Water Pump Kit P/N 394711 for 9.9 & 15 HP Johnson

[Terrapin]

This kit comes with an O-Ring (item 5) with an internal diameter of approximately 3/8". Where does this O-Ring go? I can't find it mentioned or on any parts diagram in my OEM Service Manual or the water pump kit instructions.

 

[flyingscott]

Depends on the year of the motor. On early 9.9/15 hp motors that went on the top of the drive shaft. Later models had 2 seals incorporated in the lower crankcase seal, So the o ring was no longer required. If it is required you will have a groove at the top of the shaft.

 

[Terrapin]

Depends on the year of the motor. On early 9.9/15 hp motors that went on the top of the drive shaft. Later models had 2 seals incorporated in the lower crankcase seal, So the o ring was no longer required. If it is required you will have a groove at the top of the shaft.

OK, thanks for the explanation. I don't have a groove around the top of my 1987 15 HP driveshaft. I just wanted to make sure I wasn't missing something on the assembly.