Rainier R4400 User manual

OPEN FRAME Generator
3600 Running Watts | 4400 Peak Watts
R4400

2 |
DISCLAIMERS:
All information, illustrations and specications 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
specications 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 Rainier Outdoor Power Equipment, LLC.
DANGER
This manual contains important instructions for operating this 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.
Model
Number
Running
Watts
Peak
Watts
Gasoline
Tank Size
(G)
Rated
Speed
(RPM)
Ignition
Type
Spark
plug
Engine
Disp
(cc)
Stroke
X Bore
Oil
Capacity
(qt.) Oil Type Fuel Type
R4400 3600 4400 4 Gallons 3600 TCI F7TC 212cc 55X70 .6 qt. 10W30 Gasoline
NOTICE
This generator is NOT equipped with altitude carburetor modication. Even with a carburetor modication, engine horsepower will
decrease about 3.5% for each 300 meter (1,000 foot) increase in altitude. The eect of altitude on horsepower will be greater if no
carburetor modication is made. A decrease in engine horsepower will decrease the power output of the generator. Contact our service
team to order altitude kits.
TECHNICAL SPECIFICATIONS
HAVE QUESTIONS?
Email us at [e-mail]
Operating, servicing and maintaining this equipment can expose you to chemicals including engine exhaust,
carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth
defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine
except as necessary, service your equipment in a well-ventilated area and wear gloves or wash your hands
frequently when servicing your equipment. For more information go to www.P65Warnings.ca.gov.
WARNING

| 3
FOR YOUR RECORDS:
Date of Purchase:
Generator Model Number:
Purchased from Store/Dealer:
Generator Serial Number:
IMPORTANT: KEEP YOUR PURCHASE RECEIPT TO ENSURE TROUBLE-FREE WARRANTY
COVERAGE.
PRODUCT REGISTRATION
To ensure trouble-free warranty coverage, it is important you register your Rainier generator.
You can register your generator by either:
1. Filling in the product registration form below and mailing to:
Product Registration
Rainier Outdoor Power Equipment, LLC
777 Manor Park Drive
Columbus, Ohio 43228
2. Registering your product Online at www.rainierpower.com/register
To register your generator you will need to locate the following information:
RAINIER PRODUCT REGISTRATION FORM
PERSONAL INFORMATION GENERATOR INFORMATION
First Name: _______________________________________ Model Number: _____________________________________
Last Name: _______________________________________ Serial Number:______________________________________
Street Address: ___________________________________ Date Purchased: ____________________________________
Street Address: ___________________________________ Purchased From:____________________________________
City, State, ZIP:____________________________________
Country: __________________________________________
Phone Number: ___________________________________
E-Mail: ___________________________________________

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TABLE OF CONTENTS
R4400 TECHNICAL SPECIFICATIONS ............2
PRODUCT REGISTRATION .....................3
For Your Records: ..........................3
Product Registration .......................3
Product Registration Form ...................3
SAFETY .....................................5
Safety Denitions ..........................5
Safety Symbol Denitions ...................5
General Safety Rules ........................6
ASSEMBLY .................................7
Installing Wheels and Feet ....................7
Installing the Battery ........................8
FEATURES .................................9
Generator Features .........................9
Control Panel Features .....................11
OPERATION .................................12
Before Starting the Generator .................12
Location Selection .......................12
Grounding the Generator ..................12
High Altitude Operation/Conversion Kits ......12
Power Cord ..............................13
Engine Fluids and Fuel .......................14
Adding Gasoline to the Fuel Tank ...........14
Starting the Generator ......................15
Stopping the Generator ......................16
Normal Operation .......................16
During an Emergency ....................16
MAINTENANCE ..............................17
Maintenance Schedule ......................17
Engine Oil Maintenance .....................18
Engine Oil Specication ...................18
Checking Engine Oil .....................18
Adding Engine Oil .......................18
Changing Engine Oil .....................19
Air Filter Maintenance .......................19
Cleaning the Air Filter ....................20
Spark Plug Maintenance .....................20
Checking and Adjusting Valve Lash ..............21
Cleaning the Generator ......................21
Storage ..................................21
TROUBLESHOOTING .........................22
WARRANTY .................................24

