TROUBLESHOOTING

 

PROBLEM

 

POSSIBLE CAUSE

 

SOLUTION

 

 

 

 

 

 

String will not advance when

1.

String is welded to itself.

1.

Lubricate with silicone spray.

using the EZ Line™ tap

2.

Not enough string on spool.

2.

Install more string. Refer to “String Replace-

advance system

 

 

 

ment” earlier in this manual.

 

 

3.

String is worn too short.

3.

Pull strings while alternately pressing down on

 

 

 

 

 

and releasing spool retainer.

 

 

4.

String is tangled on spool.

4.

Remove string from spool and rewind. Refer to

 

 

 

 

 

“String Replacement” earlier in this manual.

 

 

5.

Engine speed is too slow.

5.

Advance string at full throttle.

 

 

 

 

 

Spool retainer hard to turn

Screw threads are dirty or damaged.

Clean threads and lubricate with grease - if no

when using EZ Line™ tap

 

 

improvement, replace the spool retainer.

advance system

 

 

 

 

 

 

 

 

 

 

Grass wraps around drive-

1.

Cutting tall grass at ground level.

1.

Cut tall grass from the top down to prevent

shaft housing and string

2.

Operating trimmer at part throttle.

 

wrapping.

head

2.

Operate trimmer at full throttle.

 

 

 

 

 

 

 

Oil drips from muffler

1.

Operating trimmer at part throttle.

1.

Operate trimmer at full throttle.

 

 

2.

Check oil/fuel mixture.

2.

Use fresh fuel and the correct 2-cycle oil mix.

 

 

3.

Air filter dirty.

3.

Clean per instruction in Maintenance Section.

 

 

 

 

 

 

 

IDLE SPEED

SCREW

C

B A

STOP

Fig. 22

Page 18

Page 18
Image 18
Homelite UT20044A, UT20024A manual Idle Speed Screw