2001-2005 Honda TRX250EX Sportrax TRX250EX Factory Service Manual, Page 169Get this manual
CRANKSHAFT ITRANSMISSION Apply engine oil to the following:gearshift fork and shaft sliding surfacesgearshift fork pawl pins and drum inner grooves "N6RR" MARKN6CMARKHN6FMARK
Assemble the gearshift forkshaft and gearshift drum Install the rear shift fork into the M3 shifter gear groove with itsN6RW mark facing upInstall the center shift fork into the C4 shifter gear groove with its "N6C mark facing upInstall the front shift fork into the counter shifter groove with itsHN6Fmark facing upMake sure all of the shift fork pawl pins are aligned with the grooves in the shift drumInstall the shift fork shaft