2007 Polaris Ranger 500 2x4 Owners Manual - Page 71

2007 Polaris Ranger 500 2x4 Manual

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MAINTENANCE Spark Plugs Spark Plug Condition Normal 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 white. A white insulator tip indicates overheating, caused by use of an improper spark plug or incorrect carburetion adjustments. Wet Fouled 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, improper use of the choke, or incorrect throttle body/carburetor adjustments. Spark Plug Removal and Replacement 1. Remove the seat to access the engine compartment. 2. Remove the spark plug cap. Using the spark plug wrench provided in the tool kit, remove the plug by rotating it counterclockwise. 3. Reverse the procedure for spark plug installation. Torque to specification. See page 67. 68

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68
MAINTENANCE
Spark Plugs
Spark Plug Condition
Normal 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 white. A white insulator tip indicates overheating,
caused by use of an improper spark plug or incorrect carburetion
adjustments.
Wet Fouled 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, improper use of the choke, or incorrect throt-
tle body/carburetor adjustments.
Spark Plug Removal and Replacement
1.
Remove the seat to access the engine compartment.
2.
Remove the spark plug cap. Using the spark plug wrench provided
in the tool kit, remove the plug by rotating it counterclockwise.
3.
Reverse the procedure for spark plug installation. Torque to specifi-
cation. See page 67.