OMC 4.3L Cobra engine schematics

[BoatingTimbo]

Is there anywhere online I can find engine schematics for OMC engines or does anyone by chance have pdf's of any OMC 4.3L engine diagrams?

 

[danond]

Re: OMC 4.3L Cobra engine schematics

Link to Factory Manual

 

[BoatingTimbo]

Re: OMC 4.3L Cobra engine schematics

Thanks so much. Nothing in there about the frost plugs. Recently had one replaced (on starboard side of eng.) and now another leak! this time coming from the rear of the engine. Is there a frost plug on the rear with this 4.3L engine?
If so, does the engine need to be removed to access that and replace the frost plug?

 

[BoatingTimbo]

Re: OMC 4.3L Cobra engine schematics

1. want manual and schematics for other problems i encounter almost daily with this OMC eng.
2. hoping schematics and the manual i was guided to online would point out frost plugs on the block.

if anyone's had to replace frost plugs in this eng. do you know if there is a frost plug located on the rear. No way to see without lifting the eng. out...

 

[BoatingTimbo]

Re: OMC 4.3L Cobra engine schematics

damn! ya, it's leaking down into the flywheel. It's an '89

so your saying there could be 2 on the rear of the block?