Storage; Troubleshooting - Scheppach HS720 Translation Of Original Instruction Manual

21. Storage

• Store the device and its accessories in a dark, dry
and frost-free place that is inaccessible to children.
• Store the machine in the transport position.
• The optimum storage temperature lies between 5
and 30 ˚C.
• Cover the tool to protect it from dust or moisture.
• Store the operating manual with the tool.

22. 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 Possible cause
The saw does not 1. Mechanical brake is defective.
brake when switch-
ing the machine off.
Saw blade is loose 1. Fixing nut not tight enough.
after the motor is
switched off.
Burnt areas on the 1. Blunt saw blade.
cutting surface. 2. Incorrect saw blade.
Engine does not 1. Spark plug cable unplugged.
start. 2. No fuel or old fuel.
3. Choke not in open position.
4. Fuel line clogged.
5. Contaminated spark plug.
6. Engine flooded.
7. Engine oil level low.
Engine runs errati- 1. Spark plug cable loose.
cally. 2. Engine runs with CHOKE.
3. Fuel line clogged or old fuel.
4. Ventilation blocked.
5. Water or contamination in the fuel
system.
6. Contaminated air filter.
7. Incorrect carburettor setting.
Motor is overheated. 1. Engine oil level low.
2. Contaminated air filter.
3. Airflow restricted.
4. Carburettor not adjusted correctly.
Engine does not 1. Mains fuse blown.
start. 2. Extension cable defective.
3. Connection to the engine or
switch not OK.
4. Motor or switch faulty.
Incorrect motor rota- 1. Capacitor defective.
tion direction. 2. Incorrect polarity /
Incorrect connection
Motor not supplying 1. Cross section of the extension
power, fuse tripping. lead insufficient.
2. Overload due to blunt saw blade.
34 | GB
Remedy
1. Have the brake replaced.
1. Tighten fixing nut; right-hand thread (90Nm).
1. Sharpen saw blade (by a specialist).
2. Replace saw blade.
1. Re-connect the spark plug cable to the spark plug.
2. Fill with clean, fresh petrol.
3. The throttle must be positioned in the choke position
during cold starting.
4. Clean the fuel line.
5. Clean, set gap or replace.
6. Wait a few minutes before restarting, but do not allow
the engine to prime.
7. The oil monitor prevents the engine from starting if the
oil level is too low; check the oil level.
1. Connect and fasten the spark plug cable.
2. Set the choker-arm to OFF.
3. Clean the fuel line. Fill the tank with clean, fresh petrol.
4. Clean the de-aerator.
5. Empty the tank. Fill the tank with fresh fuel.
6. Clean or replace the air filter.
7. Contact the service department.
1. Fill crankcase with correct oil.
2. Clean the air filter.
3. Remove and clean the housing.
4. Contact the service department.
1. Check mains fuse.
2. Replace the extension lead.
3. Have this checked by an electrician.
4. Have this checked by an electrician.
1. Have this checked by an electrician.
2. Change direction of rotation with phase inverter / Have
an electrician change the polarity of the wall plug.
1. see "Electrical connection".
2. Replacing the saw blade.
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