Possible 357 Problem

[Lillywhite Timber]

Hi , was using my 357 on Friday when it cut out . Seemed to be hot at the fill . Now it wont run properly . Im also hoping im wrong but seems to be low on compression . Its less than a year old from new and on its 4th chain to illustrate how much use it has got . Ive always run it at 40 to 1 husqvarnas own 2 stroke . But 1 used 45 to 1 Stihl mix on Friday . Theres a 13 inch bar on it and i always felt it was screaming .

Any insights ?

Thanks

[wisecobandit]

Was the carb retuned to run a 13" bar? If not it could well have been over revving.

Take the muffler off and have a look at the piston is my first suggestion.

[Stubby]

Hi , was using my 357 on Friday when it cut out . Seemed to be hot at the fill . Now it wont run properly . Im also hoping im wrong but seems to be low on compression . Its less than a year old from new and on its 4th chain to illustrate how much use it has got . Ive always run it at 40 to 1 husqvarnas own 2 stroke . But 1 used 45 to 1 Stihl mix on Friday . Theres a 13 inch bar on it and i always felt it was screaming .

Any insights ?

Thanks

 

If it was screaming there would have been an air leak somewhere . Fuel line , carb boot or other making it run lean and nipping up . . Old fuel can be a problem too .

[Chris Sheppard]

Does it have a manual decompressor or one of the auto ones?

[Arbkid93]

Ask chazzer

Edited April 20, 2014 by Arbkid93

[wisecobandit]

Its "a year old from new" so shouldn't have the auto decomp-only the very early models had that. Likewise highly unlikely crank seals either

[Stubby]

Its "a year old from new" so shouldn't have the auto decomp-only the very early models had that. Likewise highly unlikely crank seals either

 

I thought the very early models were blue button , then came the pants auto de comp , then they did away with it and went back to blue button .

[wisecobandit]

Auto decomps tended to be around the 01-03 saws ive always found. Never seen one on saws much later than that. Valid point tho as they would leak causing issues and simply a case of blocking off the tail on the front right of the saw underneath the exhaust (looks a bit like an impulse tail) and fitting the manual decomp in the barrel.

[Stubby]

Auto decomps tended to be around the 01-03 saws ive always found. Never seen one on saws much later than that. Valid point tho as they would leak causing issues and simply a case of blocking off the tail on the front right of the saw underneath the exhaust (looks a bit like an impulse tail) and fitting the manual decomp in the barrel.

 

Yep . I crimped one off and fitted a blue button once . Could not seem to get it started with auto de comp . Once I changed it it started no problem . I am sure early 357 never had it though .....

[wisecobandit]

When did the 357 come out? Im not really sure but know the 02 models had them as had 1 myself which I replaced with the blue button. Only got rid of it last year still on the original pot altho I did replace a piston on it.

Usually its actually the rubber pipe that splits between the tail and the decomp fitting in the barrel rather than the fitting itself ive always found.