Originally Posted by curacing2

Stock carb? there are 2 carbs for the GXII the original 2 needle and the new version the 3 needle.

for the 2 needle never run the lsn leaner than flush or you will starve the motor of fuel at idle, hsn seem ok at 1 turn in if the motor is run-in

for the 3 needle the lsn needs to be about 3/4 of a turn out from flush, hsn can be 1 and a 1/2 turns plus in...the msn should be flush and at the factory setting so the intake hole lines up with the fuel comming in from the hsn.

your idle gap seems ok, a good way to test the lsn and idle gap is the fuelline pinch test, the revs should go up at around 3-4 seconds and not too high (too wide idle gap) before it dies, if it dies straight away your lsn is too lean still.

plus make sure all the exhaust gaskets, fuel tank seal and line are ok so you get decent fuel pressure in the tank.










Craig