Polaris 2002 ATV Sportsman 6X6 - Manual (Page 106)

103
MAINTENANCE AND LUBRICATION
Spark Plugs
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Use NGK BKR5ES spark plugs.
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Proper electrode gap is .025″ (.06 cm).
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Spark plug torque is 17 ft. lbs.(2.3 kg/m) for a used spark plug, 11
ft. lbs (1.52 kg/m) for a new spark plug.
Spark plug condition is indicative of engine operation. The spark plug
firing end condition should be read after the engine is warmed up and
the vehicle is driven at higher speeds. Immediately check the spark
plug for correct color.
1. Normal
The insulator tip is gray, tan or light brown. There will be few
combustion deposits. The electrodes are not burned or eroded. This
indicates the proper type and heat range for the engine and the service.
NOTE: The tip should not be white. A white insulator tip indicates
overheating, caused by use of an improper spark plug or incorrect
carburetion adjustments.
2. Wet Fouled
The 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 are excessive oil, use of
non-recommended injection oil, improper use of the choke, or incorrect
carburetion adjustments.
Spark Plug Removal and Replacement
The spark plug is removed by using the special wrench provided in the
tool pouch under the seat. Reach under the right hand fender and then
back for access. Remove the spark plug cap and then the spark plug by
rotating counterclockwise.
Reverse the procedure for spark plug installation. Torque to 17 ft. lbs.
(2.3 kg/m). Never deviate from the recommended spark plug as engine
damage can occur.
WARNING
Never attempt to remove a spark plug while the engine is warm.
The exhaust system or engine could burn you causing severe
injury.