| 5
SAFETY DEFINITIONS
The words DANGER, WARNING, CAUTION and
NOTICE are used throughout this manual to highlight
important information. Be certain that the meanings of
these alerts are known to all who work on or near the
equipment.
This safety alert symbol appears
with most safety statements. It
means attention, become alert, your
safety is involved! Please read and
abide by the message that follows
the safety alerts symbol.
DANGER
Indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
NOTICE
Indicates a situation which can cause damage to the
generator, personal property and/or the environment,
or cause the equipment to operate improperly.
NOTE: Indicates a procedure, practice or condition
that should be followed in order for the
generator to function in the manner
intended.
SAFETY
SAFETY SYMBOL DEFINITIONS

6 |
DANGER
Never use the generator in a location that is wet or damp. Never expose the generator to rain, snow, water spray
or standing water while in use. Protect the generator from all hazardous weather conditions. Moisture or ice can
cause a short circuit or other malfunction in the electrical circuit.
Never operate the generator in an enclosed area. Engine exhaust contains carbon monoxide. Only
operate the generator outside and away from windows, doors and vents.
WARNING
Voltage produced by the generator could result in death or serious injury.
• Never operate the generator in rain or a ood plain unless proper precautions are taken to avoid being subject
to rain or a ood.
• Never use worn or damaged extension cords.
• Always have a licensed electrician connect the generator to the utility circuit.
• Never touch an operating generator if the generator is wet or if you have wet hands.
• Never operate the generator in highly conductive areas such as around metal decking or steel works.
• Always use grounded extension cords. Always use three-wire or double-insulated power tools.
• Never touch live terminals or bare wires while the generator is operating.
• Be sure the generator is properly grounded before operating.
WARNING
Gasoline, gasoline vapors & are extremely ammable and explosive under certain conditions.
• Always refuel the generator outdoors, in a well-ventilated area.
• Never remove the fuel cap with the engine running.
• Never refuel the generator while the engine is running. Always turn engine o and allow the generator to cool
before refueling.
• Only ll fuel tank with gasoline.
• Keep sparks, open ames or other form of ignition (such as matches, cigarettes, static electric sources) away
when refueling.
• Never overll the fuel tank. Leave room for fuel to expand. Overlling the fuel tank can result in a sudden
overow of gasoline and result in spilled gasoline coming in contact with HOT surfaces. Spilled fuel can ignite. If
fuel is spilled on the generator, wipe up any spills immediately. Dispose of rag properly. Allow area of spilled fuel
to dry before operating the generator.
• Wear eye protection while refueling.
• Never use gasoline as a cleaning agent.
• Store any containers containing gasoline in a well-ventilated area, away from any combustibles or source of
ignition.
• Check for fuel leaks after refueling. Never operate the engine if a fuel leak is discovered.
WARNING
Never operate the generator if powered items overheat, electrical
output drops, there is sparking, ames or smoke coming from the
generator, or if the receptacles are damaged.
Never use the generator to power medical support equipment.
Always remove any tools or other service equipment used during
maintenance from the generator before operating.
NOTICE
Never modify the generator.
Never operate the generator if it
vibrates at high levels, if engine speed
changes greatly or if the engine
misres often.
Always disconnect tools or appliances
from the generator before starting.
GENERAL SAFETY RULES
SAFETY

