R
GENMAX GENERATOR
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.
WARNING: SAVE THIS MANUAL FOR FUTURE REFERENCE
GM5500XiD
Portable Dual Fuel Generator
INVERTER GENERATOR
USER'S MANUAL
5500
4000
4950
3600
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)
Wrench (2)
Funnel (1)
NG Hose (1)
Engine Oil (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
DESCRIPTION OF FITTINGS
Spark Plug Socket Wrench
Used in spark plug maintenance,
inspection, and installation.
Phillips and slot blade
screwdriver used for generator
maintenance.
Dual-Purpose Screwdriver Funnel
It's used to oil the generator.
Wrench
Assorted wrenches used in
generator maintenance and
assembly.
LPG Hose
1485 mm
Hose length
1.312"-5ACME
Inside Diameter
LPG Hose
Pressure 1psi
First Stage Reducing Valve
Gas Cylinder Joint
5/8"-18UNF
Inside Diameter
Connect the LPG tank to transmit LPG fuel to the generator.
Note: Actual tools may differ in appearance or design from image shown.
Engine Oil
Be sure to add oil before starting
the generator.
3
LIMITED WARRANTY
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
Model Number: _____________________________________
Name: ___________________________________________
Serial Number: ______________________________________
Street Address: ___________________________________
Date Purchased: ____________________________________
Purchased From: ____________________________________
City, State, ZIP: ____________________________________
Country: __________________________________________
Phone Number: ___________________________________
E-Mail: ___________________________________________
WARRANTY CARD
R
4
TABLE OF CONTENTS
LIMITED WARRANTY
SAFETY
NAMES OF COMPONENTS
CONTROL FUNCTIONS
PREPARATIONS
Adding Engine Oil........................................................................................................................14
Adding Gasoline..........................................................................................................................14
Connecting an LPG Tank.................................................................................................15
OPERATION
USING THE GENERATOR
Service Environment of the Generator.......................................................................................21
Generator Wiring........................................................................................................................21
Generator Grounding.................................................................................................................22
SERVICE AND MAINTENANCE
Checking and Filling Fuel...........................................................................................................24
Cleaning the Generator.................................................................................................24
Spark Plug Inspection..................................................................................................................24
Engine Oil Change......................................................................................................................26
Cleaning/Replacing the Air Filter..................................................................................................27
STORAGE AND TRANSPORT
Generator Storage.....................................................................................................................28
Generator Transport..................................................................................................................28
Preparation for Use After Storage..............................................................................................28
TROUBLESHOOTING
TECHNICAL PARAMETERS
Generator Location.....................................................................................................................17
Starting the Generator................................................................................................................17
Shutting Down the Generator.............................................................................................20
CHOOSING A GENERATOR
3
5
10
13
14
17
21
23
28
29
31
32
ASSEMBLY
11
5
SAFETY
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.
Indicates a hazardous situation which, if not
avoided, could result in death or 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 G300-2023.
CO TECHNICAL WARNING
SAFETY PRECAUTIONS
Engine exhaust contains carbon monoxide, a
poisonous gas that could kill you in minutes. You
CANNOT smell it, see it, or taste it. Even if you do not
smell exhaust fumes, you could still be exposed to
carbon monoxide gas.
● Operate this product ONLY outside far away from
windows, doors and vents to reduce the risk of
carbon monoxide gas from accumulating and
potentially being drawn towards occupied spaces.
● Install battery-operated carbon monoxide alarms or
plug-in carbon monoxide alarms with battery back-up
according to the manufacturer's instructions. Smoke
alarms cannot detect carbon monoxide gas.
POISONOUS GAS HAZARD
6
● DO NOT run this product inside homes, garages,
basements, crawlspaces, sheds, or other partially-
enclosed spaces even if using fans or opening doors
and windows for ventilation. Carbon monoxide can
quickly build up in these spaces and can linger for
hours, even after this product has shut off.
● ALWAYS place this product downwind and point the
engine exhaust away from occupied spaces. If you
start to feel sick, dizzy, or weak while using this
product, shut it off and get to fresh air RIGHT AWAY.
