1987-2003 Yamaha YFZ350 Banshee supplementary service manual, Page 70Get this manual
CARBURETOR SYNCHRONIZATION1 IDLE SPEED ADJUSTMENT 7Check: Alignment marks (T) On the throttle valveNot aligned-Adjust the throttle cableThrottle cable adjustment steps: Snap the throttle lever few timesOpen the throttle lever until the alignment mark appears in the center of the window (D of the right carburetorWhile keeping the throttle lever at this position, check the left carburetor window for the presence of the alignment mark at the same positionIf not, adjust the throttle cable for the left carburetorLoosen the locknut Turn the adjuster (3) in or out until the alignment mark comes to the same positionTighten the locknutFinally check that both alignment marks appear at the same position at the same timeIf not, repeat the above steps