Maintenance; Lubrication; Chipper-Shredder - Craftsman 247.799890 Owner's Manual

5 horsepower 3 cutting stage mulching and bagging
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GENERALRECOMMENDATIONS
WARNING: ALWAYS STOP THE ENGINE
AND DISCONNECT
THE SPARK
PLUG
WIRE
BEFORE
PERFORMING
ANY
MAINTENANCE
OR ADJUSTMENTS.
• Periodically
check all fasteners and be sure they
are tight.
Follow the Maintenance
Schedule
on previous
page.
CHIPPER-SHREDDER
LUBRICATION
Lubricate the pivot points on the chute deflector and
chipper chute once a season using a light oil.
ENGINE
ENGINE OIL
Only use high quality detergent oil rated with API ser-
vice classification
SG. Select the oil's viscosity grade
according to your expected operating temperature.
Colder
,,i
32°F
=
Warmer
5W30
SAE 30
NOTE: Although
multi-viscosity
oils (SE30, 10W30,
etc.) improve starting in cold weather, these multi-vis-
cosity oils will result in increased
oil consumption
when used above 32°F. Check your oil level more fre-
quently to avoid possible engine damage from run-
ning low on oil.
Your four-cycle
engine will normally consume some
oil--therefore,
check engine oil level regularly approx-
imately every five hours of operation and before each
usage. Stop engine and wait several minutes before
checking oil level. With engine level, the oil must be to
FULL mark on dipstick
(refer to figure 7). Change
engine oil after the first five hours of operation, and
every twenty-five hours thereafter.
To Drain Oil:
Drain oil while engine is warm.
a. Remove oil drain plug. Refer to figure 7. Catch
oil in a suitable container.
b. When engine is drained of all oil, replace drain
plug securely.
Refill with fresh oil. Refer to GAS AND OIL FILL-
UP section.
• Replace dipstick.
AIR CLEANER
The air cleaner
prevents
damaging
dirt, dust, etc.,
from entering the carburetor and being forced into the
engine and is important
to engine life and per-
formance.
Never run your engine without air cleaner com-
pletely assembled.
To Service Air Cleaner:
Service pre-cleaner after every 25 hours of use, or at
least once a season.
Service
cartridge
every
100
hours of use, or at least once a season. Service pre-
cleaner and cartridge more often under dusty condi-
tions.
Loosen screw and remove cover.
To service
pre-cleaner,
wash in liquid detergent
and water. Squeeze dry in a clean cloth. Saturate
in engine oil. Squeeze in a clean, absorbent cloth
to remove all excess oil. If pre-cleaner is very dirty,
replace it.
• To service cartridge, clean by tapping gently on a
flat surface.
If very dirty, replace. Do not oil car-
tridge.
NOTE: Do not use petroleum solvents (e.g. kerosene)
or pressurized
air to clean cartridge. They will cause
cartridge to deteriorate.
Reinstall cartridge and pre-cleaner.
Replace cover, and tighten screws securely.
Screw
Cover
_r
dge
Base
FIGURE 10.
CLEAN ENGINE
Clean engine periodically.
Remove
dirt and debris
with a cloth or brush. Cleaning with a forceful spray of
water is not recommended
as water could contami-
nate the fuel system.
Yearly
or every 25 hours, whichever
occurs
first,
remove
the blower
housing
and clean
the areas
shown in figure 11 to avoid overspeeding,
overheating
Page 10

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