See a doctor. You may have carbon monoxide
poisoning.
● If you start to feel sick, dizzy or weak while using the
portable generator, you may have carbon monoxide
poisoning. Get out side to fresh air immediately and
emergency medical assistance.. Very high levels of
CO can rapidly cause victims to lose consciousness
before they can rescue themselves. DO NOT
attempt to shut off the generator before moving to
fresh air. Entering an enclosed space where a
generator is or has been running may put you at
greater risk of CO poisoning.
CO Sentry Indicator Lights
Red
Carbon monoxide has accumulated around the
generator. After shut-off, the RED indicator light in
the CO Sentry area of the control panel will flash to
provide notification that the generator was shutoff due
to an accumulating CO hazard. The RED light will
flash for at least five minutes after a CO shut-off.
Move the generator to an open, outdoor area far away
from occupied spaces with exhaust pointed away.
Once relocated to a safe area, the generator can be
restarted. Introduce fresh air and ventilate the area
where the generator had shut down.
Yellow
A CO Sentry system fault occurred. When a system
fault occurs, the generator is automatically shut down
and the YELLOW indicator light in the CO auto-shutoff
area of the control panel will flash to provide
notification that a fault has occurred. The YELLOW
light will flash for at least five minutes after a fault.
The generator can be re-started, but may continue to
shutoff.
SAFETY
7
SAFETY
BEFORE USING THE GENERATOR
● In order to operate the generator correctly, be familiar
with the operation of the various components and
master the method of shutting down the generator
quickly.
● Never use the generator to power medical support
equipment.
● Please never modify the generator.
● Please do not use in rain or in areas with water. There
is a risk of electric shock when using generators and
connected appliances that have been soaked in rain
or water, or when operating with wet hands.
● Please never connect wires from the power company.
It can cause malfunctions in the machine and
connected electrical equipment, becoming the cause
of fire or personal accidents.
● The use of generators has laws and regulations,
please comply with labor safety and health
regulations, fire protection laws, electrical industry
laws, etc.
● Please do not connect parallel operation terminals
except for dedicated wires. There is a risk of electric
shock.
WHEN ADDING OR DRAINING GASOLINE
Turn the generator engine OFF and let it cool for at
least 2 minutes before removing the fuel cap. Loosen
the cap slowly to relieve pressure in the tank.
● Fill or drain fuel tank outdoors.
● DO NOT overfill the tank. Allow space for fuel
expansion.
● If fuel spills, wipe it up and let the area dry before
starting the engine.
8
SAFETY
● Keep fuel away from sparks, open flames, heat, and
other ignition sources.
● Check fuel lines, tank, cap, and fittings frequently for
cracks or leaks; replace if necessary.
● DO NOT light a cigarette or smoke anything.
WHEN STARTING EQUIPMENT
● Ensure spark plug, muffler, fuel cap, and air cleaner
are in place.
● DO NOT crank engine with spark plug removed.
WHEN OPERATING EQUIPMENT
● DO NOT operate this product inside any building,
carport, porch, mobile enclosure, marine
applications, or shed.
● DO NOT tip engine or equipment at an angle that
causes fuel to spill.
● DO NOT stop the engine by moving the choke
control the to "Start" position.
● DO NOT exceed the generator's wattage capacity.
● Start the generator and the let engine stabilize
before connecting electrical loads.
● Connect electrical loads in the OFF position, then
turn ON for operation.
● Turn electrical loads OFF and disconnect from the
generator before stopping the generator.
Improper treatment of the generator could damage it
and shorten its life.
● Use generator only for intended applications.
● If you have questions about intended use, ask a
dealer.
● Operate generator only on solid, level surfaces.
● DO NOT expose the generator to excessive
moisture, dust, dirt, or corrosive vapors.
● DO NOT insert any objects through cooling slots.
● If connected devices overheat, turn them off and
disconnect them from the generator.