| 7
INSTALLING WHEELS AND FEET
BEFORE ASSEMBLING THE
GENERATOR, REVIEW THE SAFETY
SECTION STARTING ON PAGE 5.
CAUTION
Never lift the generator without
assistance. The generator is heavy
and lifting without assistance could
result in personal injury.
Never use the handles as a lifting point to
support the entire weight of the generator.
Only use the handles to move the generator
by lifting the handles and using the wheels to
move the generator.
Use caution when collapsing the handles.
Hands and ngers could get caught and
pinched.
NOTICE
Assembling the generator will require lifting the unit on one
side. Make sure all engine oil and fuel are drained from the
unit prior to assembling. Once assembled, the wheel kit is
not intended for on-road use. The wheel kit is designed for
use on this generator only.
INSTALLING FEET TO FRAME
1. Place generator on a at surface.
2. Place a piece of cardboard or other soft material to
tip the generator onto, to protect the frame paint
and prevent the generator from sliding. Tip the
generator onto the side.
3. Install the mounting foot to the frame using M8
ange bolts.
1 - Mounting Feet
2 - Flange Bolts M8
INSTALLING WHEELS TO FRAME
1. Insert axle pin through washer and wheel.
2. Install the wheel with axle pin through the axle
bracket on the frame. The eye of the bolt should be
facing toward the inside of the generator.
21
3
Assemble Wheel to Frame
3. Install the hairpin cotter through the axle pin to lock
it in place.
1 - Axle Bracket
2 - Hairpin Clip
3 - Axle Pin
4. Repeat previous steps on other wheel.
INSTALLING HANDLES TO FRAME
1. Install handle bracket
to frame and secure
with the two bolts and
nuts included.
2. Secure the handle to
the bracket with bolt
and nut provided.
3. Install handle stopper with bolt and nut provided.
ASSEMBLY
Wheel Assembly
Assemble Mounting Feet to Frame

8 |
4. Pull back the black boot and securely attach the
negative (-) battery cable (black boot) to the negative (-)
battery post. Replace the black boot so it protects the
cable lug and battery post.
1 - Positive (+) Battery Cable (Red)
2- Negative (-) Battery Cable (Black)
NOTICE
The electric start generator is equipped with a battery
charging feature. Once the engine is running, a small
charge is supplied to the battery via the battery cables
and will slowly recharge the battery.
INSTALLING THE BATTERY
WARNING
To avoid electric shock:
• ALWAYS connect the positive (+)
battery cable (red boot) rst when
connecting battery cables.
• ALWAYS disconnect the negative (-)
battery cable (black boot) rst when
disconnecting battery cables.
• NEVER connect the negative (-)
battery cable (black boot) to the
positive (+) post on the battery.
• NEVER connect the positive (+)
battery cable (red boot) to the
negative (-) post on the battery.
• NEVER touch both battery posts
simultaneously.
• NEVER place a metal tool across
both battery posts.
• ALWAYS use insulated or
nonconducting tools when installing
the battery.
1. Secure the positive (+) battery cable (red boot)
tightly to the positive (+) battery post. Make sure
boot is over battery post.
2. Locate negative (-) cable attached to alternator
cable, remove tie and route to the negative (-)
battery post. See below for location of negative (-)
cable.
(1) Negative Cable
Attaching the Negative (-) Battery Wire (black)
1
1
2
ASSEMBLY

| 9
Electric Start: Used to start the generator.
Fuel Cap: Close until clicking sound is heard.
Control Panel: Contains the circuit breakers
and outlets.
Battery: Included for electric start models.
Oil Fill Plug/Dipstick: Must be removed to add
and check oil.
FEATURES
Oil Drain Plug: Must be removed to drain engine oil.
Never Flat Wheels: For easy portability.
Single Piece Handle: Includes rubber grip. Allows
you to easily push or pull unit with one hand.
Recoil Pull Handle: Pull recoil handle to start the
generator.
Choke: Move to ON for cold start and OFF for warm
start.
1
5
6
7
9
10
8
2
3
4
1
2
4
6
8
10
7
9
5
3

