2004 Polaris Sportsman 700 EFI Owners Manual - Page 94

Spark Plugs MAINTENANCE AND LUBRICATION S Use RC7YC spark plugs. S Proper electrode gap is .035″ (.90 mm). S Spark plug torque is 18 ft. lbs. (24 Nm). CAUTION Using non-recommended spark plugs can result in serious engine damage. Always use Polaris-recommended spark plugs. 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 plugs for correct color. WARNING A hot exhaust system and engine can cause serious burns. Wear protective gloves when removing a spark plug for inspection. 1. Normal 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 flaky and white. A white insulator tip indicates overheating, caused by use of an improper spark plug or incorrect fuel. 2. Wet Fouled 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. Spark Plug Removal and Replacement 1. Remove the spark plug cap. 2. Using the special wrench provided in the tool pouch, rotate the spark plug counterclockwise to remove. 3. Reverse the procedure for spark plug installation. Torque to 18 ft. lbs. (24 Nm). 91