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Older OMC Outdrive ?'s

3 posts in this topic

Alright a couple of questions on the "new" boat.

Does anywhere sell new props for the older (my boat is a 75') OMC outdrive or am I limited to scouring online auctions and Marine dealerships?

The shaft seal on the power trim gearbox is gone. Are these difficult to replace?

Do you need to run the special OMC gear lube for OMC electric shift lower units or will a good quality aftermarket lower unit lube work?

Does anyone know what the recommended WOT RPM is for a marine 351W-235 hp?



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For the prop try

The seal? Are you talking about the tilt quadrant on the outside of the boat that raises and lowers the outdrive? That is not a power trim unit and that outdrive MUST ALWAYS BE RUN IN THE FULL DOWN POSITION. If that is the seal you are taliking about, it's not too hard to replace. You remove the tilt gear and lift the drive up and secure it. remove the tilt clutch housing cover to access the seal.

You must use OMC's Premium Blend gear lube. This is not to be confused with any other "premium blend" gear lube such as Quicksilver Premium Blend gear lube. OMC specifies their Premium Blend oil as it is special for electric shift gear cases.

WOT throttle range for the ford v-8's is 3800-4200 rpm.

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Thanks that clears things up. I've never owned a boat with an OMC outdrive before last week.

Yup I'm referring to the tilt on the left side of the boat with the gear drive. I'll check BRP to see if they stock any parts.


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