6 - 10FUELCARBURETOR8. Check:• free movement (piston valve)Sticks → Replace the piston valve guideand the piston valve.Insert the piston valve into the carburetorbody, and check for free movement.9. Check:• free movement (throttle valve)Sticks → Replace.ASSEMBLING THE CARBURETORNOTE:Before assembling the carburetor, make sureto turn out the pilot screw the same number oftimes, as noted before disassembly, from theseated position to the set position.CAUTION:Before assembling, wash all of the parts ina clean petroleum based solvent.1. Measure:• float height aOut of specification → Adjust. a. Hold the carburetor in an upside down posi-tion.b. Measure the distance from the front matingsurface of the float chamber (gasketremoved) to the top of the float.NOTE:The float arm should be resting on the needlevalve, but not compressing it.c. If the float height is not within the specifica-tion, check the valve seat and needle valve.d. If either is worn, replace them both.e. If both are fine, adjust the float height bybending the float tang 1 on the float.f. Recheck the float height. Float height (F.H.)13 mm (0.51 in)www.midwestmanuals.com
