2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 286Get this manual
FRONT ARMS AND FRONT SHOCK ABSORBER ASSEMBLIES EBS00469
REMOVING THE FRONT ARMS 1Check: front arm free play
aCheck the front arm side play by moving it from side to sideIf side play is noticeable, check the bushingsbCheck the front arm vertical movement by moving it up and downIf the vertical movement is tight or rough, or if there is binding, check the bushingsLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM