How do I adjust the floats on the later SUs with the hinged floats?
Adjustment of the hinged floats can really cause problems if not done properly. Remove the float bowl covers, clean the float bowls, remove old sediment, check and then adjust the float setting if neccessary. You can do this by turning the cover upside down and with a 1/8″ drill bit. Set the drill bit accross the cover. The float tab should just touch the bit. Do not apply force to the float, just let it rest on its own weight. Ensure the needle is moving and seating properly. Reinstall the cover. This should get you real close to optimal setting. Make any adjustments to your idle mixture by turning the very bottom thumb screws counter clockwise to richen and clockwise to lean. You can then check the settings by disconnecting the coil wire, removing the pistons. Crank the engine over several times to get the fuel flowing. Peer down into the jets and the fuel level should be just below the top of the jets and very close to equal.
