Husqvarna 327LDX-series User Manual

English

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 19

Try to find the highest idle speed by turning the low speed 
jet L clockwise then anti-clockwise. When the highest 
speed has been found, turn the low speed jet L 1/4 turn 
anti-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.

Apply full throttle and turn the high speed jet H very slowly 
clockwise until the engine slows down. Then turn the high 
speed jet H very slowly anticlockwise until the engine 
starts to run unevenly. Now turn the high speed jet H 
slowly clockwise a little way until the engine runs 
smoothly. 

Note that the engine should not be under load when you 
adjust the high speed jet H. You should therefore remove 
the cutting attachment, nut, support flange and drive disc 
before adjusting the high speed jet H.

The high speed jet H is adjusted correctly when the 
machine burbles a little. If the machine races then the 
setting is too lean. If the engine produces a lot of smoke 
and burbles a lot then the setting is too rich.

CAUTION!  For optimum adjustment of the carburettor, 
contact a qualified dealer/service workshop that has a 
revolution counter at their disposal. 

When the carburettor is correctly adjusted the machine 
will accelerate without hesitation and burble a little at 
maximum speed. It is also important that the cutting 
attachment does not rotate at idle. If the low speed jet L is 
set too lean it may cause starting difficulties and poor 
acceleration.

If the high speed jet H is set too lean it will result in less 
power, less performance, poor acceleration and/or 
damage to the engine.

If both the L and H jets are set too rich it will results in 
acceleration problems or too low a working speed.

H