1988-1994 Honda TRX300 Fourtrax, 1988, 1990-1994 TRX300FW Fourtrax Service Manual, Page 152Get this manual
CRANKCASECRANKSHAFTTRANSMISSION Measure the 0.0of the reverse idler shaftSERVICE LIMIT: 13.93 mm (0.548 in) Calculate the bushing-to-reverse idler shaft clearanceSERVICE LIMIT: 0.10 mm (0.004 in)
Check the shift fork and shaft for wear or damageMeasure the 1.0of the shift forksSERVICE LIMIT: 13.04 mm (0.513 in) Measure the shift fork claw thickness as shownSERVICE LIMIT: 4.50 mm (0.177 in)