1988 Mercury 9.9 design 1 or 2?

[dukboat]

Just a question, I need to order some parts for the lower unit on my 1988 9.9 merc ser# ob268183. How can I tell if its a design 1 or 2? The seals and bearing carrier are different between the design 1 and 2. Thanks

 

[carholme]

Re: 1988 Mercury 9.9 design 1 or 2?

Your s/n comes up as:

MERCURY - ( 9.9 H.P. (1988 ))
Serial No: 0B268183 Model No: 1010201BD

Parts Listing for model 1010201BD:

6 / 8 HP 9.9 / 15 HP - Mercury, Mercruiser, Force, etc. Parts Lookup

If you look under:

GEAR HSG (DRIVE SHAFT) DESIGN I
GEAR HSG (DRIVE SHAFT) DESIGN II

you should be able to see the difference in the water pump base.

Gerry

 

[dukboat]

Re: 1988 Mercury 9.9 design 1 or 2?

Thanks, I don't have the lower "down" yet I was waiting untill I got the parts

 

[dukboat]

Re: 1988 Mercury 9.9 design 1 or 2?

Got it, its a design 1. Why did they make two types of lowers?