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Google Ai tells me the 1978 Mercury 70hp didn't have a Power Trim option. But I'm reading that it came on later models. . Does anyone know if there are newer models that have Power Tilt Trim that can be modified to work with a 1978? I know I can buy a CMC, but I was wondering if there are power...

Okay, yep, the boat has a speedometer. Thanks

The line going to it appears to be a small hose line.

I put one of the bolts back in hand tight so when I hit, it didn't go flying. Does things look good?

1978 Mercury 70hp I've been pulling on it, hitting it with a rubber mallet, and it's stuck good. I sprayed some PB Blaster around the outside to see if that might loosen it. . Any Tips for getting it off without breaking it?

My shopping for a new one I'm noticing they all have BLK/YEL where mine has ORN for Orange. . Mine might likely be a pretty old one. . Mercury switched from the solid orange (or salmon) kill/stop wire to the standard industry black/yellow stripe wire around 1978–1979, coinciding with the...

Yep, I'll be getting a new tilt tube and steering cable.

eBay wants $24 used. Boats.net wants $24 new. Hmm.... What should I do? 😊

Yep, I gave up. It was just way too corroded. The thing is still stuck solid in there.

Sorry, yes, I should have known that. It's similar to my Johnson 90 having the same ci as the 115.

I will be putting in a new impeller. I was only mentioning it's softness as possible evidence someone had been in there in the recent past. But yes, it needs replacing.

Also, I watched a video where a guy said this really is just a 50hp with carburetion and timing advanced (RPM) to get 70hp. . Interesting, Shop Manual shows the same Cubic Inch from 50hp to 70hp.

Yes, they are pretty scary looking. However, they are just really significant scrapes. Scraping of the metal itself. Fortunately they haven't deformed the housing itself. . I attempted a vacuum leak down test on the lower unit after work today. I couldn't get it to develop any vacuum resistance...

Done, I'll get back to you in 24 hours 😊

I see people post often to go with Sierra Marine because they have a "Lifetime Warranty". . Has anyone ever had to do a warranty return on their Sierra Marine part? . Sierra Marine says to return it to the seller, and the seller applies for the return authorization. . I can imagine how that...

The way the wires are crumbling as I remove them, including the wires coming from the stator, I plan on rebuilding the whole harness - all wiring - every wire and connection.

I'll get a picture tomorrow, but I've got it out about 2 inches so far, and it's really corroded - black rusty crap. I'll leave it be for now, but I'll be watching marketplace for a good used replacement.

Thanks, I bought a physical service/shop manual.

Yeah, I was only mentioning the impeller's softness for verification that someone had been in there not too long ago.

I'm reading the motor is actually only a little over 60hp at the prop. But yeah, I just took it off. It's a little light one. :) . It's on a 1978 15 foot Britton BeachCraft Trihull. . I think it being as light as it is - the whole motor being around 190, I think it'll be an advantage for me...