Maintenance, Spark plugs – Polaris 600 RUSH User Manual

Page 87

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MAINTENANCE

Spark Plugs

Spark Plug Inspection

Spark plug condition is indicative of engine operation. The spark plug

firing end condition should be read after the engine has been warmed up

and the vehicle has been driven at higher speeds. Immediately check the

spark plug for correct color.

CAUTION! A hot exhaust system and engine can cause burns. Wear

protective gloves when removing a spark plug for inspection.

1. Remove the left side panel.
2. Remove the spark plug cap.
3. Using the special wrench provided in the tool pouch, rotate the

spark plug counter-clockwise to remove.

4. Reverse the procedure for spark plug installation. Torque to specifi-

cation.

5. Reinstall the spark plug cap.

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.

TIP: 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 or

use of non-recommended injection oil.

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