MS 171 issue

[bmp01]

Carbs on these have an accelerator circuit that turns to sh1t on well used examples....

[peatff]

I had MS180 (similar carb setup) that had similar problems and a carb kit plus raise the metering arm cured it. It was checked for air leaks etc and It seemed alright till you touched it against a log then it just died but after the fix it worked like new. Someone on here, billpierce probably, said you can get proper adjustable carb for it which would be a big improvement I think.

[bmp01]

5 hours ago, peatff said:

I had MS180 (similar carb setup) that had similar problems and a carb kit plus raise the metering arm cured it. It was checked for air leaks etc and It seemed alright till you touched it against a log then it just died but after the fix it worked like new. Someone on here, billpierce probably, said you can get proper adjustable carb for it which would be a big improvement I think.

The carb on the 170 / 180 is completely different to the 171 / 181 / 211. The latter are strato engines and their carbs have 2 ports through them, 1 fuel and air, 2 air only......

(They already have Hi and Lo fuel screws).

 

Edited March 2, 2019 by bmp01
Hi n Lo screw note