2007 Yamaha Apex Factory Service Manual, Page 88Get this manual

2007 Yamaha Apex Factory Service Manual, Page 88

REAR SUSPENSION INSP ADJ S Turn the adjusting bolt to the desired position CAUTION: Be sure the adjusting bolt ends are set
system for the Full rate adjusterThe bolt has teeth on itSo when the bolt is turned, it rides up and down the bracketNOTE:
The nut has to be loosen first, while the bolt is held in place with wrenchS Then the bolt can be turned to adjust the shock