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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28917
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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My zd21 starts and runs good for about 20 minutes then Boggs

Customer Question

My zd21 starts and runs good for about 20 minutes then Boggs down to a very low idle.
Turn off mower and slowly will come up to a faster idle.
The second fuel filter is below half full.
Recently replaced both fuel filters. Not the metal filter (? Fuel pump) between the two filters.
Any idea what is causing this bogg down?
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.

Can you hear the fuel pump running? Is it running when the tractor bogs down? If the filters are not showing to be full of fuel, either the fuel pump is quitting or the hose coming from the tank is restricted. Sounds to be a supply problem.