Cooling System - Sears Craftsman 917.299852 Owner's Manual

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Disconnect spark plug wire before performingany maintenance (exceptcarburetor adjustment)to prevent I
accidental starting of engine.
!
Prevent fires! Keepthe enginefree of grass,leaves, spilledoil, or fuel. Removefuel from tank beforetipping
unit for maintenance. Clean mufflerareaof alt grass,dirt, and debris.
Do not touch hot muffleror cylinderfins as contact maycause burns.
ENGINE
LUBRICATION
Use only: high quality detergent oil rated with API service
c assific;_tion SG. Select the oil's SAE viscosity grade
according to your expected temperature.
i
oF .20 _ 0 o 30 ° 32 ° 40+ 60_ 80 + t00 °
°o ' ' ........ ' . ..... _ 1'0 _ _oo " ................ '-
-30 ° -2Ce +10° ° . 30 + 40_
FIG. 16
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). Checkyour engine oil level more frequently to
avoid possible engine damage from running low on oiL
Change the oil after the first two hours of operation and
every 25 hours thereafter or at least once a year if the tiller
is not used for 25 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.
TO CHANGE ENGINE OIL (See Figs. 16 and 17)
Determinetemperature range expected before oil change.
All oil must meet API service classification SG.
• 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.
OIL
DRAIN
PLUG
FILLER
PLUG
FIG. 17
AIR CLEANER (See Fig. 18)
Service aircleaner cartridge every twenty-five hours, more
often _fengine is used in very dusty conditions.
* Loosen aircleaner screws, one on each side of cover.
o Remove air cleaner cover. ....
o 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, replace or wash in anonsudsing detergent
and warm water solution. Rinse thoroughly with Water
flowing from mesh side until water is clear. Allow
cartridge to stand and air dry thoroughly before using.
. Clean and replace cover. Tighten screws securely.
! & CAUTION: Petroleum solvents, such
as kerosene, are not to be used to clean
cartridge. They may cause deteriora-
tion of the cartridge. Do not oil car-
tridge. Do not use pressurized air to
clean or dry cartridge.
AIR
CLEANER
SCREW"_
COVER
;]lJ _AIR CLEANER
FIG. 18
14
COOLING SYSTEM (See Fig. 19)
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.
CYLINDER RNS
BLOWER
HOUSING
jAtR
SCREEN
)
FIG. 19