Stihl 201t idling problem

[AWarb00]

My 201t is playing up at the moment, starts fine , but won't idle for very long 

Iv tried turning the L screw back , and nothing seems to change, tried turning it forward , nothing either .

Almost sounds like it's running out of fuel but the tank is full

 

And when warm it only likes to start on half choke 

 

Any ideas? 

[spudulike]

Sounds like it isn't getting enough fuel. Do the easy stuff first - carb gauze strainer is the most likely issue - if it is filled with wood-chip, drain and check the fuel tank  as well as cleaning the strainer.

Other than that, it may be an air leak or split fuel line.

 

[Max 201]

Could be a clogged fuel filter, tank vent, or as stated above. Follow the path of the fuel to see if you can find any irregularities/blockages. 

[Essex]

I had similar problems with my 201. Not Mtronic version. Took it to a recommended dealer to get the problem sorted. They fitted a new carb, ignition module and fly wheel. Parts were subsided by stihl because they knew there was a problem with the original parts. Had the work done aroundb 2018. Saw was probably 2016 ish. Still dicks about a bit now. Doesn’t like to idle until it’s hot but even then it’s not great

[spudulike]

If you check what I said and it is still no good, try the accelerator pump, it may be that but do the easy stuff first.

Make sure the black plastic support ring is still on the manifold side of the carb. People lose them and can't be bothered to replace them!

[AWarb00]

I'm suspecting this may be the issue , new part on order.

Hoping this solves the issue ! 

 

Thanks for the replies 

 

 

 

[spudulike]

It looks like it!