2008 Polaris Sportsman 6x6 Owners Manual - Page 100

2008 Polaris Sportsman 6x6 Manual

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Spark Plugs MAINTENANCE Spark Plug Inspection 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 indicates the proper type and heat range for the engine and the service. NOTE: The tip should not be flaky and white. A white insulator tip indicates overheating, caused by use of an improper spark plug or incorrect fuel. 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, use of non-recommended oil or incorrect throttle body adjustments. Recoil Housing Always drain the recoil housing after operating the vehicle in wet conditions. Drain the housing before storing the vehicle. Make sure the housing is completely dry before reinstalling the drain plug. 1. Stop the engine. 2. Place the transmission in gear. 3. Lock the parking brake. 4. Remove the drain plug on the bottom of the recoil housing. 5. Allow the housing to drain completely. 6. Reinstall the drain plug. NOTE: Do not open the crankcase drain unless the engine has ingested water. On 4-cycle engines, some engine oil will be lost if the crankcase drain is opened. 97

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97
MAINTENANCE
Spark Plugs
Spark Plug Inspection
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.
NOTE:
The tip should not be flaky and white. A white insulator tip indicates
overheating, caused by use of an improper spark plug or incorrect
fuel.
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, use
of non-recommended oil or incorrect throttle body adjustments.
Recoil Housing
Always drain the recoil housing after operating the vehicle in wet condi-
tions. Drain the housing before storing the vehicle. Make sure the hous-
ing is completely dry before reinstalling the drain plug.
1.
Stop the engine.
2.
Place the transmission in gear.
3.
Lock the parking brake.
4.
Remove the drain plug on the bot-
tom of the recoil housing.
5.
Allow the housing to drain com-
pletely.
6.
Reinstall the drain plug.
NOTE:
Do not open the
crankcase
drain
unless the engine has ingested
water. On 4-cycle engines, some
engine oil will be lost if the crank-
case drain is opened.