Engine Oil; Air Cleaner; Clean Engine; Spark Plug - Craftsman 247.388240 Owner's Manual

Engine OII
Only use high quality detergent oil rated with
API service classificationSF, SG or SH. Select
the oil's viscositygrade accordingto your
expected operating temperature. Refer to page
10 of this manual for viscositychad.
Stop engine and wait several minutesbefore
checking oil level. With engine on level ground,
the oil must be to FULL mark on dipstick.
Change engine oil afterthe first five hours of
operation, and every twenty-five hours
thereafter.
To Change Engine Oil
Change oil after first two operating hotJrsand every
25 operating hoursthereafter. Drain oil while engine
is warm. Followthe instructionsgivenbelow.
Tip the mower with the spark plug facingup.
Place a container under the dipstick.Pull the
dipstickout of oil fill.
Drain the oil sump empty, collectingoil in an
approved container.
Fill oil sump with 21 ounces of fresh SAE 30 oil.
Refer to page 10 of this manual for oilfill-up
instructions.
Air Cleaner
The air cleaner prevents damagingdirt, dust,etc.,
from enteringthe carburetor and beingforced into the
engine and is importantto engine life and
performance. Replace filter once a year or every 100
operating hours, more often ifused in extremelydusty
conditions.
To Service Air Cleaner:
Turn air filter cover counterclockwiseand
remove the cover and filter from the flange.
See Figure 13. Discard filter.
Clean cover and flange thoroughly.
Insert the new filter into the cover.
Place the cover and the filter against flange
with tab on the cover inserted into lower left
corner of slot in flange. See Figure 13.
Push cover firmly against flange and turn it
clockwise as far as it will go. Make sure that the
retainers are locked around the flange. See
Figure 13.
,_ WARNING: Never run the engine without
air cleaner completely assembled.
Clean Engine
Clean engine periodically. Remove dirt and
debris with a cloth or brush.
Frequently remove grass clippings, dirt and
debris from cooling fins, air intake screen and
levers and linkage. This will help ensure
adequate cooling and correct engine speed.
NOTE: Do not clean with a forceful spray of water as
water could contaminate the fuel system.
Spark Plug
Clean spark plug and reset gap to .030" at least
once a season or every 50 hours of operation.
See Figure 14. Spark plug replacement is
recommended at the start of each season. Refer
to engine parts listfor correct spark plug type.
NOTE: Do not sandblast spark plug. Spark p/ug
shouldbe cleaned by scraping or wire brushing and
washing with a commercial solvent.
Feeler gap .030"
Spark Plug
r Cleaner
Filter Retainer
Figure 13
Muffler
&
Figure 14
WARNING: Do not operate the lawn
mower without a muffler, or tamper with
the exhaust system. Damaged mufflers or
spark arresters could create afire hazard.
Temperature of muffler and nearby areas
may exceed 150 ° F(65°C).
13