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Troubleshooting guide
DANGER
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.
Problem
Cause
Solution
Engine cranks
-
but hard to start
-
does not start
Engine cranks
Fuel at
carburetor
No fuel at
carburetor
1. Fuel filter clogged
2. Fuel line clogged
3. Carburetor
1. Clean or replace
2. Clean
3. Ask your local dealer
Fuel at cylinder
No fuel at
cylinder
Carburetor
Ask your local dealer
Muffler wet with
fuel
Fuel mixture is too rich
4. Open choke
5. Clean/replace air filter
6. Adjust carburetor
7. Ask your local dealer
Spark at end of
plug wire
No spark at end
of plug wire
1. Ignition switch off
2. Electrical problem
1. Turn switch on
2. Ask your local dealer
Spark at plug
No spark at
plug
1. Spark gap incorrect
2. Covered with carbon
3. Fouled with fuel
4. Spark plug defective
1. Adjust gap to specification
2. Clean or replace
3. Clean or replace
4. Replace plug
Engine does
not crank
Internal engine problem
Ask your local dealer
Engine runs
Dies or accelerates poorly
1. Air filter dirty
2. Fuel filter dirty
3. Fuel vent blocked
4. Spark plug
5. Carburetor
6. Cooling system
blocked
7. Exhaust port/spark
arrestor screen
blocked
1. Clean or replace
2. Clean or replace
3. Clean
4. Clean and adjust/replace
5. Adjust
6. Clean
7. Clean
information
If your chain saw seems to need further service, please consult with your local authorized dealer or service center.
Summary of Contents for NT6260
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