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Author Topic:   Yamaha on '69 hull
Chesapeake posted 01-08-2001 12:52 PM ET (US)   Profile for Chesapeake   Send Email to Chesapeake  
I have a '69 hull that I have been slowly restoring over the past 3 years. Just received word that the C-90 (2001) which I ordered is in. With a little more dash work (restored and awl-gripped the original mahogany console and am replacing the helm and all wiring) I will have it in to the dealer for installation. Unfortunately, it will be months before she can get in for a test run here in Chicago.

My installing dealer is not a whaler dealer. Does anyone have any special recommendations or things to watch out for when they mount the Yamaha on a classic whaler.

Sure would appreciate any advice.

JimU posted 01-10-2001 06:46 PM ET (US)     Profile for JimU  Send Email to JimU     
I just finished installing a new c-90 Yam on my 1971 16-7 Whaler. You will run into a slight problem with the lower mounting holes. The uppermost lower hole in the mounting bracket is below the bottom of the splashwell on the transom. You have two options: 1. Angle the bolt hole up severely to clear the splash well. 2. Bore a new hole through each side of the mounting bracket that will clear the bottom of the splash well. If you choose option 2 as I did you will still have to angle the hole up slightly. Some folks on this forum suggest raising the motor to the second hole; however doing so will pull the engine up more than the Yamaha manual recommends. You can make the holes with a 3/8 hand held electric drill. I mounted the engine and bolted up the top bolts, then I bored quarter inch pilot holes through the bracket and the transom simultaneously. Once I had the pilot holes drilled, I followed them with a 1/2 inch bit for the mounting bolts. It worked like a charm. It was a two-beer job. Cheers. JIM U
Chesapeake posted 01-10-2001 07:13 PM ET (US)     Profile for Chesapeake  Send Email to Chesapeake     

Thanks a ton. That was exactly the kind of info I was hoping to learn.

The other thing I have learned is that nothing is easy when restoring this old boat. Most tend to be at least 2 beer jobs.

Thanks again,


Alioop posted 01-10-2001 08:42 PM ET (US)     Profile for Alioop  Send Email to Alioop     
Bob, my yamaha is installed on my montauk using the auxillary lower mounting holes in the tilt bracket,if you look at the bracket these holes are higher up then the elongated lower mounting holes and are blind threaded holes Mike

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