Maintenance - Husqvarna CRT900L Manuel De L'opérateur

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.
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.
SAE VISCOSITY GRADES
10W-30 / 5W-30
-20 0 30
F
C -20
-30 -10
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
Although multi-viscosity oils (5W-30, 10W-30, etc.) im-
prove 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.
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.

MAINTENANCE

SAE 30
40
60 80
4 10
20 30
oil_visc_chart5_e(drt)
Fig. 15
OIL
DRAIN
PLUG
100
40
AIR FILTER (See Fig. 17)
Your engine will not run properly using a dirty air filter.
Clean the foam pre-cleaner after every 25 hours of op er a-
tion or every season. Service paper cartridge every 100
hours of operation or every season, which ev er occurs first.
Service air cleaner more often under dusty conditions.
• Remove cover knob and cover.
TO SERVICE PRE-CLEANER
• Remove foam pre-cleaner from air cleaner cover.
• Wash it in liquid detergent and water.
• Squeeze it dry in a clean cloth.
• If very dirty or damaged, replace pre-cleaner.
• Reinstall pre-cleaner into air cleaner cover.
• Reinstall cover and secure screw.
TO SERVICE CARTRIDGE
• Carefully remove cartridge to prevent debris from
en ter ing carburetor. Clean base carefully to pre vent
debris from entering carburetor.
• Clean cartridge by tap ping gen tly on flat surface. If
very dirty or damaged, replace cartridge.
• Re in stall cartridge, cover with pre-cleaner and se cure
with screw.
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.
12
OIL LEVEL
OIL FILLER
PLUG
Fig. 16