I have a husqvarna 25cc brushcutter that when it gets hot it dies down and revs up, up, down etc.

Hi Joe, I have only just received your reply, as I went to bed 1/2 an hour after asking the question. Very shortly, I will be on my way to work. I had a quick look at the link about cleaning procedures, it looks very helpful. I will try and chase up some carby cleaner and fuel and air filters as you suggested. I might have one more challenge on my hands as I fiddled with the high and low mixture screws. Would you have any idea where a good start point should be? On my fathers old Mc Culloch it used to be 1turn from home for Low , 1 1/2 for High. Thank You for your time and advice, I'll see how I go tonight if I can get the parts. Thanks, Darryl. Hi Joe, I have only just received your reply, as I went to bed 1/2 an hour after asking the question. Very shortly, I will be on my way to work. I had a quick look at the link about cleaning procedures, it looks very helpful. I will try and chase up some carby cleaner and fuel and air filters as you suggested. I might have one more challenge on my hands as I fiddled with the high and low mixture screws. Would you have any idea where a good start point should be? On my fathers old Mc Culloch it used to be 1turn from home for Low , 1 1/2 for High. Thank You for your time and advice, I'll see how I go tonight if I can get the parts. Thanks, Darryl.

Hi, Thanks for responding, I have replaced the fuel and air filters, I could kick myself for not buying an new spark plug. I sprayed some carby cleaner inside the carby but could not get it to run as it did yesterday, I think it was only running on carby cleaner as it would stop soon after, my arm is tired from pulling, I found the owners manual in the back room and it says standard settings for High and Low both 1 - 1 1/4 turns , I may have gone a bit too far, I will try again tomorrow night now that I have the factory settings. I really don't want to pull the carby apart if I can help it. But we are looking at a 3 week turn around if I put in to the mower shop as we are in the middle of summer. thanks again! Hi, Thanks for responding, I have replaced the fuel and air filters, I could kick myself for not buying an new spark plug. I sprayed some carby cleaner inside the carby but could not get it to run as it did yesterday, I think it was only running on carby cleaner as it would stop soon after, my arm is tired from pulling, I found the owners manual in the back room and it says standard settings for High and Low both 1 - 1 1/4 turns , I may have gone a bit too far, I will try again tomorrow night now that I have the factory settings. I really don't want to pull the carby apart if I can help it. But we are looking at a 3 week turn around if I put in to the mower shop as we are in the middle of summer. thanks again!

Hi Joe, I have not fixed the brushcutter yet, but while attempting to remove the carburettor, I noticed that the fuel line was cracked, in fact it is totally shot. So it is a definite problem. Tomorrow, I will purchase some more hose and hopefully find time to fit it. I'll keep you posted! Thanks again! Hi Joe, I have not fixed the brushcutter yet, but while attempting to remove the carburettor, I noticed that the fuel line was cracked, in fact it is totally shot. So it is a definite problem. Tomorrow, I will purchase some more hose and hopefully find time to fit it. I'll keep you posted! Thanks again!

Hello Again, I pulled the carby off this afternoon and discovered that the fuel line had a very bad crack. I will try and purchase some new hose and fit it tomorrow. I will keep you posted. Thanks again for your advice! Darryl Hello Again, I pulled the carby off this afternoon and discovered that the fuel line had a very bad crack. I will try and purchase some new hose and fit it tomorrow. I will keep you posted. Thanks again for your advice! Darryl

Thank you for your help and advice, I think the broken fuel line may have been the problem! Darryl Thank you for your help and advice, I think the broken fuel line may have been the problem! Darryl