Poulan Pro HDF900 Operator's Manual page 11

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.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classification SF-SJ. Select the oil's SAE vis cos i ty grade
according to your expected temperature. (See Fig. 10)
NOTE: Although multi-viscosity oils (5W-30, 10W-30, etc.)
improve starting in cold weather, they 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 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.
CAUTION:Disconnect spark plug wire
before performing any maintenance 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.
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.
MAINTENANCE
Fig. 11
• 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 "FILL ENGINE WITH OIL "
in the Operation section of this manual.
Oil
Drain
Plug
AIR CLEANER (See Fig. 13)
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.
Air Clean er
Car tridge
11
Oil Level
Oil Filler Plug
Fig. 12
Pre-Cleaner
Cover
Air Cleaner
Screws
Fig. 13