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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26029
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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21xxxx series 13.5 hp is hunting at all rpm and load can you

Customer Question

21xxxx series 13.5 hp is hunting at all rpm and load can you suggest a fix?
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: Have just purchased second hand ride on with said engine so no idea how long engine has had problem
JA: Can you guesstimate how old the engine is? And has it done anything like this in the past?
Customer: Mower is 2010 engine according to head stamp is 08
JA: Do you plan on doing the work yourself?
Customer: Yes I am a diesel fitter
JA: Anything else we should know to help you best?
Customer: Don't think so all seems ok just hunting problem
Submitted: 7 days ago.
Category: Small Engine
Expert:  Curtis B. replied 7 days ago.

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Customer: replied 7 days ago.
Have hunting issue on a 21 xxxx series 13.5 hp
Expert:  Curtis B. replied 7 days ago.

Hunting can be caused by a lack of fuel to the carburetor, or it can be carburetor that needs to be cleaned. I think this is the single cylinder engine, so it is not a miss-firing cylinder. Either fuel stravation, or the governor springs at the carburetor need to be tightened just enough to take any slack out of the springs. Do you have the full model number>

Customer: replied 7 days ago.
Expert:  Curtis B. replied 7 days ago.

The valves should also be checked for clearance. .004 to 006 inch. Here is carb for engine.

Customer: replied 7 days ago.
Valves are ok engine has very low hours I believe that it is a fuel delivery problem but do not have schematics for carb. Is the link you just gave me a schematic for said carby
Expert:  Curtis B. replied 7 days ago.

It was r & r, here is the disassembly

Customer: replied 7 days ago.
Ok thanks will go from here
Expert:  Curtis B. replied 7 days ago.


Expert:  Curtis B. replied 4 days ago.

Please rate to close and get me credit! Thanks.

Expert:  Curtis B. replied 4 hours ago.

I see question is still open.??