1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 102Get this manual
IDLING SPEED ADJUSTMENT THROTTLE LEVER FREE PLAY ADJUSTMENT4.Adjust: Engine idling speed
II:gS I(0) I
Adjustment steps: Turn in the pilot screw CD until it is lightly seated Turn out the pilot screw for the specified number of turnsPilot screw (turns out): 312 .Turn the throttle stop screw in or out until the specified idling speed is obtainedTurn in Turn out Idling speed becomes higherIdling speed becomes lower