PARALLEL KIT PRECAUTIONS
To prevent serious injury, death and damage to
generators and/or equipment due to electric shock
and fire:
● Follow Parallel Kit instructions provided with Kit for
connection and use of a Parallel Kit.
● Only connect two identical Inverter Generators
together using a Parallel Kit.
● Connect Parallel Kit only to terminals marked
"Parallel Outlets" on the front of the Generator.
● Do not remove or connect a Parallel Kit while the
Generator is running.
● Do not use a Parallel Kit that is attached to only one
Generator.
SAFETY PRECAUTIONS FOR GASOLINE
AND GASOLINE VAPOR
● Fire and explosion hazard. Gasoline is highly
explosive and flammable and can cause severe
burns or death.
● Fire and Burn Hazard. NEVER loosen or remove the
fuel cap while the generator is running. Turn the unit
off and allow it to cool for at least five minutes before
adding gasoline. Loosen the fuel cap slowly.
● In case of a gasoline fire, do not attempt to
extinguish the flame unless the engine/fuel control
switch is in the OFF position. Introducing an
extinguisher to a generator with an open fuel valve
could create an explosion hazard.
LIQUID PETROLEUM GAS (LPG/PROPANE)
Fire and explosion hazard. Never use a gas container,
LPG/propane hose, propane cylinder or any other fuel
item that appears to be damaged. If there is a strong
smell of propane while operating the generator, fully
close the propane cylinder valve immediately. Once the
propane is off, use soapy water to check for leaks on
the hose and connections on the tank valve and the
generator. Do not smoke or light a cigarette or check
for leaks using any open flame source such as a match
or lighter. If a leak is found, contact a qualified
technician to inspect and repair the LPG/ propane
system before using the generator.
9
SAFETY
SAFETY LABELS AND DECALS
5 6
5
6
10
NAMES OF COMPONENTS
① Recoil Handle: Pull to start the engine.
② LPG Inlet: Connect LPG (propane) as fuel.
③ Control Panel: Contains the reset breaker, outlets
and warning lights.
④ Muffler: Avoid contact until the engine is cooled
down. The spark arrestor prevents sparks from
exiting the muffler. It must be removed for servicing.
⑤ Oil Dipstick: Unscrew the oil dipstick to check oil
levels and add oil when needed.
⑥ Wheel
⑦ Fuel Switch: Rotate to ON to turn on gasoline,
rotate to OFF to turn off gasoline.
⑧ Handle
⑨ Inverter: Conversion of direct current to alternating
current using high frequency bridge circuit.
⑩ Fuel Tank Cap: Open the fuel tank cap and fill with
proper amount of gasoline.
⑪ Air Cleaner: To purify the waste gas.
⑫ Carburetor
⑬ Cylinder Head
⑭ Spark Plug
⑮ Fuel Tank: Store the added gasoline.
⑯ Support Leg
3
4
5
6
8
9
1
2
16
12
13
14
15
10
7
11
11
ASSEMBLY
ASSEMBLY PARTS LIST
Weight hazard. Always have assistance when lifting the generator. Never attempt to lift the unit by the handle.
Hold the unit by the frame and use proper lifting techniques to reduce the risk of back injury.
This product requires assembly. Do not attempt to operate this product if any items in the INCLUDED LIST are
already assembled when you remove the carton contents. These items are not assembled by the manufacturer
and should require customer assembly. Using an improperly assembled product can be hazardous and could
result in serious personal injury.
● Carefully cut down the sides of the packaging and remove the carton contents.
● Inspect the carton contents. Verify that all the items in the INCLUDED LIST are present and undamaged.
● Recycle or dispose of the packaging materials properly.
Pinch point hazard. Do not place your hand or fingers between the handle and the generator's frame.
Do not alter or modify this product unless instructed to so in this manual or by the manufacturer. Do not use
attachments or accessories that are not recommended for use with this product. Making unauthorized
modifications and using incompatible accessories can damage the unit and void your warranty.
