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

Terrapin

Petty Officer 2nd Class
Joined
Jan 15, 2006
Messages
169
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

Fleet Admiral
Joined
Apr 8, 2014
Messages
8,179
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

Petty Officer 2nd Class
Joined
Jan 15, 2006
Messages
169
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.
 
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