2010 Polaris Ranger XP Owners Manual - Page 82

MAINTENANCE Spark Plugs Spark Plug Recommendations Refer to the specifications section beginning on page 110 for the recommended 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 Model All Electrode Gap .035" (.9 mm) New Plug Torque 18 ft. lbs. (24 Nm) Used Plug Torque 18 ft. lbs. (24 Nm) 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 specification. 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 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. 78