Troubleshooting - Husqvarna 570 XP/G Workshop Manual

Troubleshooting

The different faults which may occur on the chain saw are divided into four groups. Within each group possible operating faults are
listed to the left while the probable fault alternatives are listed to the right. The most likely fault is listed first, etc.
Starting
Starting
Clogged air filter
difficulties
Choke does not work
Worn choke shaft
Worn choke valve
The fuel filter is clogged
The fuel line is clogged
Piston ring is stuck
Blocked impulse channel
The carburettor
Loose or defective fuel hose
leaks fuel
Hole in the membrane
Control system is jamming
Control system set too high
Leaking control system (air or fuel)
The cover on the carburettor
pump side is loose
Floods when the
Control system set too high
engine is not
Control system is jamming
running
Idling.(low.speed)
Leaking inlet hose (rubber)
Does not run when
Loose clamping screws
idling
carburettor
Loose or defective fuel hose
The fuel filter is clogged
The fuel line is clogged
Tank venting clogged
The throttle valve shaft is sluggish
Throttle stay is jamming
Defective throttle return spring
Bent valve shaft stop
Faulty diffuser jet
Worn lever arm in the control system
Too high idling
Leaking control diaphragm/
speed
cover plate
56 – English
TROUBLESHOOTING
Idling.(low.speed).(cont.)
Irregular idling
The fuel filter is clogged
The fuel line is clogged
Leaking inlet hose (rubber)
Loose clamping screws carburettor
Worn throttle valve shaft
The throttle valve screw is loose
The throttle valve is worn
Leaking control system (air or fuel)
The control system's centre knob is
worn
Hole in the membrane
Leaking control diaphragm/cover plate
Crankcase leak
Too much fuel
Leaking control diaphragm/
on idling
cover plate