1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 65Get this manual
MAINTENANCE Install the 011 filter spring to th rear crankcase cover, Install new oil fiterwith its uO UT-SIDE (TOWARDS FILTER COVER)" mark facingOlr!
CAUTION:
Installln.g the oil filte, backwards will result in se'Vee englrre damage
Make sure that the O-rings are in good conditi on and replace if nec,essaryApp ly oil to he -rings Install the oil filter cover and tighten the bolts to the spec ifi ed torque
TORQU:E: Nm (1 .0 kgf.mIbf.ft)
Check that the sealing washer on the drajn bo lt is in good condition, replace if Install and ighten he drain bolt