I have a Stihl FS250R that will not start and for the life of me I am truly puzzled as I have rebuilt many 2 stokes but just can’t find the no start reason on this one. Any suggestions will be appreciated!
I have performed or checked the following:
Has great compression (~120psi). Carburetor is good, also installed it on another machine and it performed well. Carburetor mount is in good shape, no cracks and gaskets are good. Fuel lines and fuel filter are good. Ignition module (coil) is good, also installed it on another machine and it performed well. Air cap is correct on coil. Has spark at the spark plug so kill switch etc. are ok. Spark plug is good. Flywheel key is in tack so timing is correct. Muffler and spark arrestor are clear.
If I manually give it a shot of gas into the carburetor it will fire (not strongly though) but has the symptom of starving for gas or even a badly clogged spark arrestor.
I’m at a loss on this machine. Any suggestions? I would like to get this work horse back to running.
I look forward to you thoughts and suggestions.
I have performed or checked the following:
Has great compression (~120psi). Carburetor is good, also installed it on another machine and it performed well. Carburetor mount is in good shape, no cracks and gaskets are good. Fuel lines and fuel filter are good. Ignition module (coil) is good, also installed it on another machine and it performed well. Air cap is correct on coil. Has spark at the spark plug so kill switch etc. are ok. Spark plug is good. Flywheel key is in tack so timing is correct. Muffler and spark arrestor are clear.
If I manually give it a shot of gas into the carburetor it will fire (not strongly though) but has the symptom of starving for gas or even a badly clogged spark arrestor.
I’m at a loss on this machine. Any suggestions? I would like to get this work horse back to running.
I look forward to you thoughts and suggestions.