1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 87Get this manual
LUBRICATION SYSTE,M
INSTALLATiON
Ver,i fy the Cam cna ill slipper is insta lledInstall the oil pum assembly ali gni ng the pump drive shaft boss with th ,e groove in the ba lanc er shalt, align the si de plate tab with the cam chain slipper groove
Install and ti,ght1 tile oil pump mountjng boltsen Rec heck the il pump by turning the pump shaft right and left, Install he cent rifugal clutch !pa'g l0}Install he front crankcase cover (page lS)