electrical
equipment.
Generator Grounding
3
① Please use grounding wire with sufficient electrical energy capacity;
② Connect one end of grounding wire reliable to grounding bolt on control panel
of the generator set;
③ Insert grounding body (iron rod with a diameter of 5 ~ 10mm) 200mm below
into the earth and lead it out with conductor;
④ Connect the other end of the grounding wire reliable to the led wire of
grounding body.
In order to prevent any damage to the generator caused by electric shock or improper electrical application, it is
recommended that the generator is grounded with good conductor with insulating sheath.
Tip: How to change the grounding method please refer to the website: https://www.genmaxpower.com/page/faq

19
USING THE GENERATOR
Parallel and Series Operation
4
To increase AC power output, the connector sockets are used to connect the two same type generators with
special parallel kit GM6000SPK sold by GENMAX. The connector sockets is only used to connect two inverter
generators. They can not used for AC power output. The special paralleling kit GM6000SPK shall be purchased
separately, and they shall be approved by certification body. Follow the instructions included with your parallel
connection kit for proper installation and operation.
Connectors (Red) ①
Connectors (Red) ①
Ground Connectors (Ring) ③
Connectors (Black) ②
Ground Connectors (Ring) ③
Series Connector ④
Connectors (Black) ②
Parallel Connectors (120V OUTPUT): Connect the parallel cables of
connector (red) ① and connector (black) ② to the parallel ports of
corresponding colors on the generator control panel; Connect the
ground ring ③ to the generator ground terminal, and connect the
other generator in the same way. Press the voltage selector switch to
120V ONLY.
Series Connectors (120/240V OUTPUT): Connect the parallel
cables of connector (red) ① and connector (black) ② to the parallel
ports of corresponding colors on the generator control panel; Connect
the ground ring ③ to the generator ground terminal; Connect the
series connector ④ to the generator series connection port, and
tighten the series connector nut. Connect the other generator in the
same way. Press the voltage selector switch to 120/240V.
WARNING
TO PREVENT SERIOUS INJURY, DEATH, AND GENERATOR AND/OR EQUIPMENT DAMAGE FROM
ELECTRIC SHOCK AND FIRE:
1. Follow Parallel Kit instructions provided with Kit for connection and use of a Parallel Kit.
2. Only connect two identical Inverter Generators together using a Parallel Kit.
3. Connect Parallel Kit only to terminals marked "Parallel Outlets" on the front of the Generator.
4. Do not remove or connect a Parallel Kit while the Generator is running.
5. Do not use a Parallel Kit that is attached to only one Generator.
In parallel, the two generators should be connected to two fuel tanks. You cannot use the same tank
to fuel two generators.
Connecting Automatic Start/Stop Devices
5
GM1600WH is connected to the generator and automatically starts the generator to charge it when the power
station's electricity level is below 30%; When the power station reaches 100%, the generator will automatically
stop running.
Connect GM1600WH

20
USING THE GENERATOR
Connect the charger to the battery charging port on
the generator panel and connect the mains to
charge the battery.
Tip: The charging time is about 30-40 minutes.
Hand start charging: Start the generator by hand, and the battery will be charged automatically when the
generator runs.
Use an external power source for charging:
Do not start the generator while charging with an external power supply. Keep
batteries away from fire sources. Keep the battery in a cool and dry place, away from
direct sunlight. Keep batteries away from children.
ATTENTION
1. Charge properly
Keeping battery properly charged and discharged can prolong battery life. Maintaining a power level of 10%-
90% in battery is beneficial for battery protection.
2. Choose the appropriate charging temperature
Battery charging temperature range: 0-45℃.
3. Avoid overcharging
Overcharging of battery must be avoided during the charging process. Overcharging of battery in any form will
lead to serious damage to battery performance and even explosion.
Battery Charging
6
The battery storage time is generally about 6 months. If the generator is not used for a long time, the battery will
run out of power. At this time, the battery should be charged. Replace the battery if it is damaged or fails to
charge.
1. Turn off all electrical equipment, unplug them, and
turn off the generator.
2. Connect the GM1600WH with an Automatic
Start/Stop Cable.
3. Press the Main Switch to the "ON" position.
4. Press the AUTO GEN START Switch to the "ON"
position.
5. Connect the Charging Adapter to GM1600WH and
the other end to the generator AC socket.
6. Turn on GM1600WH.
WARNING
Charging Adapter
Automatic Start/Stop Cable
ATTENTION
• After this function is enabled, the push start button and remote start start/stop button and
remote start are disabled.
• Before connecting GM1600WH or other automatic start/stop equipment, please carefully read
the accompanying manual.

