1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 84Get this manual
LUBRICATION SYSTEM Route and nsta ll the breather ub prop erly and
secure it with the clam p
Connect theooling fan motor con nectors and secu re the wire with the clamps nsta II the removed pa rts in the reverse order of remova l
OIL PUMP
REMOVALIDISASSEMBLY
Remove the from crankcase cover (page 3)Remove the ce ntrifugal dutch (page 84)Remove' the dowel pin and O-ring if it is stil in the old pu mpRem ove the three bolts and oi pump assemb ly