Cub Cadet RT 65 Rear Tine Tiller Operation Manual - Page 18

2. To clean foam element, separate it from the paper element 4. Check that the spark plug washer is in good condition and wash in liquid detergent and water. Allow to dry and thread the spark plug in by hand to prevent cross- thoroughly before using. Do not oil the foam element. threading. Spark Plug Service 5. After the spark plug is seated, tighten with a spark plug wrench to compress the washer. WARNING! DO NOT check for spark with spark plug removed. DO NOT crank engine with spark plug removed. WARNING! If the engine has been running, the muffler will be very hot. Be careful not to touch the muffler. NOTE: When installing a new spark plug, tighten 1⁄2 turn after the spark plug seats to compress the washer. When reinstalling a used spark plug, tighten 1⁄8-1⁄4 turn after the spark plug seats to compress the washer. Caution! The spark plug must be securely tightened. An improperly tightened spark plug can become very hot and may damage the engine. To ensure proper engine operation, the spark plug must be properly gapped and free of deposits. 1. Remove the spark plug boot and use a spark plug wrench to remove the plug. See Fig. 6-3. Spark Plug Spark Plug Boot Cleaning the Engine If the engine has been running, allow it to cool for at least half an hour before cleaning. Periodically remove dirt build-up from the engine. Clean around the muffler. Clean with a brush or compressed air. CAUTION! Do not spray engine with water to clean because water could contaminate fuel. Using a garden hose or pressure washing equipment can also force water into the muffler opening. Water that passes through the muffler can enter the cylinder, causing damage. WARNING! Accumulation of debris around muffler could cause a fire. Inspect and clean before every use. Figure 6-3 2. Visually inspect the spark plug. Discard the spark plug if there is apparent wear, or if the insulator is cracked or chipped. Clean the spark plug with a wire brush if it is to be reused. 3. Measure the plug gap with a feeler gauge. Correct as necessary by bending side electrode. See Fig. 6-4. The gap should be set to 0.030 in. Electrode 0.02-0.03 in. 0.60-0.80 mm Figure 6-4 18 Section 7 - Engine Maintenance