1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 177Get this manual
'GE.ARSHIFT LINKAGE 'Insta ll the sub-gearsh ift spin.dle and, thrust washer to the rear crankcase
If reverse s;topper arm was remo, ed, it must be inv stalled before slJb-gearsh ift splnd le (page 9-8)
Insta ll the thrust washer onto the spindle
Insta,1I the return 9.prll ngwas.her and stopper arm Iinto the crankcase so that arm lies below b.e aring edgeInstall and tighten t!he stopper arm bolt
If the ret urn spring pln was removedapply locking agentto the threads and install it