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Ranwell1
Ranwell1, Small Engine Technician
Category: Small Engine
Satisfied Customers: 10304
Experience:  I Own a Lawn Mower Sales and service business (37years). Have 2-cycle and 4-cycle certification.
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I have a 2012 stihl Fs40 but do not have the HL screws?

Customer Question

Hello, I have a 2012 stihl Fs40 but do not have the HL screws? As the things refuses to idle.
Submitted: 2 years ago.
Category: Small Engine
Expert:  Ranwell1 replied 2 years ago.
There are non-adjustable carburetors.
The carburetor is most likely dirty and will need to be cleaned and rebuilt with new diaphragms and needle and seat. It is most likely that the idle passages are clogged.
Customer: replied 2 years ago.

I'll have a look an let you know the out come..

Expert:  Ranwell1 replied 2 years ago.
OK, Good luck.
Expert:  Ranwell1 replied 2 years ago.
Please give me a good rating and let me know if there is anything else I can do for you.