Husqvarna 343R, 345RX, 343F, 345FX, 345FXT Carburettor adjustment 345RX/FX, Throttle, needle

		Fuel system			3
Carburettor adjustment 345RX/FX			Carburettor	adjustment 345RX/FX
Adjusting the L-needle			Adjusting the H-	needle
1.	Mount the Trimmy Fix (4 wires) and use 3.3 mm smooth		1. Mount the Trimmy	Fix (4 wires) and use 3.3 mm smooth
	cord. The cord length should be 160 mm measured from the		cord. The cord	length should be 160 mm measured from
	end of the cord to the cord bushing on the trimmer head.		the end of the cord to the cord bushing on the trimmer
2.	Run the engine warm for about 5 minutes.		head.
3.	Turn the L-needle so that the highest speed is attained.		2. Run the engine warm for about 5 minutes.
4.	If the speed exceeds 3,700 rpm, reduce it with the aid of the		3. Turn the H-needle so that the highest speed is attained.
	idling speed’s T-screw (T) and a carry out a new adjustment		4. Reduce the speed by 400 rpm by turning the H-needle
	in accordance with point 3.		anticlockwise. Mount the plastic sleeve on the H-needle
5.	Then turn the L-needle anticlockwise so that the speed drops		so that it cannot be turned anticlockwise.
	by 300 rpm.		5. Then increase the speed by 200 rpm by turning the H-
6.	Then adjust the idling speed to 2,800 rpm by turning the T-		needle clockwise.
	screw.
7.	When mounting the plastic sleeve on the L-needle, the		NOTE!
	needle is turned a quarter-turn anticlockwise once the		If the cutting equipment rotates while idling the T-
	optimal setting has been made and the plastic sleeve is		screw should be turned anticlockwise until it stops
	mounted so that the needle cannot be turned anticlockwise.		rotating.
	Then turn the L-needle back a quarter-turn.
				Carburettor needles with Zama “caps”.

531 00 48-63
531 03 03-98
Throttle	Throttle
Disassemble the cable protector (B),	Remove the bolt (A) and cable protec-
the cover (D) and the throttle from the	tor (B).
handle.	Remove the two bolts (C) and the cover
Remove the bolts and separate the two	(D).
halves of the throttle.	Remove the bolt (E) that attaches the
	throttle to the handle and remove the
	throttle.
	Remove the bolts and separate the two
	halves of the throttle.
502 50 18-01

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