10 |
Fuel Gauge: Indicates gas level.
Spark Plug Boot (Wire): Must be removed
when servicing the engine or the spark plug.
CARB Canister: Required for models sold into
and used in California.
Muer and Spark Arrester: Avoid contact
until engine is cooled down. Spark arrestor
prevents sparks from exiting the muer. It must
be removed for servicing.
11
12
13
14
11
12
13
14
FEATURES

| 11
120-Volt, 30 Amp Twistlock Outlet (L5-30R):
Outlet can supply 120V output.
120-Volt 30 Amp Outlet (TT-30R): Travel Trailer
outlet can supply a maximum of 30 amps and 120
volts.
Ground Terminal: The ground terminal is used to
ground the generator.
20-Amp Circuit Breaker: Circuit breaker limits
the current that can be delivered through the 120-
volt duplex outlets to 20amps.
Electric Start Switch: Hold in Start position to start
generator. Switch to STOP to stop the engine.
Data Center: The VFT Meter is an LED display
that will rotate through volts, frequency, and
lifetime run hours. You can press the MODE
button to cycle through the dierent displays.
The frequency and voltage can vary +/- 5% and
still be within tolerance.
120-Volt, 20-Amp Duplex Outlets (5-20R): Each
outlet is capable of carrying a maximum of 20
amps on a single receptacle or a combination of
both receptacles.
Main Circuit Breaker: The main circuit breaker
controls total output of all outlets to protect the
generator.
CONTROL PANEL FEATURES
1
8
2
3
4
5
6
7
7
3
5
8
6
1
FEATURES
4
Frequency in hertz
Lifetime run hours
Voltage
2

12 |
Weather – Never operate your generator outdoors during
rain, snow or any combination of weather conditions that
could lead to moisture collecting on, in or around the
generator.
Dry Surface – Always operate the generator on a dry
surface free of any moisture.
No Connected Loads – Make sure the generator has no
connected loads before starting it. To ensure there are no
connected loads, unplug any electrical extension cords that
are plugged into the control panel receptacles.
NOTICE
Starting the generator with loads already applied to it could result in
damage to any appliance being powered o the generator during the
brief start-up period.
Grounding the Generator – The National Electric Code (NEC),
as well as many local electrical codes, may require the generator
to be connected to earth ground. The most common application
that requires a ground rod is when you are using the generator
as a separately derived system to provide back up power to your
house. Typically this is when a transfer switch has a switched
neutral.
As the generator application has many variables that cannot
be determined by the manufacturer of the generator, a licensed
electrician will need to determine if a grounding rod is needed.
If a licensed electrician has determined the application requires
a ground rod, make sure it is connected to earth ground by
connecting the ground terminal on the control panel to earth
ground using copper wire (minimum 10 AWG). Consult a qualied
electrician for local grounding requirements.
WARNING
Be sure the generator is properly connected to
earth ground before operating. The generator must
be grounded to prevent electrical shock due to
faulty appliances.
High Altitude Operation
Engine power is reduced the higher you operate above sea
level. Output will be reduced approximately 3.5% for every
1000ft of increased altitude from sea level. This is a natural
occurrence and cannot be adjusted by engine. Increased
exhaust emissions can also result due to increased fuel
mixture. Other issues include hard starting, increased fuel
consumption and spark plug fouling.
BEFORE STARTING THE GENERATOR
BEFORE STARTING THE GENERATOR,
REVIEW SAFETY SECTION STARTING ON
PAGE 5.
Location Selection – Before starting the generator, avoid
exhaust and location hazards by verifying:
• You have selected a location to operate the generator
that is outdoors and well ventilated.
• You have selected a location with a level and solid
surface on which to place the generator.
• You have selected a location that is at least 15 feet
(4.5 m) away from any building, other equipment or
combustible material.
• If the generator is located close to a building, make
sure it is not located near any windows, doors and/or
vents.
WARNING
Always operate the generator on a level surface.
Placing the generator on non level surfaces can
cause the generator to tip over, causing fuel and
oil to spill. Spilled fuel can ignite if it comes in
contact with an ignition source such as a very hot
surface.
Prolonged exposure to engine exhaust can cause
serious injury or death. While charging a device
do not place on the exhaust side of the generator.
Extreme heat caused by exhaust can damage the
device, and cause a potential re hazard.
NOTICE
Only operate the generator on a solid, level surface. Operating the
generator on a surface with loose material such as sand or grass
clippings can cause debris to be ingested by the generator that
could:
• Block cooling vents
• Block air intake system
OPERATION

