Snowmobile Polaris 550 IQ / 550 Shift (2012 year). Instruction - part 18

 

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Snowmobile Polaris 550 IQ / 550 Shift (2012 year). Instruction - part 18

 

 

72

MAINTENANCE

Intake Filters

The intake foam filters limit snow 
ingestion into the intake system. 
When operating in loose powder 
snow, check the foam filters period-
ically to remove any accumulation 
of snow.

NOTICE: Operating the snowmobile 

with the intake filters removed 
may cause carburetor icing. 
The result will be poor fuel 
economy or carburetor mal-
function. Always reinstall the 
intake filters before operating 
the snowmobile.

Oil Lines

Inspect oil line condition every 1000 miles (1600 km).

Oil Filter

The oil filter is located at the side of 
the oil tank. Have your dealer change 
the oil filter and bleed the system 
annually or every 1000 miles (1600 
km). 

Tip: The direction of the arrows indicates 

the direction of flow through the fil-
ter.

Fuel Pump

All fuel pump service must be performed by an authorized POLARIS 
dealer. Do not attempt to service the fuel pump.

73

MAINTENANCE

Fuel Filter/Fuel Lines

See your POLARIS dealer for replacement of the under-tank fuel filter 
every 1000 miles (or annually).

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.

NOTICE: 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.

n

Cooling System

Inspect the fan intake and outlet edge seal at the input and output for 
cracks, loosening of duct and blockage or obstructions. Make any neces-
sary repairs promptly.

Exhaust System

Check the exhaust system for wear or damage at approximately 2000 
miles (3200 km). Always allow the engine and exhaust system to cool 
completely before inspecting.

CAUTION! Hot exhaust system parts can cause burns. Allow adequate time for 
the exhaust system to cool. Never perform this procedure with the engine 
running.

1. Open the hood and inspect the muffler and pipes for cracks or dam-

age.

2. Check for weak or missing retaining springs or damper/support 

grommets.

3. Check for loose clamps on the pipe covers.

74

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.

NOTICE: 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.

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

75

MAINTENANCE

Carburetor Water/Sediment Trap

Most POLARIS snowmobiles contain patented carburetor bowl water/
sediment traps located at the bottom of each carburetor. The trap, con-
sisting of a hose with a plug, should be drained about every 1000 miles 
(1600 km) and inspected for contamination.

WARNING! When draining the traps, fuel spillage will occur. Always work in a 
well ventilated area away from anything that may cause the fuel to ignite, such 
as open flames, sparks, heaters, trouble lights, cigarettes, etc. Review the fuel 
warnings on page 51.

Cleaning Procedure

1. Turn the fuel valve off.

2. Place a container or shop 

towels below the plug to 
catch drained fuel.

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 clamp. 

5. Repeat the draining procedure for any remaining traps. 

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