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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 12650
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I am working on a rer 1000 with a 420 craftsman engine. My

Customer Question

I am working on a rer 1000 with a 420 craftsman engine. My problem is that it is hard to start and once it is running it surges terribly on high throttle. I cleaned the carb and found it to be exceptionally clean. At low throttle it runs fine. I have changed the fuel filter and spark plug, all with no change in engine performance. Any suggestions?
Submitted: 1 year ago.
Category: Small Engine
Expert:  JohnF2015 replied 1 year ago.

Hi, my name is***** will be assisting you.

Can you provide the model information from the engine so that I can better assist you? My thought is that there is a partial blockage in the main jet of the carburetor. Did you remove the main jet and make certain that it was thoroughly cleaned?

Customer: replied 1 year ago.
Absolutely
Expert:  JohnF2015 replied 1 year ago.

What is the model number of the engine that you have on this machine?