Handle
QTY: 1
A
Wheel
QTY: 2 QTY: 2
Support Leg
C D
QTY: 2
Bolt M6×45
(Used of Support Leg)
E
QTY: 2
QTY: 2
Axle
Used for Wheels
Hitch Pin
Used for Wheels
F G
Bolt M8×45
(Used of Handle)
QTY: 3
H
QTY: 3
I
Nut M8
(Used of Handle)
QTY: 2
Nut M6
(Used of Support Leg)
J
Handle Installation Bracket
QTY: 1
B
QTY: 2
Washer (black)
(Used of Wheel)
K
QTY: 2
Washer (silvery)
(Used of Wheel)
L
QTY: 2
M
Bolt M6×12
(Used of Wheel)
12
Installing Support Leg
ASSEMBLY
● Parts needed - Support Leg ×2, M6×45 Bolt ×2, M6
Nut ×2.
● Raise the front end of the generator high enough to
gain access to the bottom of the frame. Securely
position props underneath to support.
● Line up holes on the support leg bracket to the holes
on the front of the generator frame.
● Attach the support leg using screws and nuts.
● Repeat these steps to install Support Leg.
● Parts needed - Wheels ×2, Axles ×2, Hitch Pins ×2,
Washer(black) ×2, Washer(silvery) ×2, M6×12 Bolt
×2.
● Slide the silver washer onto the axle and position it
against the wheel's inner side.
● Insert the bolt through the black washer and align it
with the wheel's outer side.
● Securely tighten the bolt through both the wheel
and axle to complete assembly.
● Pass the assembled wheel kit through the frame.
● Secure the wheel assembly by reinserting a hitch
pin through hole at the end of the wheel axle and
pressing until it locks into place.
● Repeat process on the other side of the generator
to install the second wheel.
Installing Wheels
Installing the Handle
● Parts needed - Handle ×1, M8×45 Bolt ×3, M8 Nut ×3,
Handle Installation Bracket ×1.
● Secure the Handle Installation Bracket to the rack with
bolts.
● Secure the handle to the mounting bracket with bolts.
J
D
E
M
K
C
L
F
G
I
H
B
I
H
A
13
CONTROL FUNCTIONS
① Engine Switch: Switch to "OFF" to stop the engine.
Switch to "ON" before starting engine.
② Low Idle: When turned to the ON position, the
engine will sense the load needed and run at a
slower RPM to save fuel.
③ Fuel Source: Switching between gasoline and
liquefied petroleum gas.
④ Low Oil Alarm: Indicates low oil level.
⑤ Overload Alarm: Indicates that the generator is
overloaded.
⑥ Power Indicator: Indicates the generator is ready
to be used.
⑦ Parallel Connectors: To increase AC power output,
the connector sockets are used to connect the two
same type generator with special paralleling cords.
The connector sockets is only used to the
communication between the inverters, they can not
used for AC power output. The special paralleling
cords shall be purchase separately, and they shall
be approved by certification body.
⑧ USB Duplex: 5V DC that come in 1 amps and2.1
amps.
⑨ Digital Display Meter: Display output voltage,
frequency and accumulative running time.
⑩ 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.
⑪ Reset: If the generator is overloaded, the reset
breaker will trip. The engine will continue to run, but
there will be no output from the generator. Unplug
the devices and reduce the load. Push in the reset
breaker to reset it.
⑫ 120V AC 20A 5-20R Outlet: The outlet is capable of
carrying a maximum of 20 amps.
⑬ AC Breakers: The circuit breakers protect individual
circuits from electrical overload.
⑭ 120V AC 30A L5-30R Outlet: The outlet is capable
of carrying a maximum of 30 amps.
⑮ Ground Terminal: The ground terminal is used to
externally ground the generator.
1 2 3
4
5 6
7
8
9
10
11
12
13
13
14
15
14
PREPARATIONS
No oil is filled into this generator when being delivered. Do not start up the generator without filing sufficient oil.
Your generator was functionally tested in the factory and may
contain minimum residual oil. Additional oil is required to operate
the unit. Do not overfill.
