what in the hell is wrong with this ms361 please help!!!!

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windthrown

windthrown

361 Junkie
Joined
Sep 24, 2006
Messages
10,885
Location
The longbar PNW
its the older ms361 so no limiter caps on carb, carb is on good, muffler modded no screen(not new mod) impulse line is fine, the saw sat for 2 months before this just because i was so busy and i drained it but again doesnt mean the carb wasnt full of old fuel. probably going to have to wait more :( and buy a tach and clean it and retune it anybody know any good tachs?

All 361s had limiter caps from the factory. Someone must have removed them.

I use a DTI-20K Tech Tach, costs about $100 clams. They also make the Tiny Tach that is good for the same price.
 
pioneerguy600

pioneerguy600

Lost in Space
Staff member
Moderator
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Dec 23, 2007
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43,918
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N.S. Canada
alright answer fixed everyone carb was gunked up wit acouple small green deposits so safe to assume that was the problem, so until I get carb cleaner today I was looking at the carb itself and the intake plenum can anyone tell me what in the photo below circled is for in the air box itself there is barley any room for this hole to get air threw

That snorkel only allows atmospheric air pressure in to the carb metering diaphragm , a pinhole would allow enough air in to do what is needed or intended to do. Stihl referred to this option as an intella carb setup, supposedly designed to compensate for a dirty airfilter.
 
TimberTramp420

TimberTramp420

ArboristSite Member
Joined
Mar 10, 2014
Messages
50
it was a southern ohio logging saw the bottom of its seens its days in the woods but the previous owner took good care of the top side but the carb has zero markings ill post pics, but runs great and screams or at least did :( lol
 
windthrown

windthrown

361 Junkie
Joined
Sep 24, 2006
Messages
10,885
Location
The longbar PNW
Chainsawr has a used Walbro HD34B for $30.

This is what it looks like:

Walbro HD-34B.jpg
It should say Walbro on it. Sounds like you have a knock-off Chicom carb in there and it forked up for whatever reason. I see a lot of used Stihl saws around here with aftermarket Chicom crap on them. I see Chicom parts, I pass...
 
TimberTramp420

TimberTramp420

ArboristSite Member
Joined
Mar 10, 2014
Messages
50
Chainsawr has a used Walbro HD34B for $30.

This is what it looks like:

View attachment 404076
It should say Walbro on it. Sounds like you have a knock-off Chicom carb in there and it forked up for whatever reason. I see a lot of used Stihl saws around here with aftermarket Chicom crap on them. I see Chicom parts, I pass...

Got a link to that carb for $30 and how reliable is this source
 
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