Husqvarna 359 bogs with throttle on start.

[J D]

Wouldn't be the first time a bit of varnish or gunk has been cleared by running a few tanks of fresh fuel through the carb.
I think the exhaust bolts are high tensile or something similar to accommodate the temperature variation... might find your hardware store bolts aren't the best option long term

 

[Gord404]

Kinda funny- muffler bolts for 372-390 etc are 3$ a piece from the dealer last time I bought them- found an automotive store that sell grade 8 bolts for 11 cent a piece- buy them by the 100 lot- usually bend the insert hole so they cant get lost when in and put the muffler back on and usually hit the inside of the muffler with air pionted away from me so I dont get it in the face to make sure there is no loose carbon of whatever before putting the muffler back on.

 

[stihltech]

UMM, I must respectfully disagree on the muffler not needed. At least on a stock saw. Have cured more that a few in the same way.

 

[Greebe]

All I know is the problem went away after putting in the new bolt.

Really? A missing bolt in the muffler was causing bogging issues?
Only way I can think of it possibly being the root cause was if both bolts were loose, one went missing and the gasket fell enough to cover a lot of the exhaust port- thus causing symptoms similar to a blocked with carbon spark arrestor screen.
Other than that- muffler does nothing really but lessen the noise- you can run a saw quite happily with the muffler off.

I suppose the gasket could have slid down, but I didn't think to check that when I removed the muffler to inspect it. The second muffler bolt was not crazy tight, so I guess that could be possible.

Wouldn't be the first time a bit of varnish or gunk has been cleared by running a few tanks of fresh fuel through the carb.
I think the exhaust bolts are high tensile or something similar to accommodate the temperature variation... might find your hardware store bolts aren't the best option long term

Don't think it was a varnish problem because the saw gets used regularly and only with non ethanol gas.

When I can get to a saw shop, I will get see about proper bolts.

UMM, I must respectfully disagree on the muffler not needed. At least on a stock saw. Have cured more that a few in the same way.

It did fix the saw the past few times I have run it. I could let the saw sit out in the cold longer and see if it does it again, but thinking it might not.

Good stuff. Thanks for the replies