Snowmobile Polaris Turbo IQ LXT (2014 year). Manual - part 26

107

MAINTENANCE

Spark Plugs

A new engine can cause temporary spark plug fouling due to the preser-
vative added during the assembly process. Avoid prolonged idle speeds, 
which cause plug fouling and carbonization.

NOTICE: Using non-recommended spark plugs can result in serious engine 

damage. A spark plug with a heat range too high will always cause 
engine damage if the engine is operated in conditions more severe 
than intended for that plug. Always use the spark plugs recommended 
for your snowmobile.

• Use recommended spark plugs with the proper gap. Refer to the spec-

ifications section beginning on page 142.

• Use only resistor-type spark plugs.

• Torque spark plugs to 18-20 ft. lbs. (24-27 Nm).

Check the spark plug firing end condition after the engine has been 
warmed up and the vehicle has been driven at higher speeds. If a plug is 
fouled, replace the plug with a new plug.

CAUTION! A hot exhaust system and engine can cause burns. Wear 
protective gloves when removing a spark plug for inspection.

108

MAINTENANCE

Spark Plugs

Normal Spark Plug

The normal insulator tip is gray, tan or light brown. There will be few 
combustion deposits. The electrodes are not burned or eroded. This indi-
cates the proper type and heat range for the engine and the service.

Tip: The tip should not be white. A white insulator tip indicates overheating, 

caused by use of an improper spark plug or incorrect throttle body adjust-
ments.

Wet Fouled Spark Plug

The wet fouled insulator tip is black. A damp oil film covers the firing 
end. There may be a carbon layer over the entire nose. Generally, the 
electrodes are not worn. General causes of fouling are excessive oil or 
rich fuel mixture.

109

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.

Fuel Injectors

All fuel injector service must be performed by an authorized POLARIS 
dealer. Do not attempt to clean or service the fuel injectors.

Fuel Pump

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

Fuel Filter

See your POLARIS dealer for replacement of the fuel filter at the inter-
vals outlined in the Periodic Maintenance Table beginning on page 91.

Contaminated or poor quality fuel will shorten the life of the fuel filter 
and result in poor engine performance. Always store fuel in clean fuel 
containers. If low fuel pressure or reduced engine performance occurs 
between the recommended fuel filter service intervals, the filter may 
need replacement. See your dealer.

Fuel Lines

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.

X

110

MAINTENANCE

Alternator Belt Inspection

Inspect the alternator belt condition and tension before each ride.

1. Stop the engine.

2. Open the hood.

3. Inspect the belt for wear, 

cracks or other damage. If the 
belt is worn or damaged, 
install a new belt.

4. Grasp the alternator belt and 

attempt to twist it. 

5. If the belt rotates 1/4 turn (90°) or more (as shown), tighten the belt 

or install a new belt.

Air Filter (Turbo)

Inspect the air filter for oil and dirt accumulation at the intervals out-
lined in the Periodic Maintenance Table beginning on page 91. 

1. Open the airbox.

2. Remove the air filter. 

3. Shake or pat the filter to clean it, or install a new filter. Do not 

attempt to clean the filter with liquids.

Foam Oil Breather Filter

Clean or replace the breather element at each engine oil change. Inspect 
the foam oil breather element any time the snowmobile has been tipped 
onto its left side. Clean the element if oil is present. See page 102.