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 John Oliver Your Own Question
John Oliver
John Oliver,
Category: Small Engine
Satisfied Customers: 201
Experience:  manager at White Eagle Ag and Truck Services
Type Your Small Engine Question Here...
John Oliver is online now
A new question is answered every 9 seconds

I have a kolher k301 spec 47460. starts ok run ok until you

Customer Question

I have a kolher k301 spec 47460. starts ok run ok until you put a load on it, such as going up a steep grade or pulling a load, then it stumbles, sputters and sometimes backfires.
I removed the carb. disassembled it cleaned and readjust it, cleaned the in tank filter, and added an in line filter. still has the problem. any ideas
Joe(###) ###-####
Submitted: 1 year ago.
Category: Small Engine
Expert:  John Oliver replied 1 year ago.

good afternoon my name is ***** ***** ill see what I can do to help. Sounds like you have covered the basics and that's a great first step. Its still possible to have a bad carb even though you took apart and cleaned it. This new ethanol fuel is very hard on these small engines. Have you gone threw the adjustments on the carb itself? the main jet could be starving for fuel.

this link is the operators manual for this engine and on page 12 it describes the adjustment procedure. Have a read on that and let me know which way you want to head to next


Customer: replied 1 year ago.
I have adjusted the Walbro carb according the directions
Expert:  John Oliver replied 1 year ago.

have you done anything with the ignition system? such as swapping out the spark plug or coil wire?

Customer: replied 1 year ago.
new plug not the coil wire
Expert:  John Oliver replied 1 year ago.

a new coil wire wouldn't hurt (hard to determine if electrical components are breaking down vs. fuel issues)

what I would do next is get some additive for the gas (sea foam or K100) and try running that threw the system.

new points and condenser wouldn't hurt anything either. there are inexpensive and need replacing from time to time

Customer: replied 1 year ago.
I'll try it