21
SERVICE AND MAINTENANCE
Good maintenance and service is the best guarantee for safe, economical and zero-failure operation. It also
contributes to environmental protection.
In order to keep the generator in good condition, you must inspect and maintain it regularly. The maintenance
schedule is as follows:
Maintenance cycle
Item
Each
First in 1 month
or 20 hours
Then every three
months or every
50 hours
100 hours per
year or use
Engine oil
Gearbox gear
Oil (if any)
Air cleaner
element
Settling cup (if any)
Spark plug
Spark eliminator
Idle speed
(if any)**
Valve clearance**
Fuel tank and
fuel filter***
Fuel line
Cylinder head,
piston
Displacement < 225cc, every 125 hours; displacement
capacity ≥ 225cc, every 250 hours.
Check-fill
Replace
Replace
Check oil
Inspection
Clean
Replace
Clean
Clean-adjust
Clean
Check-adjust
Check-adjust
Clean
Inspection
Remove
carbon
deposit**
Every two years (Please replace if necessary)
√
√√
√
√√
√
√
√
√
√*
√
√
√
√
* heseT items shall be replaced if necessary;
** heTse items shall be maintained by the dealer authorized by the Company, unless the
user has proper tools and maintenance ability.
ATTENTION
• If it often works under high temperature or high load, oil shall be changed every 25 hours;
• If it often works in dusty or harsh environment, air cleaner element shall be cleaned every 10 hours. If
necessary, the air cleaner element shall be replaced every 25 hours;
• It shall be maintained on spot-inspection cycle and time, whichever is earlier;
• If maintenance cycle time has elapsed, perform the maintenance as soon as possible as per the table
above.

22
SERVICE AND MAINTENANCE
WARNING
Please shut down the engine first before performing any maintenance. The engine shall be placed in a
horizontal position. In order to prevent the engine from starting up, separate spark plug cap shall be
separated from spark plug.
Do not use it indoors or use it in a tunnel, cave or other places ventilated poorly. Make sure that work area
is well ventilated. Exhaust gas from the engine contains toxic gases, carbon oxides, and the inhalation can
cause shock, loss of consciousness, and even death.
Spark Plug Inspection
1
Spark plug is an important part of the generator, which must be inspected regularly.
Remove decorative cover and spark plug cap of
the generator;
1.
Insert the screwdriver into the sleeve, to screw it
counterclockwise, and then remove the spark
plug;
2.
Check whether there is discoloration, and remove carbon deposits.Check
whether there is little pale to moderate brown on ceramic cores around
center electrode of the spark plug;
3.
Check the model of spark plug and clearance.
Spark plug gap: 0.7-0.8mm
Standard spark:
4.
Tip: The spark plug clearance is required to be measured by line thickness gauge, which shall be adjusted if
necessary.
BRANDBRANDMODEL
NGK
C7HSA
CR6HSA
TORCHA5RTC
0.7~0.8mm

23
SERVICE AND MAINTENANCE
Install the spark plugs in reverse order of removal.
Spark plug torque: 14±1N.m(123.9±8.8in-lb)
5.
Tip: If there is no torque wrench when installing the spark plug, a better estimation method is to screw it 1/4-1/2
turns by force after screwing it in place, but the spark plug shall be screwed to specified torque as soon as possible.
Replacement of Oil
2
WARNING
Do not drain the oil immediately after turning off the generator. Oil temperature is very high, when
operating, take care to avoid scalding.
Put the generator on a horizontal plane, start the generator, run it for a few minutes to make it warm, then
turn off the engine.
1.
2.
Unscrew oil dipstick.
3.
Loosen the knob on the right cover
counterclockwise and remove the right cover;
Place an oil pan under the engine, tilt the generator to quickly pour out oil;
After discharging the oil, put the generator back on level ground.
4.
Refill oil to a proper level, tighten oil dipstick,
cover external cover plate and tighten the knob.
5.
Recommended oil: SAE S10W/30
Oil grade: API standard Model SJ or higher
Volume: 0.12gal (0.45L)
Don't go over the scale

