69J1D11 4-1812345678915. Tighten the synchronizing screw 0 ofcylinder #4, and stop tightening when thethrottle plate starts to move. Similarly,tighten and adjust the synchronizingscrew A of cylinder #6.16. Tighten the port throttle stop screw 8until it contacts the throttle body lever 9,and then turn it one additional turn.17. Start the engine and warm it up for 5 min-utes.18. Remove the plugs E of cylinders #1, #3,and #5, and then attach the special ser-vice tool and adapters to the intake mani-fold as shown.NOTE:For best results, use a vacuum gauge (com-mercially obtainable), like F or G shown inthe illustration, that has four adapters.Carburetor synchronizer: YU-08030È#1#3#5S69J4310Throttle control
