2005-2011 Honda FourTrax Foreman TRX500 FE/FPE/FM/FPM/TM Service Manual, Page 477Get this manual
ELECTRIC SHIFT PROGRAM (ESP; FE FPE model)- O-ring spacer
O-ring dowel pin reduction gears
Check the gear teeth for wear or damage
INSTALLATION
Thoroughly clean the gears and journalsApplyof specified grease 10 the gear journals (both sides of the upper and lower gears) and gear