Trouble Shooting The Engine - Talon Tools AT3351A User Manual

A
B
Fig. 9
• FUEL CAP / FUEL FILTER
CAUTION: Remove fuel from unit and store
in approved container before starting this
procedure. Open fuel cap slowly to release
any pressure which may have formed in fuel
tank.
1. Lift fuel line and filter (A) out of tank. A steel wire (B)
with a hook or a paper clip works well (Fig. 10A).
2. Pull off with a twisting motion (Fig. 10B).
3. Replace fuel filter (C).
NOTE: Never operate the trimmer without the fuel filter.
Internal engine damage could result!
B
A
C
Fig. 10A Fig. 10B
• CARBURETOR ADJUSTMENT
The carburetor was pre-set at the factory for optimum per-
formance. If further adjustments are necessary, please
take your unit to the nearest Authorized Service Center.
• SPARK PLUG
1. Spark plug gap = .025" (.635mm) (Fig. 11).
2. Torque to 105 to 130 inch pounds (12 to 15 N•m).
Connect spark plug boot.
F
E
Fig. 11 Fig. 12
• DEBRIS SHIELD KNIFE SHARPENING
1. Remove cutter knife (E) from debris shield (F) (Fig.
12).
2. Place knife in a bench vise. Sharpen knife using a flat
file, being careful to maintain the angle of cutting
edge. File in one direction only.
• STORING A UNIT
C
WARNING: Failure to follow these steps may
cause varnish to form in the carburetor and
difficult starting or permanent damage follow-
ing storage.
1. Perform all the general maintenance recommended
in the Maintenance Section of your User Manual.
2. Clean exterior of engine, drive shaft assembly, debris
shield and linehead.
3. Drain fuel from the fuel tank.
4. After fuel is drained, start engine.
5. Run engine at idle until unit stops. This will purge the
carburetor of fuel.
6. Allow engine to cool (approx. 5 minutes).
7. Using a spark plug wrench, remove the spark plug.
8. Pour 1 teaspoon of clean 2-cycle oil into the
combustion chamber. Pull starter rope slowly several
times to coat internal components. Replace spark
plug.
9. Store unit in a cool, dry place away from any source
of ignition such as an oil burner, water heater, etc.
• REMOVING A UNIT FROM STORAGE
1. Remove spark plug.
2. Pull starter rope briskly to clear excess oil from com-
bustion chamber.
3. Clean and gap spark plug or install a new spark plug
with proper gap.
4. Prepare unit for operation.
5. Fill fuel tank with proper fuel / oil mixture. See Fuel
and Lubrication Section.
8
AU
PROBLEM
Unit won't start or starts but will
not run.
Unit starts, but engine has low
power.
Engine hesitates.
No power under load.
Runs erratically.
Smokes excessively.

TROUBLE SHOOTING THE ENGINE

PROBABLE CAUSE
Incorrect starting procedures. Follow instructions in the User Manual.
Incorrect carburetor mixture adjustment Have carburetor adjusted by an
setting. Authorized Service Center.
Fouled spark plug Clean / gap or replace plug.
Fuel filter plugged. Replace fuel filter.
Incorrect lever position on choke. Move to RUN position.
Dirty air filter. Remove, clean and reinstall filter.
Incorrect carburetor mixture adjustment Have carburetor adjusted by an
setting. Authorized Service Center.
Incorrect carburetor mixture adjustment Have carburetor adjusted by an
setting. Authorized Service Center.
Incorrectly gapped spark plug. Clean / gap or replace plug.
Incorrect carburetor mixture adjustment Have carburetor adjusted by an
setting. Authorized Service Center.
Incorrect fuel mixture. Use properly mixed fuel (25:1 mixture).
9
AU
CORRECTIVE ACTION