Maintenance - Husqvarna DRT900H Operator's Manual

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 SJ–SN. 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.
TO CHANGE ENGINE OIL (See Figs. 18 & 19)
Determine temperature range expected before oil change.
All oil must meet API service classification SJ–SN.
• 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.
• Tip tiller forward to drain oil.
• After oil has drained completely, replace oil drain plug
and tighten securely.
• Refill engine with oil. See "CHECK ENGINE OIL LEVEL "
in the Operation section of this manual.
• Replace oil drain plug and tighten securely.
OIL
DRAIN
PLUG

MAINTENANCE

Fig. 18
OIL LEVEL
OIL FILLER PLUG
Fig. 19
AIR FILTER (See Fig. 20)
Your engine will not run properly and may be damaged
by using a dirty air filter. Replace the air filter every 100
hours of operation or every season, whichever occurs first.
Service air cleaner more often under dusty conditions.
TO CLEAN AIR FILTER
• Remove cover.
• Carefully remove cartridge.
• Clean by gently tapping on a flat surface. If very dirty,
replace cartridge.
• Install cartridge, then replace cover.
IMPORTANT: PETROLEUM SOLVENTS, SUCH AS KER O SENE,
ARE NOT TO BE USED TO CLEAN CAR TRIDGE. 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 CAR TRIDGE.
13
FILTER COVER
LATCH TABS
TABS
FILTER
Fig. 20