Husqvarna 350 Won't Throttle Up

[wizardbrad]

Long time Lurker. Decided I'd give some info back. I was working on a 350 and it would only throttle halfway before giving up. It would idle great. So naturally you'd think adjust the high idle, change fuel line, clean carb etc. But before i did that, i decided to pull the wall partion, so i could change it to the new style. I found the nipple had melted? What would cause this, I'm not sure but I replaced and it works great now. I attached pics of both the new and old wall partitions.

 

[dave ensign]

Long time Lurker. Decided I'd give some info back. I was working on a 350 and it would only throttle halfway before giving up. It would idle great. So naturally you'd think adjust the high idle, change fuel line, clean carb etc. But before i did that, i decided to pull the wall partion, so i could change it to the new style. I found the nipple had melted? What would cause this, I'm not sure but I replaced and it works great now. I attached pics of both the new and old wall partitions.

When I upped my 353 to 346, I replaced the partition and new style clamp. The old one was still good.

 

[ChillyB]

Mine needs updated too. Assuming you had to pull the cylinder? Or did you find another way? Haven’t pulled one apart yet, and while I’m not afraid to do so I’d rather not upset a joint unless I absolutely must.

 

[wizardbrad]

Mine needs updated too. Assuming you had to pull the cylinder? Or did you find another way? Haven’t pulled one apart yet, and while I’m not afraid to do so I’d rather not upset a joint unless I absolutely must.

I went ahead and pulled the cylinder to see if it caused any damage to the piston (it did not). But to be honest you can probably just pull it off without pulling the cylinder.

 

[dave ensign]

No need to pull cylinder to change to metal clamp!

 

[wizardbrad]

No need to pull cylinder to change to metal clamp!

Thanks Dave! I didn't believe you needed to but again i pulled the cylinder because i was curious to see if there had been damage done to the piston. Luckily there had not been.

 

[dave ensign]

Wiz

Pulling the cylinder tells you the whole story but pulling the muffler usually shows enough.

 

[wizardbrad]

Ve

Wiz

Pulling the cylinder tells you the whole story but pulling the muffler usually shows enough.

Very true. Any guess to how that nipple got melted? I've never seen that on a plastic nipple.

 

[dave ensign]

I could only guess either a very hot day or enough debris on the flywheel shroud to restrict air flow. Might have been running lean.