| 13
OPERATION
POWERCORD
Using Extension Cords
Rainier Outdoor Power Equipment assumes no responsibility for the content within this table. The use of this table is the
responsibility of the user only. This table is intended for reference only. The results produced by using this table are not
guaranteed to be correct or applicable in all situations as the type and construction of cords are highly variable. Always
check with local regulations and a licensed electrician prior to installing or connecting an electrical appliance.

14 |
ADDING / CHECKING ENGINE
FLUIDS AND FUEL
BEFORE ADDING/CHECKING ENGINE
FLUIDS AND FUEL, REVIEW SAFETY
SECTION STARTING ON PAGE 5.
DANGER
Filling the fuel tank with gasoline while the
generator is running can cause gasoline to leak
and come in contact with hot surfaces that can
ignite the gasoline.
Before starting the generator, always check:
• Level of Engine oil
• Level of gasoline in the fuel tank
It is not safe to add gasoline to the fuel tank or engine oil to the
engine while the engine is running or the engine and muer are
hot.
CHECKING AND / OR ADDING ENGINE OIL
WARNING
Internal pressure can build in the engine
crankcase while the engine is running.
Removing the oil ll plug/ dipstick while the
engine is hot can cause extremely hot oil to
spray out of the crankcase and can severely
burn skin. Allow engine oil to cool for several
minutes before removing the oil ll plug/
dipstick.
The unit as shipped does not contain oil in the engine.
You must add engine oil before starting the generator for
the rst time.
NOTICE
The engine does not contain engine oil as shipped.
Attempting to start the engine can damage engine components.
The owner of the generator is responsible to ensure the proper oil
level is maintained during the operation of the generator. Failure to
maintain the proper oil level can result in engine damage.
NOTICE
During the rst ve hours of operating the generator make sure to
not exceed 50% of the rated running watts until the unit is broken
in properly. Make sure to vary to load occasionally to allow stator
windings to heat and cool. Adjusting the load will also help seat
piston rings. Check oil more often during the rst couple times of
operating the generator.
NOTICE
Weather will aect engine oil performance. Change the type of
engine oil used based on weather conditions to suit the engine
needs.
ADDING GASOLINE TO THE FUEL TANK
BEFORE ADDING/CHECKING ENGINE
FLUIDS AND FUEL, REVIEW SAFETY
SECTION STARTING ON PAGE 5.
WARNING
Never refuel the generator while the engine is
running.
Always turn the engine o and allow
the generator to cool before refueling.
Required Gasoline – Only use gasoline that meets the
following requirements:
• Unleaded gasoline only
• Gasoline with maximum 10% ethanol added
• Gasoline with an 87 octane rating or higher
Filling the Fuel Tank – Follow the steps below to ll the
fuel tank:
1. Shut o the generator.
2. Allow the generator to cool down so all surface areas
of the muer and engine are cool to the touch.
3. Move the generator to a at surface.
4. Clean area around the fuel cap.
5. Remove the fuel cap by rotating counterclockwise.
6. Slowly add gasoline into the fuel tank. Be very careful
not to overll the tank. The gasoline level should NOT
be higher than the ller neck.
7. Install the fuel cap by rotating clockwise until
you hear a click, indicating the cap is completely
installed.
CAUTION
Avoid prolonged breathing of gasoline vapors.
Maximum Gasoline Fill Level
OPERATION

