2006-2012 Honda TRX90 TRX90EX/X Service Manual, Page 148Get this manual
CLUTCHGEARSHIFT LINKAGE Align the spline washer groove with the mainshaft groove by turning the spline washerInstall the set ring by aligning it tabs with the grooves of the spline washer
Apply molybdenum disulfide oil to the clutch outer guideInstall the clutch outer guide onto the mainshaft and washer onto the crankshaft