Scheppach HS720 Traduction Des Instructions D'origine page 34

23. Troubleshooting
Important note in the case of repairs:
For return delivery of the device for repair, please ensure for safety reasons that it is free of oil and fuel when it is sent to
the service centre.
Fault
The saw does not brake Brake is defective
when switching the
machine off
Saw blade is loose after Fixing nut not tight enough
the engine is switched
off
Burnt areas on the Blunt saw blade
cutting surface
Incorrect saw blade
Engine does not start Spark plug cable unplugged.
No fuel or old fuel
Choke not in open position
Fuel line clogged.
Contaminated spark plug.
Engine flooded
Engine oil level low
Engine runs erratically Spark plug cable loose
Engine runs with choke
Fuel line clogged or old fuel
Ventilation blocked
Water or contamination in the fuel system Empty the tank and fill it with fresh fuel.
Contaminated air filter
Incorrect carburettor setting
Engine overheating Engine oil level low
Contaminated air filter
Airflow restricted
Carburettor not adjusted correctly
Engine does not start Mains fuse blown
Extension lead defective
Connection to the engine or switch not OK Have this checked by an electrician
Engine or switch faulty
Incorrect engine rota- Capacitor defective
tional direction
Polarity reversed
Incorrect connection
Engine not supplying Cross section of the extension cable
power, fuse tripping insufficient
Overload due to blunt saw blade
Saw blade jammed
m Electrical maintenance work may only be carried out by a qualified electrician!
34 | GB
Possible cause
www.scheppach.com
Remedy
Have the brake replaced
Tighten fixing nut; right-hand thread (90Nm)
Sharpen saw blade by a specialist
Replace saw blade
Connect the spark plug cable securely to the
spark plug
Fill with clean, fresh petrol
Move the throttle lever to the choke position
during a cold start
Clean the fuel line
Clean the spark plug, set the gap or replace
spark plug
Wait a few minutes before restarting, but do not
allow the engine to prime
The oil monitor prevents the engine from starting
if the oil level is too low: Check the oil level
Connect and fasten the spark plug cable
Turn the choke lever to OFF
Clean the fuel line and fill the tank with clean,
fresh petrol
Clean the ventilation
Clean or replace the air filter
Contact service
Fill crankcase with correct oil.
Clean the air filter
Remove and clean the housing.
Contact service.
Check mains fuse
Replace the extension lead
Have this checked by an electrician
Have this checked by an electrician
Change direction of rotation with phase inverter
Have an electrician change the polarity of the
wall socket poles
See "Electrical connection"
Replace the saw blade
Switch off the machine, pull out the mains plug
and release the blockage