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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26054
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I have a 42cc craftsman chain saw it would start but would

Customer Question

i have a 42cc craftsman chain saw it would start but would bog and die so i replaced fuel line,s carberator/coil/fly wheel thinking this would take care of the problem but it,s still doing it i don,t know of any thing else that could be causing it to act this way
Submitted: 6 months ago.
Category: Small Engine
Expert:  Curtis B. replied 6 months ago.

Fuel hoses hooked up correctly? Any air in primer when pumping? have you tried to adjust the high speed screw on carb?

Expert:  Curtis B. replied 6 months ago.

Did you see my response.

Customer: replied 6 months ago.
i'm getting air from some place. I can see it in the gas line. I replaced the primer button and all fuel lines.
Expert:  Curtis B. replied 6 months ago.

Air can be sucked in through the carburetor gaskets. Is carburetor tight ?

Customer: replied 6 months ago.
Carburetor is tight. Got new carburetor from sears but, didn't get a gasket with it. they called it a carburetor kit.
Expert:  Curtis B. replied 6 months ago.

Did you get primer sucking fuel through the carburetor? Not reversed at carb connections? Swap the hoses at carb and try it.

Customer: replied 6 months ago.
Line's hooked up right according to your diagram with primer hooked up I see air in the lines. Accelerate bog's. By pass primer. No air in line's but accelerate still bogs. Carburetor?
Expert:  Curtis B. replied 6 months ago.

Line with strainer in bottom of tank,

Customer: replied 6 months ago.
Expert:  Curtis B. replied 6 months ago.

adjust the high speed screw? use a straw or rubber hose over the screws if not regular screws .