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Discussion Starter · #1 ·
I bought a replacement carb for the Kaw FH721V on my ZT:
Partman Carburetor/Carb Kawasaki 15003-7080 Replaces 15003-7048 Fits FH721V Engine https://a.co/d/axPoP5h

It started right up after the swap but it does surge badly at all speeds under no load.
Are there mixture screws under the caps near the fuel bowl elbows?
Which ones?
Gas Font Machine Metal Auto part
 

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Discussion Starter · #5 ·
Let's say for the sake of argument that I agree that most Amazon-sourced Asian replacement parts for this Asian engine are junk.
Well I chose the one good replacement part & it needs adjustment. Runs a bit lean & will smooth out with some choke added.
The manual doesn't describe how to adjust for best performance--it only says to count turns into the seat. I feel that's a cop-out that'll only get you "in the ballpark".
 
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