How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Curtis B. Your Own Question
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13581
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
Type Your Small Engine Question Here...
Curtis B. is online now
A new question is answered every 9 seconds

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.
Expert:  JohnF2015 replied 1 year ago.

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