TROUBLE SHOOTING
Trouble shooting schematic
Faults that can develop on the chain saw are
divided into four groups as follows. In each cat-
egory, possible malfunctions are shown on the left,
with a list of possible faults on the right. The most
probable fault is given first and so on.
Starting
Idling (low rpm) (cont.)
Difficult starting
Adjust L-screw
Air filter blocked
Idles when L-screw
closed
Worn needle valve/needle
Leaking control diaphragm/
cover plate
Control system sticking
Worn throttle lever
Faulty diffuser jet
Choke not working correctly
Worn choke shaft
Worn choke plate
Fuel filter blocked
Fuel line blocked
Idling uneven
Fuel filter blocked
Fuel line blocked
Piston ring seized
Blocked impulse channel
Leaking manifold
Carburettor
leaking fuel
Loose or faulty fuel pipe
Hole in diaphragm
Loose carburettor mounting
Worn throttle valve shaft
Loose throttle valve screw
Worn throttle valve
Control system sticking
Leak in throttle system (air or
fuel)
Worn needle valve/needle
Control system sticking
Control system set too high
Leak in control system (air or
fuel)
Loose cover on carburettor
pump side
Control diaphragm centre knob
is worn
Hole in diaphragm
Leaking control diaphragm/
cover plate
Flooding when
the engine is not
running
Worn needle valve
Control system set too high
Control system sticking
Crankcase leaking
L-screw requires
constant adjustment
Fuel line blocked
Idling (low rpm)
Control system set too high
Control system sticking
Control system (air or fuel)
Leaking control diaphragm/
cover plate
Will not idle
Adjust L-screw
Leaking manifold (intermediate)
Loose carburettor mounting
Loose or faulty fuel pipe
Fuel filter blocked
Faulty diffuser jet
Crankcase leaking
Fuel line blocked
Control system set too high
Control system sticking
Control system damaged
Worn needle valve
Leaking control diaphragm/
cover plate
Fuel tank breather blocked
Throttle shaft and lever stiff
Throttle cable sticking
Defective throttle return spring
Bent throttle lever shaft stop
Faulty diffuser jet
Too much fuel at idling
Control system incorrectly
assembled
Idling too rich
Adjust L-screw
Worn needle valve/needle
Control system set too high
Worn throttle lever
Leaking control diaphragm/
cover plate
Control system sticking
40
– English
| Categories | Chainsaw Manuals, Husqvarna Chainsaw Manuals |
|---|---|
| Tags | Husqvarna 242XP, Husqvarna 246, Husqvarna 254XP, Husqvarna 257, Husqvarna 262XP, Husqvarna 268, Husqvarna 268K, Husqvarna 272K, Husqvarna 272S, Husqvarna 272XP, Husqvarna 281XP, Husqvarna 288XP, Husqvarna 3120XP, Husqvarna 36, Husqvarna 394XP, Husqvarna 40, Husqvarna 41, Husqvarna 42, Husqvarna 45, Husqvarna 51, Husqvarna 55, Husqvarna 61 |
| Model Year | 1997, 1998, 1999, 2000, 2001, 2002 |
| Download File |
|
| Document Type | Operator's Manual |
| Language | English |
| Product Brand | Husqvarna, Chainsaw |
| Document File Type | |
| Publisher | husqvarna.com |
| Wikipedia's Page | Husqvarna |
| Copyright | Attribution Non-commercial |
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