The recommended oil type for typical use is 10W-30 automotive
oil. However, using the listed conventional oils shown in the
"Recommended Engine Oil Type" chart may be used for typical
use including the first 5 hours of the break-in run time period of
the engine. If running generator in extreme temperatures, refer to
the "Recommended Engine Oil Type" chart.
Recommended Engine Oil Type
-20 0 20 40 60 80 100 120
-28.9 -17.8 -6.7 4.4 15.6 26.7 37.8 48.9
℃
℉
Ambient Temperature
10W-30
10W-405W-30
5W-30 Full Synthetic
ADDING ENGINE OIL
1. Please place the generator onto a horizontal plane surface.
2. Slowly unscrew and remove the oil dipstick.
3. Using a funnel, as needed, 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 OVERFILL.
Replace oil fill cap/dipstick and secure maintenance cover.
5. After refueling, tighten the oil dipstick, wipe off the surrounding oil.
4. Check engine oil level daily and add as needed.
Reinsert the dipstick, but do not tighten it, and remove it again to check the oil
level. The oil level should reach the full liquid level as shown in the figure.
TO PREVENT SERIOUS INJURY FROM FIRE:
Fill the gasoline tank in a well-ventilated area away from ignition sources. If the engine is hot
from use, shut the engine off and wait for it to cool before adding gasoline. Do not smoke.
ADDING GASOLINE
15
PREPARATIONS
1. Make sure the generator is on a solid, flat, level surface.
2. Unscrew the fuel cap and set it aside.
3. Slowly add gasoline to the fuel tank. Be careful not to overfill.
4. Replace the fuel cap and wipe up any spilled gasoline with a dry cloth then
remove the cloth from the area.
Do not overfill the gasoline the tank. Overfilling can result in a fire,
explosion, or death.
Gasoline can expand. Do not fill the gasoline tank to the top. Leave a
minimum of 1.5 inches open space. Gasoline fumes are highly
flammable. Do not fill the tank near an open flame. Always check for
gasoline spills.
● ALWAYS use CLEAN, FRESH, unleaded gasoline (87–93 octane) in this unit. NEVER use OLD, STALE, or
CONTAMINATED gasoline.
● Never use an oil/gasoline mixture.
● Avoid getting dirt or water in the gasoline tank.
● Gasoline can age in the tank and make it hard to start the generator in the future.
● Never store generator for extended periods of time with gasoline in the tank.
● Wipe up any spilled fuel and allow excess to evaporate before starting the engine. To prevent FIRE, do not start
the engine while the smell of fuel hangs in the air.
1.5"
DO NOT OVERFILL
THE GAS TANK
CONNECTING AN LPG TANK
● Confirm that the re-qualification date on the tank has not expired.
● All new propane tanks must be purged of air and moisture prior to filling. Used propane tanks that have not
been plugged or kept closed must also be purged. The purging process should be done by a propane tank
supplier (propane tanks from an exchange supplier should have been purged and filled properly).
● ALWAYS position the propane tank so the connection between the valve and the gas inlet will not cause sharp
bends or kinks in the hose.
Explosion hazard. DO NOT start generator if you smell propane. ALWAYS fully close the propane tank valve and
disconnect the LPG hose from the generator when not in use.
1. Turn the generator OFF and place on a flat surface in a well
ventilated area.
2. Verify that the LPG tank valve is in the fully closed position.
Close
16
PREPARATIONS
3. Remove the cover on the generator propane inlet.
4. Tighten the LPG hose to the LPG inlet of the generator.
IMPORTANT: DO NOT use thread seal tape or any other type of sealant to
seal the LPG hose connection.
5. Remove the safety plug or cap from the LPG tank valve and attach
the other end of the hose to the LPG connector on the tank. Hand-
tighten.
6. Turn the LPG tank valve to the fully open position.
Check all connections for leaks by wetting the fittings with a solution of
soap and water. Bubbles which appear or bubbles which grow indicate
that a leak exists. If a leak exists at a fitting, turn the LPG tank valve to
the fully closed position and tighten the fitting. Open the LPG tank valve
and recheck the fitting with the soap and water solution.
