2012 Polaris 550 IQ Shift ES Owners Manual - Page 75

2012 Polaris 550 IQ Shift ES 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. The tip should not be white. A white insulator tip indicates overheating, caused by use of an improper spark plug or incorrect carburetor/throttle body 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 injection oil, improper use of the choke, or incorrect carburetion adjustments. Spark Plug Removal and Replacement 1. 2. 3. 4. 5. Remove the spark plug cap. Rotate the spark plug counterclockwise to remove it. Reverse the procedure for spark plug installation. Torque to 18-22 ft. lbs. (24-30 Nm). Reinstall the spark plug cap. 71

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71
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.
The tip should not be white.
A white insulator tip indicates overheating,
caused by use of an improper spark plug or incorrect carburetor/throttle
body 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 injection oil, improper use of the choke, or incor-
rect carburetion adjustments.
Spark Plug Removal and Replacement
1.
Remove the spark plug cap.
2.
Rotate the spark plug counterclockwise to remove it.
3.
Reverse the procedure for spark plug installation.
4.
Torque to 18-22 ft. lbs. (24-30 Nm).
5.
Reinstall the spark plug cap.