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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28668
Experience:  Service manager and technician for all brands of engines with 40 + years of experience.
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The engine on my lawn mower will only run when you take the

Customer Question

The engine on my lawn mower will only run when you take the air filter off and hold your hand over the intake so that it sucks petrol up. Can you help

Submitted: 2 years ago.
Category: Small Engine
Expert:  Curtis B. replied 2 years ago.
Your main jet in the carburetor is plugged. It is the bowl bolt and the tube it screws into, these two parts make the main jet. Take the bowl off, and use a wire to clean the small ports in the screw and the center tube, and use a spray carburetor cleaner to wash them out. By holding your hand over the intake, your hand is acting as the choke,which by passes the main jet.