1977 OMC STERNDRIVE IMPELLER

[Supt C]

In order to replace impeller in OMC sterndrive, do you have to separate upper and lower gear cases? What gaskets are needed if this is what has to happen? Is there a way to test it without disassembling? Looking at manual looks as though impeller is located in between upper and lower. Any special tools needed? Thanks!!

 

[jester31]

The upper back plastic cover of the drive is removable, and the water pump is right behind there, easy peasy!

 

[Redrig]

The upper back plastic cover of the drive is removable, and the water pump is right behind there, easy peasy!

On a Stringer ? no , you have to seperate the upper and the lower .

To the OP yours is an electric shift , which is quite easy to remove anyways , just remember to unhook the shift wires before you drop the drive . No special tools needed , but an extra helper to help hold the drive can come in handy

the impeller is right at at the bottom of the upper unit.

 

[jester31]

If it's a Stringer? check here:
http://forums.iboats.com/forum/engi...c-stringer-impeller-replacement-pics?t=378358

 

[Supt C]

Before separating the upper from the lower gear case to replace the impeller, do I need to drain the lube from the drive?

 

[southkogs]

Before separating the upper from the lower gear case to replace the impeller, do I need to drain the lube from the drive?

You don't have to. Though, IMHO it's a great time to service the lube (you need Type C in the lower).

 

[Supt C]

Two(2) barrel Holley carb needs to be rebuilt. Where can I get carb rebuild kit? List #7036. Electric choke. Accelerator pump is shot. Would it be better to purchase remanufactured, instead of rebuilding? .

 

[southkogs]

I've never messed much with my carb. Some parts available HERE, but I would say just use the automotive stuff. Flame arrestor is the only thing "marine" that I can think of - someone else may correct me on that. On a carb, I'd say start by doing some maintenance and rebuild.