Poulan Pro RT900 REAR TINE TILLER - Manual (Page 12)

12
AIR CLEANER
CARTRIDGE
COVER
AIR CLEANER
SCREW
MAINTENANCE
OIL FILLER
PLUG
OIL LEVEL
OIL
DRAIN
PLUG
Fig. 15
Disconnect spark plug wire before performing any maintenance (except car bu re tor adjustment) to
prevent accidental start ing of engine.
Prevent fires! Keep the engine free of grass, leaves, spilled oil, or fuel. Re move 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. 16
TO CHANGE ENGINE OIL (See Figs. 15 and 16)
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 con tain er.
• 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.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SG-SL. Select the oil’s SAE vis cos i ty 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
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 25 hours of operation 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.
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
SAE VISCOSITY GRADES
-20 0 30 40 80 100
-30 -20 4 20 30 40
F
C -10 10
60
10W-30 / 5W-30
SAE 30
oil_visc_chart5_e(drt)
Fig. 17
AIR CLEANER (See Fig. 17)
Service air cleaner cartridge every twenty-five 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 care ful. Do
not allow dirt or de bris to fall into carburetor.
• Clean by tapping gently on a flat surface.
• If very dirty or damaged, replace cartridge.
• Clean and re place cover. Tighten screws securely.
IMPORTANT: PETROLEUM SOLVENTS, SUCH AS KER O SENE,
ARE NOT TO BE USED TO CLEAN THE CAR TRIDGE. THEY
MAY CAUSE DETERIORATION OF THE CARTRIDGE. DO
NOT OIL CARTRIDGE. DO NOT USE PRESSURIZED AIR TO
CLEAN OR DRY CARTRIDGE.