Husqvarna 335LX 用户手册

English

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Try to find the highest idling speed, turning the low speed 
needle L clockwise respectively counter-clockwise. When 
the highest speed has been found, turn the low speed 
needle L 1/4 turn counter-clockwise.

CAUTION!  If the cutting attachment rotates when the 
engine is idling the idle adjustment screw T should be 
turned anti-clockwise until the cutting attachment stops.

Adjust the idle speed using the idle adjustment screw T, if 
it is necessary to readjust. First turn the idle adjustment 
screw T clockwise until the cutting attachment starts to 
rotate. Then turn the screw anticlockwise until the cutting 
attachment stops. The idle speed is correctly adjusted 
when the engine will run smoothly in every position. The 
idle speed should also be well below the speed at which 
the cutting attachment starts to rotate.

The high speed jet H affects the engine power, speed, 
temperature and fuel consumption. If the high speed jet H 
is set too lean (screwed in too far) the engine speed will 
be too high and cause engine damage. Do not let the 
engine run at full speed for more than 10 seconds.

The machine is equipped with speed control in the ignition 
system. It is extremely important to be aware of this when 
adjusting the carburettor.

343R, 345RX: Speed control at: 12500 rpm

343F, 343FR, 343FRM, 345FX, 345FXT: Speed control 
at: 13500 rpm

When attempting to adjust the speed over that specified, 
the speed is not changed, but only causes the engine to 
receive too little fuel resulting in a large risk of engine 
failure.

Run the machine warm for approximately 5 minutes 
alternating between short intervals of full throttle and 
idling. When the carburettor is to be adjusted, apply full 
throttle and turn the H-needle anti-clockwise until the 
engine speed reaches 10,500-11,000 r/min (burbles) or 
until the cap reaches its stop position. Now turn the H-
needle slowly clockwise until the engine reaches the 
speed when the speed control comes into force. In some 
cases, speed control can come into force at 200-300 revs 
below or above that specified. It is important that you do 
not continue to turn the H-needle clockwise when the 
engine speed has stabilised. Screw the H-needle (anti-
clockwise) a few tenths of a turn instead.

Ensure the length of the trimmer cord is correct, i.e. 
exactly reaches the knife on the trimmer guard. Use either 
3 mm or 3.3 mm diameter trimmer cord.

Run the machine warm for about 5 minutes mostly at full 
throttle. When the carburettor is to be adjusted, apply full 
throttle and turn the H-needle anti-clockwise until the 
engine burbles or until the cap reaches its stop position. 
(If the engine runs smoothly when the cap is in its stop 
position no further adjustment is necessary!) Turn the H-
needle slowly clockwise until the engine runs absolutely 

H