Open
17
1. Make sure the generator is on a solid, flat, level surface.
2. Disconnect all electrical loads from the generator. Never start or stop the generator with electrical
devices plugged in or turned on.
OPERATION
GENERATOR LOCATION
● NEVER operate the generator inside any building, garage, basement, crawlspace, shed, or enclosure, including
the generator compartment of a recreational vehicle.
● NEVER operate or start the generator in the back of an SUV, camper, trailer, truck bed (regular sides, flat or
other configuration), under staircases, stairwells, next to walls or buildings, or any other location that could limit
airflow or trap exhaust.
● DO NOT operate or store the generator in wet weather conditions such as rain or snow. Using a generator in
wet conditions could result in serious injury or death due to electrocution.
● Generators must have a minimum of 5 feet (1.5 m) of clearance from all combustible material.
● Generators must also have a minimum of 5 feet (1.5 m) of airflow clearance on all sides to allow for adequate
cooling, maintenance, and service.
● Always place the generator in a well-ventilated area. NEVER place the generator near air intake vents or where
exhaust fumes could be drawn into occupied or confined spaces.
● Always carefully consider wind and air currents when positioning the generator.
● Always allow generators to properly cool before transport or for storage purposes.
● Failure to follow proper safety precautions may result in personal injury, damage to the generator, and void your
warranty.
During operation, the muffler and exhaust fumes will become hot. If there is inadequate cooling space or if the
generator is blocked or enclosed, temperatures can rise quickly and may lead to a fire.
STARTING THE GENERATOR
3. Turn the Fuel Switch to desired fuel source.
To switch to gasoline
● Add gasoline.
● Turn off the flow of propane gas.
● Turn the fuel switch to “ON”.
● Switch the fuel source to the gasoline position.
To switch to propane
● Open the cylinder valve on the LPG cylinder to start the flow of propane.
● Turn off the flow of gasoline.
● Switch the fuel source to the LPG (propane) position.
CAUTION: Before switching fuel types, disconnect all electrical loads and shut down the generator. Then
turn off the fuel supply valve for the previous fuel type.
IMPORTANT: Load capacity is reduced when running on LPG. Make sure the generator can supply
enough (running) and surge (starting) watts for the items you are powering before switching to LPG.
NOTE: When switching to another fuel operation, the engine may run violently for a few seconds.
18
OPERATION
4. Press the LOW IDLE Switch to "OFF".
5. Press the Engine Switch to "ON".
7. Recoil Start
Firmly grasp and pull the recoil handle slowly until you feel resistance, let
it retract then pull swiftly.
6. Pull the choke out.
Tip: There is no need to pull out the choke switch when the engine is started in
warm state.
8. After the generator is running, push in the choke switch.
9. After 1-2 minutes of normal operation of the generator, connect the
required equipment.
Fire and explosion hazard. Always turn the propane
tank valve to the fully closed position if not running the
generator on propane.
When using the generator with propane, make sure
there is no possible ignition source close to the
generator.
19
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.
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.
OPERATION
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 mode 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.
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.
20
2. Press 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. Stop the flow of fuel.
● For propane, close the cylinder valve on the
LPG cylinder.
● For gasoline, turn off the fuel switch.
4. After the generator has completely cooled down, remove propane hose if applicable and store the
generator in a cool, dry, sheltered storage area.
5. Remove or consume all untreated gasoline if you plan to store the generator longer than 3
months.
OPERATION
Close
SHUTTING DOWN THE GENERATOR
1. Turn off and unplug all connected electrical loads. Never start or stop the generator with electrical
devices plugged in or turned on.
21
USING THE GENERATOR
• Applicable temperature: 23℉/-5℃ ~ 104℉/40℃;
• 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 (77℉/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%.
• 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
SERVICE ENVIRONMENT OF THE GENERATOR
GENERATOR WIRING
22
USING THE GENERATOR
Connection of AC power
All electrical equipment shall be disconnected before inserting the plug.
• 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.
