Sears Craftsman 944.621531, Руководство пользователя, Страница: 11 / 32

11
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 maintenance. Clean muffler area of all grass, dirt, and debris.
Do not touch hot muffler or cylinder fins as contact may cause burns.
FIG. 12
OIL
FILLER
PLUG
OIL
DRAIN
PLUG
OIL LEVEL
TO CHANGE ENGINE OIL (See Figs. 11 and 12)
Determine temperature range expected before oil change.
All oil must meet API service classification SF-SJ.
•
Be sure tiller is on level surface.
• Oil will drain more freely when warm.
• Catch oil in a suitable container.
• Remove drain plug.
• Tip tiller forward to drain oil.
• After oil has drained completely, replace oil drain plug
and tighten securely.
• Remove oil filler plug. Be careful not to allow dirt to enter
the engine.
• Refill engine with oil. See “CHECK ENGINE OIL
LEVEL” in the Operation section of this manual.
AIR CLEANER (See Fig. 13)
Service air cleaner cartridge every 50 hours, more often if
engine is used in very dusty conditions.
•
Loosen air cleaner screws, one on each side of cover.
• Remove air cleaner cover.
• Carefully remove air cleaner cartridge. Be careful. Do
not allow dirt or debris to fall into carburetor.
• Clean by tapping gently on a flat surface.
• If very dirty or damaged, replace cartridge.
• Clean and replace cover. Tighten screws 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.
FIG. 11
COOLING SYSTEM (See Fig. 14)
Your engine is air cooled. For proper engine performance
and long life keep your engine clean.
•
Clean air screen frequently using a stiff-bristled brush.
• Remove blower housing and clean as necessary.
• Keep cylinder fins free of dirt and chaff.
FIG. 14
MUFFLER
AIR SCREEN
BLOWER
HOUSING
CYLINDER FINS
AIR CLEANER
CARTRIDGE
AIR
CLEANER
SCREW
COVER
FIG. 13
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SF-SJ. Select the oil’s SAE viscosity grade
according to your expected temperature.
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
32°F (0°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
motor oil or equivalent. Tighten oil filler plug securely each
time you check the oil level.
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
SAE VISCOSITY GRADES
-20 0 30 40
80
100
-30
-20 0 20 30
40
F
C
32
-10
10
60
5W-30
SAE 30
CUSTOMER RESPONSIBILITIES