1989 Honda FL400R Pilot Service Manual, Page 184Get this manual
REAR WHEELSUSPENSIONDRIVE SHAFT Apply grease to the bearing and inside of the inboard jointInstall the inboard joint to the drive shaftInstall the stop ring in the joint groove
Pack the boots with grease and pull them on the jointsGREASE CAPACITY: Inboard boot: 90-110 grams (3.2-3.9 oz) Outboard boot: 75-95 grams (2.6-3.4 oz)
Adjust the length of the drive shaft to the figure given belowDRIVE SHAFT LENGTH: 452-462 mm (17.8-18.2 in)