| 15
OPERATION
BEFORE STARTING THE GENERATOR
BEFORE STARTING THE GENERATOR,
REVIEW SAFETY SECTION STARTING ON
PAGE 5.
Before attempting to start the generator,
verify the following:
• The engine is lled with engine oil.
• The generator is situated in a proper location.
• The generator is on a dry surface.
• All loads are disconnected from the generator.
• The generator is properly grounded the Generator.
DANGER
Never use the generator in a location that is wet or
damp. Never expose the generator to rain, snow,
water spray or standing water while in use. Protect
the generator from all hazardous weather conditions.
Moisture or ice can cause a short circuit or other
malfunction in the electrical circuit.
Never operate the generator in an enclosed area.
Engine exhaust contains carbon monoxide. Only
operate the generator outside and away from
windows, doors and vents.
NOTICE
The engine is equipped with a low oil shutdown switch. If the oil
level becomes low, the engine may shut down and not start until
the oil is lled to the proper level. Poor oil quality may interfere with
the operation of the low oil shutdown switch.
The owner of the generator is responsible to ensure the proper oil
level is maintained during the operation of the generator. Failure to
maintain the proper oil level can result in engine damage.
STARTING THE GENERATOR
Be sure to check oil and gas levels before starting. If it is
the rst time starting make sure to add oil.
1. Make sure nothing is plugged into power outlets.
2. Verify the battery is properly installed and both
battery cables are attached.
3. Make sure the circuit breakers are properly set.
4. Move the fuel shut o valve to the ON position.
ON
OFF
5. If engine is cold, move the choke lever to the ON
position. If engine is warm move the choke to the
OFF position.
6. Choose starting method:
a. Electric Start: Push and hold the engine control
switch in the START position until the engine
starts. Once the engine starts, release the engine
control switch; the switch will automatically move
into the RUN position.
START
RUN
STOP
Note: If the engine fails to start after 5 seconds, release the
engine control switch. Let the generator sit idle for 15 seconds
and then repeat step 6a. If the cranking speed drops after each
unsuccessful attempt, then the battery may not be adequately
charged. Manually start the generator by following steps
below:
a. Manual Start: Firmly grasp and pull the recoil
handle slowly until you feel increased resistance.
At this point, apply a rapid pull while pulling up
and slightly away from the generator.
6. As the engine starts and stabilizes, gradually move
the choke lever back to the OFF position.
7. Wait 15 seconds for engine to stabilize before
plugging in electronic devices.

16 |
WARNING
Internal pressure can build in the engine
crankcase while the engine is running.
Removing the oil ll plug/ dipstick while
the engine is hot can cause extremely
hot oil to spray out of the crankcase and
can severely burn skin. Allow engine
oil to cool for several minutes before
removing the oil ll plug/dipstick.
Always perform maintenance in a well-
ventilated area. Gasoline fuel and fuel
vapors are extremely ammable and can
ignite under certain conditions.
WARNING
Avoid accidentally starting the
generator during maintenance by
removing the spark plug boot from
the spark plug. For electric start
generators, also disconnect the
battery cables from the battery
(disconnect the black negative (-)
cable rst) and place the cables away
from the battery posts to avoid arcing.
Allow hot components to cool to
the touch prior to performing any
maintenance procedure.
MAINTENANCE
BEFORE PERFORMING MAINTENANCE ON THE GENERATOR, REVIEW THE SAFETY
SECTION STARTING ON PAGE 5, AS WELL AS THE FOLLOWING SAFETY MESSAGES.
OPERATION
STOPPING THE GENERATOR
Normal Operation
During normal operation, use the following steps to
stop your generator:
1. Remove any connected loads from the control
panel receptacles.
2. Allow the generator to run at “no load” to reduce
and stabilize engine and alternator temperatures.
3. Position the engine control switch to STOP or if you
plan to store the generator after use, turn the fuel
shuto valve to the OFF position and allow the fuel
to be consumed from the carburetor.
During an Emergency
If there is an emergency and the generator must be
stopped quickly, position the electric start switch to the
STOP position immediately.
START
RUN
STOP

