Kohler surging at lower throttle

[Jdershimer]

Replaced my Kohler carburetor because the original was leaking gas got a replacement off of Amazon installed it, engine runs fine in the high throttle indent, but it lower RPMs it surges and wants to shut off

 

[wh cc guy]

Welcome. Try turning the adjustment screws.

 

[-CӞ]

while getting by with the Amazon carb,
rebuild (or even just refurbish/clean real well) the OEM carb (assuming it is) and later go back to that.
they’re often still better than modern knockoffs.
good luck!

 

[spndncash]

is the float set correctly and do you have air leaks between the carb and engine? Chris is right though the chinses amazon carbs are terrible.

 

[Jdershimer]

Welcome. Try turning the adjustment screws.

Yep, tried that, gonna clean and reinstall own carb

 

[fhiggenbottom]

Low-cost carburetor rebuild kits are readily available on Amazon and are usually priced at less than $10. A rebuild is a fairly simple process usually requiring less than an hour without expensive, specialized tools and there are many tutorials for how to do a rebuild on YouTube. Just disassembling and cleaning has its problems and if not careful (in spite of everything you do to prevent it) it could result in a torn bowl gasket or leaking bowl nut gasket as the result of old and dried-up gaskets. If that happens during disassembly the carburetor will require installation of new gaskets which are included in a rebuild kit. But if you still prefer to try first just cleaning and reinstalling your OEM carburetor and that doesn't stop your leak problem a simple in line fuel cut off valve usually available on Amazon for less than $5 will solve your leak problem.

I gave up on Chinese knockoffs after multiple attempts to use them failed and decided to rebuild my OEM gravity fed Walbro carburetors which immediately solved my problems of fuel leaking and the engine not idling properly no matter how many adjustments were made to the carburetor jets. The rebuilds were simple, quick and relatively inexpensive and allowed my Kohler 12.5 vertical shaft engines to once again run as designed with NO FUEL LEAKS. But just to be sure they don't leak again I installed an inline fuel shutoff switch for each of them which allows me to sleep comfortably at night without the worry of a late-night fuel leak and possible fire while my riding mowers are parked in the garage.

 

[eweiss]

Goerner linkage?

 

[tkhoffman]

Replaced my Kohler carburetor because the original was leaking gas got a replacement off of Amazon installed it, engine runs fine in the high throttle indent, but it lower RPMs it surges and wants to shut off

Are you sure you put the governor linkage in the correct hole? Many carbs have multiple holes on that butterfly plate.

 

[Jdershimer]

Low-cost carburetor rebuild kits are readily available on Amazon and are usually priced at less than $10. A rebuild is a fairly simple process usually requiring less than an hour without expensive, specialized tools and there are many tutorials for how to do a rebuild on YouTube. Just disassembling and cleaning has its problems and if not careful (in spite of everything you do to prevent it) it could result in a torn bowl gasket or leaking bowl nut gasket as the result of old and dried-up gaskets. If that happens during disassembly the carburetor will require installation of new gaskets which are included in a rebuild kit. But if you still prefer to try first just cleaning and reinstalling your OEM carburetor and that doesn't stop your leak problem a simple in line fuel cut off valve usually available on Amazon for less than $5 will solve your leak problem.

I gave up on Chinese knockoffs after multiple attempts to use them failed and decided to rebuild my OEM gravity fed Walbro carburetors which immediately solved my problems of fuel leaking and the engine not idling properly no matter how many adjustments were made to the carburetor jets. The rebuilds were simple, quick and relatively inexpensive and allowed my Kohler 12.5 vertical shaft engines to once again run as designed with NO FUEL LEAKS. But just to be sure they don't leak again I installed an inline fuel shutoff switch for each of them which allows me to sleep comfortably at night without the worry of a late-night fuel leak and possible fire while my riding mowers are parked in the garage.

Thank you, I’m gonna do the exact same thing and I have already installed the valve, appreciate your advice

 

[mgonitzke]

Just so we can make sure we're providing advice that's applicable, what model tractor are you working on?

 

[jdrong]

I have had good luck with aftermarket carbs. I bought one for my 149 CC, read the reviews, did a minimal amount of internet research, and bought a probably Chinese rip off. Took a little time to get it adjusted but I haven't touched it for years now. One of the big reasons for not rebuilding my old carb was that it was just plain worn out. The throttle shaft was wore and the holes for it would have required bushings to fix the vacuum leak that was making it almost nonadjustable, plus the slop in the throttle shaft caused it to wiggle back and forth while running. I have had fuel leaks in the past with the old oem carb but, shutting off the fuel valve fixed that. Walking into my garage with a puddle gas on the floor and gas fumes prompted me into that good habit. If you have an older CC your oem carb likely needs more than a quick cleaning and new gaskets. Surging may not necessarily mean you need carb adjustment, rebuild, or replacement, as already mentioned the governor and its linkage may contribute to that condition. And yes I agree with mgonitzke, the tractor model would be very helpful to know. No one knows if your asking about an original CC or a ztr big box store model.

 

[R Mass1]

Taking a shot here. Don't know if its OK to post this or not, but I am going to be selling my 1973 International Cub Cadet 149 this Spring. I have owned it 30 years+. I have used it, taken care of it, normal maintenance, and mostly kept it inside out of the weather. It has tractor tires and wheel weights but will need front tires soon (worn). The 44" deck/blades are in very good shape. It runs just about as well now as it did 30 years ago. I paid over $1100 for around 1993 or so which is equivalent to around $2200 or so today. I would like to know if anyone has a reasonable idea as to what I should ask for it. If anyone is in the Upstate of SC and seriously interested, let me know. I don't intend to give it away. Thanks for any inputs.

 

[-CӞ]

Taking a shot here. Don't know if its OK to post this or not, but I am going to be selling my 1973 International Cub Cadet 149 this Spring. I have owned it 30 years+. I have used it, taken care of it, normal maintenance, and mostly kept it inside out of the weather. It has tractor tires and wheel weights but will need front tires soon (worn). The 44" deck/blades are in very good shape. It runs just about as well now as it did 30 years ago. I paid over $1100 for around 1993 or so which is equivalent to around $2200 or so today. I would like to know if anyone has a reasonable idea as to what I should ask for it. If anyone is in the Upstate of SC and seriously interested, let me know. I don't intend to give it away. Thanks for any inputs.

probably best to start a new thread in the classifieds section:
iHcubcadet.com/forums/ih-cub-cadet-classifieds-for-sale-wanted