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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26744
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I HAVE A KOLHER K301 SPEC47460 WIYH A 2 YEAR OLD WALBORO

Customer Question

I HAVE A KOLHER K301 SPEC47460 WIYH A 2 YEAR OLD WALBORO CARB. THE MOTOR STUMBLES SPUTTERS AND BAKFIRES UNDER LOAD
I REMOVED THE CARB DISASSEMBLED AND CLEANED IT
, THE NEEDLE VALVES LOOK GOOD. REINSALLEDIT AND AJUSTED TO THE SPEC. TRACTOR RUNS GOOD UNTIL YOU PUT ALOAD ON IT, SUCH AS GOING UP A STEEP HILL OR ADDING WEIGHT.
Submitted: 10 months ago.
Category: Small Engine
Expert:  Curtis B. replied 10 months ago.

May be starving for fuel from tank or filter! Needs more fuel for the horsepower requirement. Gravity feed or a pulse fule pump?