Yamaha Prop On Mercury

**kostas74** · 09-08-2008, 04:04 PM

I have a yamaha hi performance propeller (small hub)
and i was wondering if ican fix it on an optimax 200.
is this posible?

**kostas74** · 09-09-2008, 05:51 PM

no one?

**Ted Stryker** · 09-09-2008, 09:04 PM

I think it should fit but count the splines, they should have 15...

**kostas74** · 09-10-2008, 06:25 AM

Both the engine and the propeller have 15 splines.
What about the thrust whasher?

**Markus** · 09-10-2008, 06:47 AM

The splines are the same.

There is a one degree difference in angle between the shoulder on the propshaft on Merc. vs. Yamaha, so a Yamaha thrust washer does not quite fit a Merc.

There are prop shops that offer special washers.

However, in practice, the brass is soft and lots of people use Yamaha thrust washers on Mercs, so I would not worry.

**Carter Powell** · 09-10-2008, 11:37 AM

I have run the Yamaha thrust washers for years on Mercs. The only thing is that you need to cut of the little protruding portion of the thrust washer that would push against the prop shaft seal on the mercurys prop shaft. That small lip must be removed or it will destroy the prop shaft seal. You can just cut it off with a hack saw and then file it smooth.

Carter Powell