How to adjust carburetor Husqvarna 125bt
You will need a special tool as the adjuster screws have splines not slots, Husqvarna part no. 530035560, the screws are marked H and L, if in any doubt the L screw will always be nearest to the cylinder, start the machine and warm up, at idle start to wind the L screw in ( these are fuel screws, so unwind to increase fuel flow ) the engine revs will increase, there will then come a point where the revs start to die, at this point unscrew approx. 15 minutes on a clock face, check the unit accelerates smoothly if not turn the L screw a further 5 minutes, take machine to full revs, screw the H screw in until the revs start to die, then unscrew 15 minutes on a clock face.
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