Maintenance - Poulan Pro HDF550N Owner's Manual

Disconnect spark plug wire before performing any maintenance (except car bu re tor adjustment) to
prevent accidental start ing of engine.
Prevent fi res! Keep the engine free of grass, leaves, spilled oil, or fuel. Re move fuel from tank
before tipping unit for maintenance. Clean muffl er area of all grass, dirt, and debris.
Do not touch hot muffl er or cylinder fi ns as contact may cause burns.
ENGINE
LUBRICATION
Use only high quality detergent oil rated with API service
classifi cation SF-SJ. Select the oil's SAE vis cos i ty grade
according to your expected temperature.
SAE VISCOSITY GRADES
5W-30
-20 0 30
F
C -30 -20 -10
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
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 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 fi ve (5) hours of continuous use. Add SAE
30 motor oil or equivalent. Tighten oil fi ller plug securely
each time you check the oil level.
TO CHANGE ENGINE OIL (See Figs. 11 and 12)
Determine temperature range expected before oil change.
All oil must meet API service classifi cation 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 fi ller plug. Be careful not to allow dirt to
enter the engine.
• Refi ll engine with oil. See "CHECK ENGINE OIL LEVEL"
in the Operation section of this manual.

MAINTENANCE

SAE 30
32 40 60 80
0 10 20 30
oil_visc_chart1_e
FIG. 11
OIL
DRAIN
PLUG
100
40
AIR CLEANER (See Fig. 13)
Service air cleaner cartridge every twenty-fi ve 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 fl at surface.
• If very dirty or damaged, replace cartridge.
• Clean and re place cover. Tighten screws securely.
AIR
CLEANER
SCREW
11
OIL FILLER
PLUG
FIG. 12
CAUTION: Petroleum sol vents, such as
kerosene, are not to be used to clean
cartridge. They may cause de te ri o ra tion
of the cartridge. Do not oil car tridge.
Do not use pres sur ized air to clean or
dry cartridge.
AIR CLEAN ER CAR TRIDGE
COV ER
FIG. 13
OIL LEVEL