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MS201 sounding choked?


Al Cormack
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My pre electronic 201 sounds like it is being choked when cutting through larger branches. Revs up freely, but starts dying when cutting through larger diameter branches. I have to back off, build the revs and go again.

 

Any ideas what this might be? Thinking I probably need to remove carb and blow it out?

 

Cheers...Al

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Worth checking the colour of the spark plug - if it is black then the saw is running rich and may need leaning off, if it is white then it is running lean. It may be a bit of fine saw dust in the carb strainer. Most likely carb related but worth either cleaning or trying a new plug.

The early 201s were dire and have lost count on the ones I have modified!

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2 hours ago, spudulike said:

Worth checking the colour of the spark plug - if it is black then the saw is running rich and may need leaning off, if it is white then it is running lean. It may be a bit of fine saw dust in the carb strainer. Most likely carb related but worth either cleaning or trying a new plug.

The early 201s were dire and have lost count on the ones I have modified!

I'll check these out. Cheers Spud!

Its a 2012 saw, and been fine until the last week or so. Not felt it was underpowered like others have been.

 

Cheers...Al

 

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3 hours ago, billpierce said:

not had a 201 to bits but might be 1145 141 8600

 

its thew hose that runs from the cylinder to your carb that  isnt the big fat carb boot, but the sometimes connect to carb boot.

 

 

Ok, cheers. the pipe above had a hole in it, and goes to the tank breather. Not sure if that would have affected the running or not?

I'll check the other pipe out as you mentioned as well.

 

Cheers.

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