Husqvarna 545RX brush cutter starting but not accelerating

[jcampbellsmith]

I have a Husqvarna 545RX that starts and will idle, but when I apply the throttle, it dies. I'm based in Edinburgh and am looking for recommendations on where to take it to get this issue fixed. In all the time that I have had the brush cutter, it has always been slow to get going. 

Thanks

JCS

[adw]

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.

[spudulike]

Only other thing worth adding is to check the small gauze strainer in the carb but do the easy stuff ADW mentioned firstly. A new fuel filter and a carb retune may well do the job.

[jcampbellsmith]

Thanks, I've ordered up a new fuel filter.

Best regards

JCS

[jcampbellsmith]

If I need a carb retune, who in the Edinburgh area do you recommend?

Thanks

JCS

[adw]

Sorry I do not know the dealers in Edinburgh area, just Google Husqvarna dealers in Scotland there is a dealer locator on there.

[john87]

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..

[jcampbellsmith]

On 30/12/2021 at 22:17, john87 said:

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

I've been using Aspen.

Thanks 

JCS 

[Dean Lofthouse]

Try getting a carb kit and replacing this, sorry I don't know the name for it but it is a one way valve for the fuel, The "flappers" on it get worn and the machine displays the exact symptoms you are experiencing. I've changed loads and it's done the trick.

[john87]

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..