1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 70Get this manual
I DRIVE CHAIN SLACK ADJUSTMENT
Drive chain slack adjustment: 1Adjust: Drive chain slack
Drive chain slack adjustment steps: Loosen the rear wheel hub upper bolts CD Loosen the rear wheel hub lower bolts Loosen the adjuster locknut Adjust chain slack by turning the adjuster
.To tighten Turn adjuster clockwise
To loosen Turn adjuster counter clockwise and push wheel forward