Crankshaft Splined Insert Lubrication
 

I just purchased a 2072 with 533 hours and am going through a complete maintenance on it. I found Service Bulletin 221 regarding lubricating the crankshaft splined insert and need some help understanding which end of the crankshaft they are referring to and any pointers from those who have done this service. Any other specific items needing attention are also appreciated. Thanks, Mike

The motor is the Kohler Magnum 20.