MAINTENANCE Engine Clean the cylinder & flywheel fins with compressed air or a brush periodically. Dangerous overheating of engine may occur due to impurities on the cylinder. Spark Arresting Muffler The muffler is equipped with a spark arrester screen. A faulty spark arrester screen can create a fire hazard. Through normal use the screen can become dirty and should be inspected weekly and cleaned as required. To clean: Allow the muffler to cool. Remove the two (2) deflector screws ( A ). Remove the deflector ( B ) and spark arrester ( C ). Clean and inspect the spark arrester screen. If the spark arrester screen is damaged, faulty or deteriorated, replace the screen.
Reassemble components in reversed order of removal and torque deflector screws to 43 in/lbs (4.9 Nm). WARNING Never run the saw without all the parts, including the drivecase cover and starting housing, securely in place. Because parts can fracture and pose a danger of thrown objects, leave repairs to the flywheel and clutch to trained John Deere Servicing Dealers. A Spark Plug This engine uses a Champion RCJ-7Y with .02 (0.5 mm) elec- trode gap. Use an exact replacement and replace every six months or more frequently, if necessary. 0.02" (0.5mm) C A B RCJ-7Y 23 English