Craftsman 536881851 - Manual (Page 20)

MAINTENANCE
ENGINE
LUBRICATION
Check the crankcase oil level before
starting the engine and after each eight
(8) hours of continuous use. See
Figure 18. Add SA.E. 5W30 motor oil
as needed. Synthetic 5W30 is accept­
able for all temperatures. Tighten fill
cap/dipstick securely each time you
check the oil level.
Oil Fill Cap/Dipstick
Oil Drain
Plug s f
NOTE: Oil level
Change the oil every fifty (50) hours or
at least once a year if the snow thrower
is not used for ^ (50) 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. When the engine is warm, remove
the oil drain plug and the oil fill
cap/dipstick (see Figure 18). Drain
the oil into a suitable container.
3. After draining all the oil, reinstall the
oil drain plug securely.
4. Fill the engine crankcase with the
recommended motor oil, pouring
slowly. DO NOT OVERFILL. See
To Add Oil” in the Operation Sec­
tion.
FULL mark.
Figure 18
SPARK PLUG
Check the spark plug every twenty-
five (25) hours. Replace the spark plug
if the electrodes are pitted or burned, if
the porcelain is cracked, or every 100
hours of use.
1 .
2.
Make sure the spark plug is clean.
Clean the spark plug by carefully
scraping the electrodes (dp not
sand blast or use a wire brush).
Check the spark plug gap with a
feeler gauge and reset gap to 0.30”
If necessary. See Figure 19.
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"
Rgure 19
20