24
SERVICE AND MAINTENANCE
Air Filter
3
Dirty air cleaner may prevent air from flowing into the carburetor. In order to prevent failure of the carburetor,
please maintain air cleaner regularly. If being used in a dusty environment, it shall be maintained frequently.
1.
Remove screws , to remove cover plate of air
cleaner.
2.
Clean foam cleaner element with cleaning solvent and blow it dry, Put a few
drops of oil on the filter element.
3.
ATTENTION
Be sure not to twist the foam cleaner element forcibly to avoid damage.
Put foam cleaner element into air cleaner;
Tip: Make sure that the surface of foam cleaner element is in close contact
with air cleaner, and there shall be no gap leaking air. Be sure not to start the
engine before air cleaner is assembled, because it will generate excessive
toxic gas and wear the cylinder.
4.
Loosen the knob on the right cover
counterclockwise and remove the right cover.
1. Reassemble empty air cleaner cap back to
original position, and tighten screws.
2. Assemble right exterior cover and tighten knob.
5.

25
SERVICE AND MAINTENANCE
Fuel Filter Screen
4
WARNING
Be sure not to open fuel tank of the generator in a place where smoking or with flame.
1. Remove fuel tank cap and fuel tank filter screen.
2. Clean fuel tank filter screen with gasoline.
3. Wipe filter screen dry, and put it back into fuel tank.
4. Reassemble fuel tank cap.
Be sure to screw fuel tank cap tight.
ATTENTION

26
STORAGE AND TRANSPORT
Generator Storage
1
If it is stored long-term, in order to prevent aging, you shall take some storage measures.
Shut down generator.
1.
Open fuel tank cap, to take out fuel filter screen.
Pump all fuel in fuel tank into special fuel tank,
and then reassemble fuel tank cap back.
2.
Unscrew oil dipstick, and drain oil in the crankcase off. Fill new oil to upper oil limit, and then assemble
oil dipstick.
3.
Gently pull startup handle until you feel resistance, allowing both inlet valve
and exhaust valve to be closed.
4.
Place the generator set in a clean and dry area.
6.
Generator Transport
2
• When the generator set is transported, it shall be ensured that there is no fuel spilling;
• Do not fill excessive fuel into fuel tank;
• Do not run the generator, and avoid direct sunlight;
• Do not transport the generator set on rough road for long time.
Disconnect the battery cable.
5.
NOTE: If the generator has not been used for a long time, please ensure that it runs for at least 10 minutes per month.

27
TROUBLESHOOTING

28
TROUBLESHOOTING

29
TECHNICAL PARAMETERS
Item
Engine Model
Engine Type
Displacement (cc)
Gas Distribution Mode
Cooling Mode
Rated Speed (RPM)
Starting Method
Fuel Tank Volume (gal)
Fuel Type and Grade
Lubricating Oil Capacity (gal)
Lubricating Oil Model
Forced cooling wind
Vehicle-use unleaded gasoline
Noise dB (at 7m)(25% load)
Rated Power (kW)
Max. Power (kW)
Rated Voltage (V)
Rated Frequency (Hz)
Rated Power Factor
Phase Number
Run Time @ 25% (h)
Overall Dimension (in.)
Net Weight (lb.)
Stroke x Bore (mm)
Fuel Consumption Rate
(25% load)(L/h)
THD
Fuel Consumption Rate
(100% load)(L/h)
Valve Clearance
Input valve:0.03~0.08mm, Output valve:0.03~0.08mm
GM4600iAEFIC
165F/P-EFI
159
OHV
4850
Recoil Sstart / Electrical Start / Remote Start
SAE 0W-30
62
3.8
4.6
120
60
1
Single phase
65x48
9
4-stroke
0.68
1.8
≤3%
1.7 (6.5L)
0.12 (0.45L)
62 (28kg)
20.7×12.2×19.7 (540×310×500mm)

30
R
CHOOSING
A GENERATOR
1

31
In production management, based on orderly, efficient, scientific principles. trying to do as
better as possible in product design, development, production, inspection, etc. to make our
production can keep orderly. And will continue to make improvement to make sure that
keep the competitiveness.
Welcome friends at home and abroad to visit and guide, work together to create
brilliant.
Phone
866-960-2920
Http://www.genmaxpower.com/
Caojie Industrial Park,Hechuan District,Chongqing
E-mail
You
Tube
f
+
R
FacebookLinkedinYouTube
6800.J57.GEM.02.00 V5
service@genmaxpower.com
