Homelite UT70131 - Manual (Page 20)

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TROUBLESHOOTING
PROBLEM PROBLEM PROBLEM PROBLEM PROBLEM POSSIBLE CAUSE POSSIBLE CAUSE POSSIBLE CAUSE POSSIBLE CAUSE POSSIBLE CAUSE SOLUTION SOLUTION SOLUTION SOLUTION SOLUTION
IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM, CONTACT YOUR AUTHORISED SERVICE DEALER.
1. Lubricate with silicone spray.
2. Install more string. Refer to “String Replace-
ment” earlier in this manual.
3. Pull strings while alternately pressing down
on and releasing spool retainer.
4. Remove string from spool and rewind. Refer
to “String Replacement” earlier in this manual.
5. Advance string at full throttle.
1. Cut tall grass from the top down.
2. Operate trimmer at full throttle.
Clean threads and lubricate with grease - if no
improvement, replace spool retainer.
1. Operate trimmer at full throttle.
2. Use fresh fuel and the correct 2-cycle oil mix.
3. Clean air filter. Refer to “Replacing and
Cleaning the Air Filter” earlier in this manual.
4. Turn “H” needle clockwise 1/16 - 1/8 turn.
See Figure 25.
String will not advance:
Grass wraps round shaft
housing and string head:
Spool retainer hard to turn:
Oil drips from silencer:
1. String welded to itself.
2. Not enough string on spool.
3. String worn too short.
4. String tangled on spool.
5. Engine speed too slow.
1. Cutting tall grass at ground level.
2. Operating trimmer at part throttle.
Screw threads dirty or damaged.
1. Operating trimmer at part throttle
2. Check oil/fuel mixture.
3. Air filter dirty.
4. Carburettor requires adjustment.
NOTE: The carburettor adjustment needle(s) are equipped with
plastic cap(s) which prevent anticlockwise rotation from the original
factory adjustment. If your unit exhibits specific performance
problem(s) where the Troubleshooting Section recommends an
anticlockwise needle adjustment and no adjustments have been
made since original purchase, the unit should be taken to a factory-
authorised service dealer for repair. In most cases, the needed
adjustment is a simple task for the factory-trained service represen-
tative.
“L” LO
NEEDLE
“H” HIGH
NEEDLE
IDLE SPEED
SCREW
Fig. 25