Homelite UT70129, F3055 manual Idle Speed Screw Needle

TROUBLESHOOTING

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

PROBLEM	POSSIBLE CAUSE		SOLUTION
String will not advance:	1. String welded to itself.		1.	Lubricate with silicone spray.
	2.	Not enough string on spool.	2.	Install more string. Refer to “String Replacement”
				earlier in this manual.
	3.	String worn too short.	3.	Pull strings while alternately pressing down on and
				releasing spool retainer.
	4.	String tangled on spool.	4.	Remove string from spool and rewind. Refer to “String
				Replacement” earlier in this manual.
	5.	Engine speed too slow.	5.	Advance string at full throttle.

Grass wraps round shaft	1.	Cutting tall grass at ground
housing and string head:		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.

1. Operating trimmer at part

Oil drips from silencer: throttle.

2. Check oil/fuel mixture.

3. Air filter dirty.

4. Carburettor requires adjust- ment.

1.Operate trimmer at full throttle.

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

3.Clean per instruction in Maintenance Section.

4.Turn “H” needle clockwise 1/16 - 1/8 turn. See Figure 25.

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 representative.

IDLE SPEED

SCREW

“L” LO

NEEDLE

“H” HIGH NEEDLE

Fig. 25

20