Polaris 2010 Ranger XP - Manual (Page 82)

78
MAINTENANCE
Spark Plugs
Spark Plug Recommendations
Refer to the specifications section beginning on page 110 for the recom-
mended spark plug type for your vehicle. Always torque spark plugs to
specification.
NOTICE: Using non-recommended spark plugs can result in serious engine
damage. Always use Polaris-recommended spark plugs.
Spark Plug Gap/Torque
Spark Plug Inspection
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.
CAUTION! A hot exhaust system and engine can cause burns. Wear
protective gloves when removing a spark plug for inspection.
1. Remove the seat. Remove the spark plug cap.
2. 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.
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.
The tip should not be white. A white insulator tip indicates overheating,
caused by use of an improper spark plug or incorrect 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 oil or incorrect throttle body adjustments.
Model Electrode Gap New Plug
Torque
Used Plug
Torque
All .035" (.9 mm) 18 ft. lbs.
(24 Nm)
18 ft. lbs.
(24 Nm)