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Husqvarna 545RX brush cutter starting but not accelerating


jcampbellsmith
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It is running too lean on the H screw, check the fuel filter in the tank for blockage, check the fuel hoses for signs of leaking, if all seems ok then a small turn out on the H screw, unfortunately you need a special tool as they are anti tamper screws.

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What fuel have you been putting in it and has it been standing..??

 

I bought a brand new husqvarna 522HD60X hedgetrimmer a few weeks ago that was much the same. Turns out that it was too RICH at idle. I would have imagined weak, but i noticed that right after starting it from cold it was fine, with the problems starting when it had warmed up a bit.

I turned the slow running screw in about just under 1/4 of a turn and perfect..

 

Had to order a special tool from husqvarna to do it.

 

All it has ever had in it is the proper husqvarna fuel..

 

john..

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43 minutes ago, jcampbellsmith said:

I've been using Aspen.

Thanks 

JCS 

Good! Have you TRIED adjusting the carb?? As i said, you could well find, as i did, that a mere 1/4 of a turn makes all the difference. You MUST ALWAYS start with the slow running one first. [Husqvarna are quite specific about this] I suspect you will find a slight adjustment of the slow running screw and it will be perfect. Give it a try!! [Oh, take a photo first, so you can put the adjustment back as it was if needed]

 

john..

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