Sears CRAFTSMAN 850 Serie Manual Del Propietário página 15

Ai_CAUTION: Disconnect spark plug
wire before performing any maintenance
(except carburetor adjustment) to prevent
accidental starting of engine.
Prevent fires! Keep the engine free of
grass, leaves, spilled oil, or fuel. Remove
fuel from tank before tipping unit for main-
tenance. Clean muffler area of all grass,
dirt, and debris.
Do not touch hot muffler or cylinder fins as
contact may cause burns.
ENGINE
LUBRICATION
Use only high quality detergent oil rated
with API service classification SG-SL Se-
lect the oil's SAE viscosity grade accord-
ing to your expected temperature.
1
SAE VISCOSITY GRADES |
1
F -20 0 30 40 60 80 100
i i i i i
C -30 -2_0 -10 4 1_0 20 30 40
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
o][ visc chartSe(drt)
NOTE: Although multi-viscosity oils
(5W-30, 10W-30, etc.) improve starting
in cold weather, these multi-viscosity oils
will result in increased oil consumption
when used above 40°F (4°C). Check your
engine oil level more frequently to avoid
possible engine damage from running low
on oil.
Change the oil after every 50 hours of
operation or at least once a year if the tiller
is not used for 50 hours in one year.
Check the crankcase oil level before
starting the engine and after each five (5)
hours of continuous use. Add SAE 30 mo-
tor oil or equivalent. Tighten oil filler plug
securely each time you check the oil level.
TO CHANGE ENGINE OIL
Determine temperature range expected
before oil change. All oil must meet API
service classification SG-SL.
, Be sure tiller is on level surface.
, Oil will drain more freely when warm.
• Use a funnel to prevent oil spill on tiller,
and catch oil in a suitable container.
1. Remove drain plug.
For easier removal of plug use 7/16-
12 Pt. socket with extension.
2. Tip tiller forward to drain oil.
3. After oil has drained completely,
replace oil drain plug and tighten se-
curely.
4. Remove oil filler plug. Be careful not
to allow dirt to enter the engine.
5. Refill engine with oil. See "CHECK
ENGINE OIL LEVEl" in the Operation
section of this manual.
AIR CLEANER
Service air cleaner cartridge every
twenty-five hours, more often if engine is
used in very dusty conditions.
1. Loosen air cleaner screw.
2. Remove air cleaner cover.
3. Carefully remove air cleaner cartridge.
Be careful. Do not allow dirt or debris
to fall into carburetor.
4. Clean by tapping gently on a flat sur-
face.
NOTE: If very dirty or damaged, replace
cartridge.
5. Clean and replace cover. Tighten
screw securely.
,_CAUTION: Petroleum solvents, such
as kerosene, are not to be used to clean
cartridge. They may cause deterioration
of the cartridge. Do not oil cartridge. Do
not use pressurized air to clean or dry
cartridge.
Cover
\
Air Cleaner
Screw
Air Cleaner
e
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