| 17
MAINTENANCE SCHEDULE
WARNING
Failure to perform periodic
maintenance or not following
maintenance procedures can cause
the generator to malfunction and
could result in death or serious injury.
NOTICE
Periodic maintenance intervals vary depending
on generator operating conditions. Operating the
generator under severe conditions, such as sustained
high-load, high-temperature, or unusually wet or
dusty environments, will require more frequent
periodic maintenance. The intervals listed in the
maintenance schedule should be treated only as a
general guideline.
TABLE 1: MAINTENANCE SCHEDULE - OWNER PERFORMED
Maintenance Item
Before Every
Use
After First 20
Hours or First
Month of Use
After 50 Hours
of Use or Every
6 Months
After 100 Hour
of Use or Every
6 Months
After 300 Hours of
Use or Every Year
Engine Oil Check Level Change Change - -
Cooling Features Check/Clean - - - -
Air Filter Check - Clean* - Replace
Spark Plug - - - Check/Clean Replace
Spark Arrestor - - - Check/Clean -
*Service more frequently if operating in dry and dusty conditions
TABLE 2: MAINTENANCE SCHEDULE - AUTHORIZED SERVICE DEALER PERFORMED
Maintenance Item
Before Every
Use
After First 20
Hours or First
Month of Use
After 50 Hours
of Use or Every
6 Months
After 100 Hour
of Use or Every
6 Months
After 300 Hours of
Use or Every Year
Valve Clearance - - - - Check/Adjust
Fuel Filter - - - Check/Clean -
Idle Speed - - - - Check/Adjust
CAUTION
Avoid skin contact with engine
oil or gasoline. Prolonged skin
contact with engine oil or gasoline
can be harmful. Frequent and
prolonged contact with engine
oil may cause skin cancer. Take
protective measures and wear
protective clothing and equipment.
Wash all exposed skin with soap
and water.
Following the maintenance schedule is important to
keep the generator in good operating condition. The
following is a summary of maintenance items by periodic
maintenance intervals.
MAINTENANCE

18 |
ENGINE OIL MAINTENANCE
Engine Oil Specication
1. Only use the engine oil specied in graphic below.
2. Only use 4-stroke/cycle engine oil. NEVER USE
2-STROKE/CYCLE OIL. Synthetic oil is an
acceptable substitute for conventional oil.
Recommended Oil
CHECKING ENGINE OIL
NOTICE
Always maintain proper engine oil level. Failure to maintain
proper engine oil level could result in severe damage to the
engine and/or shorten the life of the engine. Always use the
specied engine oil. Failure to use the specied engine oil
can cause accelerated wear and/or shorten the life of the
engine.
Engine oil level should be checked before every use.
1. Always operate or maintain the generator
on a at surface.
2. Stop engine if running.
3. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
4. With a damp rag, clean around the
oil ll plug/dipstick.
5. Remove oil ll plug/dipstick.
Oil Fill Plug/Dipstick
6. Check oil level: When checking the engine oil,
remove the oil ll plug/dipstick and wipe it clean.
Thread the oil ll plug/dipstick all the way back in and
then remove and check the oil level on the oil ll plug/
dipstick.
• Acceptable Oil Level – Oil is visible on the
crosshatches between the H and L lines on the oil
ll plug/dipstick.
• Low Oil – Oil is below the L line on the oil ll plug/
dipstick.
ADDING ENGINE OIL
1. Always operate or maintain the generator
on a at surface.
2. Stop engine if running.
3. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
4. Thoroughly clean around the oil ll plug/dipstick.
5. Remove oil ll plug/dipstick and wipe clean.
6. Select the proper engine oil.
7. Using a funnel, slowly add engine oil to the engine.
Stop frequently to check the level to avoid overlling.
8. Continue to add oil until the oil is at the correct level.
MAINTENANCE

