Craftsman 944.627592 Owner's Manual page 14

CUSTOMER RESPONSIBILITIES
&
Disconnect spark plug wire before performing any maintenance (except carburetor adjustment) to prevent
accidental starting of engine.
Preventfires! Keep the englne free of grass, leaves, apilledoil, orfuel. 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 fine as contact may cause burns.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SF, SG or SH. Select the oil s SAE viscosity
grade according to your expected temperature.
SAE VISCOSITY GRADES
-20 _ O° 30" 32 ° 40"
-30 ° -20 ° -10 ° O° 10" 20" 30"
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
FIG. 18
NOTE: Although multi-viscosity oils (5W-30, 10W-30, etc.)
improve starting in cold weather, these multi-viscosityoils
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.
TO CHANGE ENGINE OIL (See Figs. 18 and 19)
Determine temperature range expected before oil change.
All oil must meet API service classification SF, SG or SH.
• Be sure tiller is on level surface.
• Oil will drain more freely when war m.
• Use a funnel to prevent oil spill on tiller, and catch oil in
a suitable container.
• Remove drain plug, For easier removal of plug use
7/16 12 pt socket with extension.
• 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_
OIL LEVEL
PLUG
AIR FILTER
(See Fig. 20)
Your engine will not run properly using a dirty air filter.
Clean the foam pre-cleaner after every 25 hours of opera-
tion or every season. Service paper cartridge every 100
hours of operation or eve ry season, whichever occurs first.
Service air cleaner more often under dusty conditions.
• Loosen air cleaner cover screws. Remove cover and
air cleaner assembly from base.
• Remove air cleaner assembly from inside cover and
disassemble.
TO SERVICE PRE-CLEANER
• Wash it in liquid detergent and water.
• Squeeze it dry in a clean cloth.
• Saturate it in engine oil. Wrap it in clean, absorbent
cloth and squeeze to remove excess oil.
TO SERVICE CARTRIDGE
• Gently tap the flat side of the paper cartridge to dis-
lodge dirt. Do not wash the paper cartridge or use
pressurized air, as this will damage the cartridge.
Replace a dirty, bent, or damaged cartridge.
• Reassemble retainer on pre-cleaner and cartridge
(screen side of pre-cleaner toward cartridge pleats).
Place assembly into cover.
• Insert tabs on cover into slots in base and tighten cover
screws securely.
"BASE
RETAINER
-SLOT i
COVER SCREWS
DUAL ELEMENT/CARTRIDGE AIR CLEANER
FIG. 20
COOLING SYSTEM
(See Fig. 21)
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.
.CYUNDER
FINS
AIR SCREEN
FIG. 21
FIG. 19 14