Snowmobile Polaris 340 Edge / 550 LX (2008 year). Instruction - part 20

 

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Snowmobile Polaris 340 Edge / 550 LX (2008 year). Instruction - part 20

 

 

80

MAINTENANCE

Intake Filters

The intake foam filter (+) limits snow ingestion into the intake system. 

When operating in loose powder snow, check the top of the foam filter 

periodically to remove any accumulation of snow.

CAUTION

Operating the snowmobile with the intake filters removed may cause carbu-

retor icing. The result will be poor fuel economy or carburetor malfunction. 

Always reinstall the intake filters before operating the snowmobile.

+

+

81

MAINTENANCE

Fuel Filter/Fuel Lines

The fuel filter is located inside the fuel tank. This component requires 

no maintenance.

Inspect the fuel lines regularly for signs of deterioration or damage. 

Always check fuel line condition after periods of storage. Normal dete-

rioration from weather and fuel compounds may occur. Replace worn or 

damaged fuel lines promptly.

Oil Filter

The oil filter on your model is assembled into the oil sending unit 

located in the bottom of the oil tank. This component requires no main-

tenance.

If service is performed to the oil injection system, trapped air must be 

bled from the system. See your dealer for instructions, or have your 

dealer perform this service.

CAUTION

Kinking the fuel lines or using a pliers or similar tools to remove fuel lines 

may cause damage to the lines. If a fuel line has been damaged or kinked, 

replace it promptly.

82

MAINTENANCE

Carburetor

Water/Sediment Trap Service

Most Polaris snowmobiles contain patented carburetor bowl water/sedi-

ment traps located at the bottom of each carburetor. The trap, consisting 

of a hose with a plug, should be drained at least every 2000 miles (3200 

km) and inspected for contamination.

Plug Cleaning Procedure
1. Turn the fuel tank supply valve off.
2. Position a container or shop towels to 

catch the contaminated gasoline.

3. Slide the clamp (1) away from the drain 

plug (2) and remove the drain plug 

from the sediment tube.

4. Wipe residue from the plug and reinstall 

it. Reposition and tighten the clamps. 

Continue until all traps have been emp-

tied.

WARNING

When draining the traps, fuel spillage will occur. Always work in a well venti-

lated area away from anything that may cause the fuel to ignite, such as open 

flames, sparks, heaters, trouble lights, cigarettes, etc. Review the gasoline 

warnings

 

found on page 56.

1

2

83

MAINTENANCE

Carburetor

The number stamped in the end of the main jet indicates the jet size. The 

jet installed at the time of manufacture is not necessarily correct for your 

elevation. It's your dealer's responsibility to make sure the correct main 

jet is installed.

Carburetor Adjustments

The frequency at which the carburetors are synchronized or balanced is 

important. Properly adjusted carburetors can greatly improve engine 

performance, fuel economy, engine life, and reliability.

If you notice any of the following conditions, the carburetor may need 

adjustment:
• Hard starting
• Poor idle
• Overheated pistons and cylinder walls
• Plug fouling
• Poor engine response to various throttle valve openings

CAUTION

Operating the snowmobile with incorrect jetting can result in serious engine 

damage. Have your Polaris dealer perform all carburetor adjustments to 

ensure all adjustments are done correctly.

 

 

 

 

 

 

 

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