Kohler 26hp twin surging at high throttle, okay at medium to 70% throttle

[jpilk99]

This may be helpful for you. I see they have the Command carb at the bottom which shows a model w/ an accelerator pump but hopefully similar enough to get the idea how it works. Typically a surge that goes away under load is considered a low speed circuit issue as Randy has pointed out. Consider too that intake gaskets and seals can play a part as well. https://outdoorpowerinfo.com/repairs/#id_kohler

I'm reading through the carb details re the Command carb - what a great write up. Part of me was planning to go back to my Original carb and make sure everything was clean and set correctly, (which I may do shortly), but it occurred to me that the new carb on there ---- maybe it just needs the idle fuel mixture adjusting screw adjusted.... Gonna try that and if no improvement, then go recondition original carb.

 

[tomplum]

You might find too that a Kawasaki carb looks closer to what you have. In any event, that site has put some real effort into how carburetors function. Admittedly I am not fan of jungle carbs. But, no one is a fan of much of the Kohler carb pricing. I mean some of these things are 450$

 

[jpilk99]

You might find too that a Kawasaki carb looks closer to what you have. In any event, that site has put some real effort into how carburetors function. Admittedly I am not fan of jungle carbs. But, no one is a fan of much of the Kohler carb pricing. I mean some of these things are 450$

Thank you, as always Tom. And the others that helped here. I went through and really cleaned the original carb, pirated a couple bits off the new, and now machine runs smooooooth!!! Thanks so much.