Travis_Smith

UPDATE: took the carb out let it fill with fuel and found it was barely filling with fuel, maybe a quarter of the way. Adjusted the float and the bowl is now filling to the top... however in a purely coincidental action while testing and getting much of the same problem i had turned the handle bars while revving up and it throttled right up to wide open.... so no its down the electrical rabbit hole

This atv was a project when i bought it, it seemed to run fine but becuase the driveshaft joints needed replacing i was not able to really test the performance. The carb is brand new, the other one was also a repacement but it was missing screws and with all the trouble i decided to just replace it, but clearly that didnt help... Ill try your suggestions and see how it goes and report back.

It seems to me that the fuel/air mixture screw is working but it does seem to have its limit of effectiveness... i can screw it all the way in and the last 1/4 turn causes it to rev just a little... i have used the idle screw to hold the throttle open just to point it starts to sputter and then adjust the F/A screw but it doesn't seem really help it... it just seems to stay too rich... it starts right up, but when it's cold and you give it throttle, it will just die... when it warms up and you rev it-it seems ok till you put it in gear and it starts acting up and then continues whether in gear or not... you can get about 1/4 throttle before it starts acting up and you cant throttle past it, just sputters but wont die.

thanks for confirming that; I have it adjusted correctly, then. I cant get the screw loose on the bowl and i don't want to strip the screw so i cant really test the float level... I have also tried setting the fuel-air screw to no avail... i replaced the spark plug and cleaned the air filter... its a brand new carb so no clogged jets. new petcock also... is the timing adjustable?

I have a 2002 Kawasaki Prairie KVF 400 and im trying to figure out the actual float height... i have read 17mm +- 2mm, seen 13mm and 23mm... what is happening is it will start right up, rev a little and all is fine, when it warms and you put a load on it bogs down and sputters. no i don't have a manual