Troubleshooting - Shindaiwa 390SX Owner's/Operator's Manual

Trouble
Engine - hard to start
- does not start
Engine Fuel at carburettor Not fuel at carburettor
cranks
Fuel at cylinder
Spark at end of
plug wire
Spark at plug
Engine
does not
crank
Engine Dies or accelerates poorly
runs
Rotating saw chain at idling speed
All chain saw service operations, other than items listed in the Operator's Manual, should be performed by
competent service personnel.
Fuel vapors are extremely flammable and may cause fire and / or explosion.
Never test for ignition spark by grounding spark plug near cylinder plug hole, otherwise serious personal injury may
result.
NOTE
When starter grip cannot be pulled lightly, the trouble is diagnosed as failure of engine inside.
Please consult your dealer.
If disassembled inadvertently, it can cause injury.

Troubleshooting

No fuel at cylinder
Silencer wet with fuel
No spark at end of
plug wire
No spark at plug
WARNING
Cause
Fuel filter clogged
Fuel line clogged
Carburettor
Carburettor
Fuel mixture is too rich
Ignition switch off
Electrical problem
Spark gap incorrect
Covered with carbon
Fouled with fuel
Spark plug defective
Internal engine problem
Air filter dirty
Fuel filter dirty
Fuel vent plugged
Spark plug
Carburettor
Cooling system plugged
Exhaust port / silencer plugged
Carburettor
Clutch damaged or binded
23
Remedy
Clean or replace
Clean
Ask your shindaiwa dealer
Ask your shindaiwa dealer
Open choke
Clean / replace air filter
Adjust carburettor
Ask your shindaiwa dealer
Turn switch on
Ask your shindaiwa dealer
Adjust 0.6 to 0.7 mm
Clean or replace
Clean or replace
Replace plug
Ask your shindaiwa dealer
Clean or replace
Clean or replace
Clean
Clean and adjust / replace
Adjust
Clean
Clean
Ask your shindaiwa dealer
Ask your shindaiwa dealer