Engine Lubrication - Sears Craftsman 536.887751 Manual Del Operador

ENGINE
LUBRICATION
Check the crankcase oil level before
starting the engine and after each five
(5) hours of continuous use. Add S.A.E.
5W30 motor oil as needed. Tighten fill
cap/dipstick securely each time you
check the oil level.
Oil Fill Cap/Dipstick _ <:_
FULL
Figure 29
Change the oil every twenty-five (25)
hours or at least once a year if the
snow thrower is not used for twenty-five
(25) hours.
TO CHANGE ENGINE OIL
1, Position the snow thrower so that
the oil drain plug is at the lowest
point on the engine,
2, Remove the oil drain plug and the
oil fill cap/dipstick. Drain the oil
into a suitable container.
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.
Figure 30
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.
To access the spark plug, the snow
hood must be removed. See "How To
Remove The Snow Hood" in the Ser-
vice And Adjustment section.
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).
F_)21027L
2. Check the spark plug gap with a
feeler gauge and reset gap to 0.30"
if necessary. See Figure 31.
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"
2_.../
21
Spark Plug
Figure 31