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More Yamaha 25 prop shaft Questions

Jan 4, 2008
Yamaha Y25 mkII Long Beach, Ca.
Does anyone know the O.D. of the cutlass bearing? while the shaft is 22mm ( 7/8) the O.D. of off the shelf 7/8 cutlass bearing is a much larger diameter. I have no problem turning down the OD. I need the strut I.D. before tearing out the old cutlass.
Any help from the Y25 crows feel
free to chime in!

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Jan 4, 2008
Yamaha Y25 mkII Long Beach, Ca.
Nope, haven't had the opportunity. It will be the #1 project next time I haul out for bottom paint.
Best wishes to all through the holidays .


Aug 30, 2010
yahama 25 Hong Kong
The OD of the cutlass bearing is 11/4 while the shaft is 7/8 . my boat was 25 mark 1 built in 1977.The length of the strut is 4 inches but most of the available cutlass bearing is 31/2. it works on.