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
GENERATOR GROUNDING
23
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;
** heT se items shall be maintained by the dealer authorized by the Company, unless the
user has proper tools and maintenance ability.
• 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.
24
SERVICE AND MAINTENANCE
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.
CLEANING THE GENERATOR
Do not store or operate your generator in dirty, dusty, or corrosive environments. Do not allow foreign materials
and debris to clog the vents on the unit.
NEVER clean the generator with a garden hose. Water can damage the generator's fuel system and electrical
components. If the unit needs to be cleaned, use a soft brush and damp cloth to clean the exterior and use low
pressure air (no greater than 25 psi) to clean the vents.
Never use gasoline as a cleaning agent.
CHECKING AND FILLING FUEL
TO PREVENT SERIOUS INJURY FROM FIRE:
Fill the fuel tank in a well-ventilated area away from ignition sources. If the engine is hot from use, shut the engine
off and wait for it to cool before adding fuel. Do not smoke.
1. Clean the Fuel Cap and the area around it.
2. Unscrew and remove the Fuel Cap.
3. Remove the strainer and remove any dirt and debris. Then replace the strainer.
Note: Do not use gasoline containing more than 10% ethanol (E10). Do not use E85 ethanol.
Note: Do not use gasoline that has been stored in a metal fuel container or a dirty fuel container. It can cause
particles to enter the carburetor, affecting engine performance and/or causing damage.
4. If needed, fill the Fuel Tank to about 1.5 inch under the fill neck with 87 octane unleaded gasoline that has been
treated with a fuel stabilizer additive. Follow fuel stabilizer manufacturer's recommendations for use.
5. Replace the Fuel Cap.
6. Wipe up any spilled fuel and allow excess to evaporate before starting the engine. To prevent FIRE, do not start
the engine while the smell of fuel hangs in the air.
SPARK PLUG INSPECTION
The spark plug is important for proper engine operation. A good spark plug should be intact, free of
deposits, and properly gapped.
Improper maintenance may cause reduced fuel economy, misfires, trouble starting, or damage to the
spark plug threads.
1. Turn the fuel switch to the "OFF" position and
disconnect the fuel pipe connected to the fuel
switch.
25
SERVICE AND MAINTENANCE
2. Loosen the four bolts on the fuel tank.
3. Disconnect the hose connected to the fuel tank.
4. Remove the fuel tank.
5. Pull out the spark plug cap.
Turn off the generator and wait for the generator to completely cool down.
Spark Plug Cap
Spark Plug
6. Unscrew the spark plug from the generator using the spark plug
wrench included with this product.
7. Inspect the Spark Plug.
If the electrode is oily, clean it using a clean, dry rag. If the electrode has
deposits on it, clean it with a brass wire brush. If the white insulator is
cracked or chipped, replace the spark plug.
8. Check the model of spark plug and clearance.
Spark plug gap: 0.7-0.8mm
Standard spark:
0.7~0.8mm
BRANDBRAND MODEL
NGK
C7HSA
CR6HSA
TORCH A5RTC
26
SERVICE AND MAINTENANCE
9. Reinstall the spark plug.
Spark plug torque: 14±1N.m(123.9±8.8in-lb)
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.
10. Replace Spark Plug Cap.
11. Reinstall the fuel tank in the reverse order of disassembly.
ENGINE OIL CHANGE
Do not drain the oil immediately after turning off the generator. Oil temperature is very high, when operating, take
care to avoid scalding.
NOTE: Change the oil while the engine is warm but not hot. Warm engine oil drains more quickly and thoroughly
than cool lubricant. Contact with hot lubricant will cause serious burns.
1. Drain engine oil.
Place an oil pan (or suitable container) under the oil filling port, unscrew the
oil dipstick, tilt the generator slightly, and allow the oil to drain.
Drain oil into an approved oil disposal container. Contact your local auto parts
store for information on oil disposal.
2. After the oil has drained completely, add clean engine oil again.
Follow the procedure of "Adding Engine Oil" to add new engine oil and check
the oil level.
