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22 | 

Cleaning the Air Filter 

- Continued 

NOTICE

Never dispose of soap cleaning solution used to clean 

the air filter 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 filter elements by again applying a slow 

firm squeezing action.

9.  Once the air filters are dry, coat the air filters with 

clean engine oil.

10. Squeeze the filters to remove any excess oil.
11. Install the filters back into the unit. If there are two 

filters make sure the gray (fine) air filter goes in 

first followed by the black (coarse) air filter on the 

outside. 

12. Install the air filter cover and secure the air filter 

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 flat, level surface.
3.  Remove the spark plug boot by firmly 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

Summary of Contents for HYBRID DUAL FUEL R4400DF

Page 1: ...R4400DF Dual Fuel OPEN FRAME Generator GASOLINE 3600 Running Watts 4400 Peak Watts PROPANE 3300 Running Watts 4000 Peak Watts...

Page 2: ...n 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 O...

Page 3: ...register your generator you will need to locate the following information RAINIER PRODUCT REGISTRATION FORM PERSONAL INFORMATION GENERATOR INFORMATION First Name _____________________________________...

Page 4: ...ction 13 Grounding the Generator 13 High Altitude Operation 13 Power Cord 14 Engine Fluids and Fuel 15 Adding Gasoline to the Fuel Tank 15 Connecting LPG Tank 16 Switching Fuel Sources 17 Starting the...

Page 5: ...NGER 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 CA...

Page 6: ...ap with the engine running Never refuel the generator while the engine is running Always turn engine off and allow the generator to cool before refueling Only fill fuel tank with gasoline Keep sparks...

Page 7: ...sive and flammable Explosions and fire can cause severe burns or death Gasoline and gasoline vapor Gas Gasoline is highly flammable and explosive Gas expands and contracts with different temperatures...

Page 8: ...ALLING FEET TO FRAME 1 Place generator on a flat 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...

Page 9: ...tery cables ALWAYS disconnect the negative battery cable black boot first when disconnecting battery cables NEVER connect the negative battery cable black boot to the positive post on the battery NEVE...

Page 10: ...tick Must be removed to add and check oil FEATURES Oil Drain Plug Must be removed to drain engine oil Propane Hook Up Hook up your propane tank with the LPG hose provided to this inlet Never Flat Whee...

Page 11: ...ervicing the engine or the spark plug CARB Canister Required for models sold into and used in California Muffler and Spark Arrester Avoid contact until engine is cooled down Spark arrestor prevents sp...

Page 12: ...s 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 Fuel Selector Switch Select and turn on gas...

Page 13: ...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...

Page 14: ...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...

Page 15: ...intain the proper oil level can result in engine damage NOTICE During the first five hours of operating the generator make sure to not exceed 50 of the rated running watts until the unit is broken in...

Page 16: ...G hose when not in use 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...

Page 17: ...rt up FOR GASOLINE a Move the fuel shut off valve to the ON position ON OFF b Turn fuel selector knob to GASOLINE Fuel Shut Off ON Fuel Selector GASOLINE FOR LPG PROPANE a Make sure the LPG hose is sa...

Page 18: ...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 fill plug dipstick Always p...

Page 19: ...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 M...

Page 20: ...ize 4 With a damp rag clean around the oil fill plug dipstick 5 Remove oil fill plug dipstick Oil Fill Plug Dipstick 6 Check oil level When checking the engine oil remove the oil fill plug dipstick an...

Page 21: ...ities or reclamation facility AIR FILTER MAINTENANCE WARNING Never use gasoline or other flammable solvents to clean the air filter Use only household detergent soap to clean the air filter Cleaning t...

Page 22: ...plug boot by firmly 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...

Page 23: ...Switch is switched to STOP so the generator does not draw power from battery 2 Clean the generator as outlined in Cleaning the Generator 3 Drain all gasoline from the fuel tank as best as possible 4 D...

Page 24: ...ck for overload condition 2 The power cord s plug connector is not fully engaged in the generator s outlet 2 Verify plug connector is firmly engaged in the generator s outlet 3 Faulty or defective pow...

Page 25: ...buretor dispersing after operation 3 Normal no remedy is needed Poor performance or engine stalling on propane 1 Propane fuel line kinked or crushed 1 Inspect propane fuel line and remove kinks or oth...

Page 26: ...ou must at your expense deliver or ship your Rainier generator to an Rainier Outdoor Power Equipment Authorized Service Dealer for warranty repairs which must occur within the applicable warranty peri...

Page 27: ...rtime holiday or emergency labor Starting battery fuses light bulbs and engine fluids DISCLAIMER OF IMPLIED WARRANTIES This limited warranty is in lieu of all other expressed or implied warranties inc...

Page 28: ...28 Version 07 05 18KD Rev2 RainierPower com...

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