Homelite UT70121A Cleaning The Exhaust Port And Silencer, Spark Arrester, String Replacement

MAINTENANCE

STRING REPLACEMENT

See Figures 12, 13, 14 and 15.

1 Stop the engine and disconnect the sparking plug

wire. Hold the string head and unscrew the spool

SPRING

SPOOL

	retainer. Turn anticlockwise.
2	Remove the spool from the string head. NOTE:
	Keep the spring attached to the spool. Remove any
	old string remaining on the spool.
3	Cut two pieces of string, each being approximately
	2.7 m (9 ft) long.
4	Insert the first string into the anchor hole in the
	upper part of the spool. Wind the first string round
	the upper part of the spool anticlockwise, as shown
	by the arrows on the spool. Place string in the slot
	on upper spool flange, leaving about 152 mm (6 in)
	extended beyond the slot. Do not overfill. After
	winding the string, there should be at least 6 mm
	(1/4 in) between the wound string and the outside
	edge of the spool.
5	Repeat above step with second string, using the
	bottom part of spool. Do not overfill.
6	Replace the spool and the spool retainer. Refer to
	“Spool Replacement“ earlier in this manual.

CLEANING THE EXHAUST PORT AND SILENCER

Depending on the type of fuel used, the type and amount of oil used, and/or your operating conditions, the exhaust port and silencer may become blocked with carbon deposits. If you notice a power loss with your petrol-powered tool, a qualified service technician will need to remove these deposits to restore perfor- mance.

SPARK ARRESTER

The spark arrester must be cleaned or replaced every 25 hours or yearly to ensure proper performance of your product. Spark arresters may be in different locations depending on the model purchased. Please contact your nearest service dealer for the location of the spark arrester for your model.

Cleaning Instructions:

■Remove the spark arrester from the silencer.

■If your spark arrester is made of fibreglass, discard and replace.

■If your spark arrester is made of metal, follow these cleaning instructions:

1.Spray the spark arrester with a quality carbon cleaner.

2.Gently clean using a wire brush.

3.Install the new or cleaned spark arrester and reassemble completely before use.

ARROWS ON

SPOOL

ANCHOR

HOLE

FIRST STRING Fig. 12

FIRST STRING

SLOT

Fig. 13

SECOND

STRING

Fig. 14

SLOT	ARROWS ON
	SPOOL

Fig. 15

13