Spark Plug - Craftsman 536.887994 Operator's Manual

NOTE: The oil will drain more freely
when the engine is warm.
3. After draining all the oil, reinstall the
oil drain plug securely.
4. Fill the engine crankcase with
S.A.E. 5W30 motor oil, pouring
slowly. DO NOT OVERFILL. See
"To Add Oil" in the Operation Sec-
tion.
SPARK PLUG
Check the spark plug every twenty-
five (25) hours. Replace the spark plug
if the electrodes are pitted or burned or
if the porcelain is cracked.
1, Make sure the spark plug is clean,
Clean the spark plug by carefully
scraping the electrodes (do not
sand blast or use a wire brush),
2, Check the spark plug gap with a
feeler gauge and reset gap to 0,30"
if necessary. See Figure 15,
3. Before installing the spark plug,
coat the threads lightly with oil for
easy removal. Tighten the spark
plug to a torque of 15 foot-pounds.
Feeler Gauge
0.030"
Spark Plug
Figure 15
F-0310107L 18