1985-1987 Honda TRX 250 Fourtrax 250 Service Manual, Page 121Get this manual
CRANKCASECRANKSHAFTTRANSMISSION Remove the thrust washer and C1 gear from the countershaft Remove the thrust washer and reverse idler gear
Remove the C1 gear bushing, spline collar, C' {reverse shifter
and CR gear from the countershah Remove the reverse idler gear bushing and washer