1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 229Get this manual
CARBURETOR
ICARBI 'ill
e Measure the distance from the front mating surface of the float chamber (gasket removed) to the top of the floatNOTE: The float arm should be resting on the needle valve, but not compressing itelf the float height is not with in the specification, inspect the valve seat and needle valveelf either is worn, replace them bothelf both are fine, adjust the float height by bending the float tang D on the floate Recheck the float height