| 19
CHANGING ENGINE OIL
1. Stop the engine.
2. Let engine sit and cool for several minutes (allow
crankcase pressure to equalize).
3. Place oil pan (or suitable container) under the oil
drain plug.
4. With a damp rag, thoroughly clean around the oil
drain plug.
5. Remove the oil drain plug. Once removed, place the
oil drain plug on a clean surface.
Oil Drain Plug
6. Allow oil to completely drain.
7. Replace oil drain plug.
8. Fill crankcase with oil following the steps outlined in
Adding Engine Oil.
NOTICE
Never dispose of used engine oil by dumping the
oil into a sewer, on the ground, or into ground
water or waterways. Always be environmentally
responsible. Follow the guidelines of the EPA or
other governmental agencies for proper disposal
of hazardous materials. Consult local authorities or
reclamation facility.
AIR FILTER MAINTENANCE
WARNING
Never use gasoline or other ammable
solvents to clean the air lter. Use only
household detergent soap to clean the
air lter.
Cleaning the Air Filter
The air lter must be cleaned after every 50 hours of
use or 3 months (frequency should be increased if
generator is operated in a dusty environment).
1. Turn o the generator and let it cool for several
minutes if running.
2. Move the generator to a at, level surface.
3. Unlock the air lter cover.
4. Remove the black coarse air lters.
5. Wash the foam air lter elements by submerging
the elements in a solution of household detergent
soap and warm water. Slowly squeeze the foam to
thoroughly clean.
NOTICE
NEVER twist or tear the foam air lter element during
cleaning or drying. Only apply slow but rm squeezing
action.
6. Rinse in clean water by submerging the air lter
elements in fresh water and applying a slow
squeezing action
oil pan
MAINTENANCE

20 |
Cleaning the Air Filter - Continued
NOTICE
Never dispose of soap cleaning solution used to clean
the air lter by dumping the solution into a sewer, on the
ground, or into ground water or waterways. Always be
environmentally responsible.
Follow the guidelines of the EPA or other governmental
agencies for proper disposal of hazardous materials.
Consult local authorities or reclamation facility.
7. Dispose of used soap cleaning solution properly.
8. Dry the air lter elements by again applying a slow
rm squeezing action.
9. Once the air lters are dry, coat the air lters with
clean engine oil.
10. Squeeze the lters to remove any excess oil.
11. Install the lters back into the unit. If there are two
lters make sure the gray (ne) air lter goes in
rst followed by the black (coarse) air lter on the
outside.
12. Install the air lter cover and secure the air lter
assembly.
SPARK PLUG MAINTENANCE
The spark plug must be checked and cleaned after
every 100 hours of use or 6 months and must be
replaced after 300 hours of use or every year.
1. Stop the generator and let it cool for several
minutes if running.
2. Move the generator to a at, level surface.
3. Remove the spark plug boot by rmly pulling the
plastic spark plug boot handle directly away from
the engine.
NOTICE
Never apply any side load or move the spark plug laterally
when removing the spark plug. Applying a side load or
moving the spark plug laterally may crack and damage the
spark plug boot.
Remove Spark Plug Boot
4. Clean area around the spark plug.
5. Using the 13/16” spark plug socket wrench
provided, remove the spark plug from the cylinder
head.
6. Place a clean rag over the opening created by the
removal of the spark plug to make sure no dirt can
get into the combustion chamber.
Inspect the spark plug for:
• Cracked or chipped insulator
• Excessive wear
• Spark plug gap (the acceptable
limit of 0.027–0.032 in.
[0.70 – 0.80 mm]).
NOTICE
Use only recommended spark plugs when servicing.
The manufacturer is not responsible for engine
damage when using spark plugs not recommended
by the manufacturer.
7. Install the spark plug by carefully following the
steps outlined below:
a. Carefully insert the spark plug back into the
cylinder head. Hand-thread the spark plug until
it bottoms out.
b. Using the 13/16” spark plug socket wrench
provided, turn the spark plug to ensure it is fully
seated.
c. Replace the spark plug boot, making sure the
boot fully engages the spark plug’s tip.
Recommended Spark Plug Replacement:
AC Delco: 4EXLS
Autolite: 52
Champion: N9YC
Bosch: W7DC
Torch: F7TC
SPARK PLUG GAP
MAINTENANCE