Finally found the cause of my 2000 kodiak stalling and not getting fuel, especially under load, wait for awhile and it would restart. First thought it was excess engine heat so back flushed the radiator, changed the thermostat, and replaced the temperature sensor. This even though part of good maintenance this did not fix the problem. I replaced the fuel line and the fuel shut off and all of the fuel line clamps and still had the problem. After replacing the shut off I took it the old one apart and found part of the inner seal was missing which led me to believe it had to be in the line or at the needle valve since there is no filter between the carb and the shut off discharge to the carb. Took the carb off again and found the small peice of the seal at the input to the needle valve. Cleaned everything up and it is now running great

BAyou.419
2008 Grizzly 350
2000 Kodiak 400
2 2006 Kawasaki Bayou's

 

glad you found it. thanks for sharing the info!