2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 75Get this manual

2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 75

CARBURETOR TUNING INSP ADJ A Standard main jet Main jet whose diameter is 10 smaller than standard Main jet whose diameter
that low speed tuning can be done by adjusting the pilot screw and throttle stop screw 2 CAUTION: Never run the engine without
the air filter case installedSevere engine damage may result1Tighten the pilot screw until it is lightly seated and then
back it out the specified number of turnsPilot screw 1: turns out Number of return rotation of pilot screw may vary depending
on each cylinderMake sure to rotate the screw backward after listing its present number of return rotation on each cylinderPilot
screw effects: Turn in STD setting Turn out Richer Mixture Leaner Mixture 2Set the engine idle speed by turning the throttle