3. Clean up any spilled oil.
27
SERVICE AND MAINTENANCE
CLEANING/REPLACING THE AIR FILTER
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. Turn off the generator and let the engine cool down.
2. Remove screws, to remove cover plate of air cleaner.
2. Remove the air filter element.
3. Clean the components with cleaning agent.
After cleaning, wrap the components in a cloth
and screw them dry.
NOTE: If the air filter element is damaged, replace
it with a new one.
5. Return the air filter element to its original position. Reinstall the air filter
cover.
NOTE: 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. Drip a few drops of oil to foam filter element
and squeeze off excess oil. The foam cleaner
element shall be wet, but there shall not be oil
dripping.
NOTE: Be sure not to twist the foam cleaner
element forcibly to avoid damage.
28
STORAGE AND TRANSPORT
GENERATOR STORAGE
If it is stored long-term, in order to prevent aging, you shall take some storage measures.
1. Turn off the generator and let it cool completely.
2. 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.
3. Start up the engine to burn off fuel in the carburetor, and then shut it down.
NOTE: Do not connect any electrical equipment. Running time of the engine depends on remaining fuel in the
fuel tank.
4. Unscrew fuel drain bolt on the carburetor, and drain fuel in the carburetor
into special fuel tank. Tighten fuel drain bolt.
5. Unscrew oil dipstick, and drain oil in the crankcase off. Fill new oil to
upper oil limit, and then assemble oil dipstick.
6. Remove the spark plug and pour 5-10ml of clean oil into the combustion
chamber. Turn the crankshaft a few times to distribute the oil, then
reassemble the spark plug.
8. Clean the generator.
NOTE: Please do not rinse the generator with water. There is a possibility of causing malfunctions and short
circuits in electrical components.
9. Place the generator set in a clean and dry area.
Placing the Generator
● After the generator cools down, place it upright and cover it with a layer of dust cloth. The generator should be
placed in a well ventilated and dry place.
● Do not pile up debris on the generator.
7. Gently pull startup handle until you feel resistance, allowing both inlet valve and exhaust valve to be
closed.
GENERATOR TRANSPORT
● 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.
PREPARATION FOR USE AFTER STORAGE
● Slowly pull the starter cord a few times to clean oil from the cylinder or to eject any pump protector from the
pump which may have been added prior to storage.
● Remove the spark plug from the cylinder. Wipe oil from the spark plug and return it to the cylinder and re-
tighten.
● Reconnect the spark plug wire.
● Refuel engine per earlier instructions in this manual.
29
TROUBLESHOOTING
The table is a general troubleshooting method. If the fault is inconsistent with the table or the fault cannot be
resolved, contact the distributor.
30
TROUBLESHOOTING
The table is a general troubleshooting method. If the fault is inconsistent with the table or the fault cannot be
resolved, contact the distributor.
31
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
Lubricating Oil Capacity (gal)
Lubricating Oil Model
Forced Cooling Wind
Gasoline / Propane
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)(Gasoline)
Overall Dimension (in.)
Net Weight (lb.)
GM5500XiD
OHV
4850
2.2(8.5L)
SAE 10W/30
0.12(0.45L)
68
4.0(GAS.)/3.6(LPG)
120
60
1
Single Phase
Stroke × Bore (mm)
11
4-stroke
63(28.8kg)
Recoil Start
5.5(GAS.)/4.95(LPG)
159
65×48
165F/P-1
23.1×18.5×17.8(586×469×453mm)
Fuel Consumption Rate
(25% load)(L/h)
THD
Fuel Consumption Rate
(100% load)(L/h)
0.75
1.9
≤3%
LPG Consumption Rate
(25% load)(kg/h)
LPG Consumption Rate
(100% load)(kg/h)
0.45
1.22
Valve Clearance
Input valve: 0.03~0.08 mm, Output valve: 0.03~0.08 mm
LPG Tank Capacity (Suggest)
20 Pound
32
R
CHOOSING
A GENERATOR
1
33
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
service@genmaxpower.com
Http://www.genmaxpower.com
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