1986-1989 Honda TRX250 FourTrax 250R Service Manual, Page 74Get this manual
ALTERNATOR INSTALLATION Install new O-ring in the groove in the bearing holderApply transmission oil to the O-ri ng
Install the bearing holder onto the left crankcase and tighten the attaching bolts securely Install the alternator (page 6-3)Install the balancer (page 7-11)