Homelite UT70121A manual Idle Speed Screw Mixture Needle, Troubleshooting, Problem, Possible Cause

TROUBLESHOOTING

IF THESE SOLUTIONS DO NOT SOLVE THE PROBLEM, CONTACT YOUR AUTHORISED SERVICE DEALER.

PROBLEM POSSIBLE CAUSE SOLUTION

Grass wraps round drive shaft housing and string head:

1.Cutting tall grass at ground level.

2.Operating trimmer at part throttle.

1.Cut tall grass from the top down.

2.Operate trimmer at full throttle.

Spool retainer hard to	Screw threads dirty or damaged.
turn:

Clean threads and lubricate with grease - if no improve- ment, replace spool retainer.

Oil drips from silencer:	1.	Operating trimmer at
		part throttle.
	2.	Check oil/fuel mixture.
	3.	Air filter dirty.
	4.	Carburettor requires
		adjustment.

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 Air Filter” earlier in this manual.

4.Turn mixture needle clockwise 1/16 turn. See Figure 18.

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 Trouble Shoot- ing Section recommends a anticlockwise needle adjust- ment 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 representative.

IDLE SPEED

SCREW

MIXTURE

NEEDLE

Fig. 18

16