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Old 15 August 2007, 11:36   #1
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Washer between Yamaha prop and nut - Name?

Hi guys,
I know the washer between the gearbox and the prop is called a thrust washer (ooh er) but there's another one that goes between the prop and the nut. It's like a fancy washer, and king of lock's onto the shaft splines - Anyone know the proper name for it?

Cheers
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Old 15 August 2007, 15:24   #2
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I got a feeling it is also a thrust washer, the idea being to clamp the prop between the two.
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Old 15 August 2007, 15:47   #3
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Yup, it is called a tab washer.
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Old 15 August 2007, 16:01   #4
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Cheers guys
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Old 16 August 2007, 12:37   #5
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Originally Posted by alt View Post
Hi guys,
I know the washer between the gearbox and the prop is called a thrust washer (ooh er) but there's another one that goes between the prop and the nut. It's like a fancy washer, and king of lock's onto the shaft splines - Anyone know the proper name for it?

Cheers

Yamaha calls it a spacer. You're talking about the thick stainless thingie that locks onto the splines, right?

There should be a flat washer that goes on top of that, as well.

Thrust washer, prop, spacer, flat washer, prop nut, cotter pin. And grease on everything.

jky

Sorry, for some reason, I thought you had a Yammie. If not, disregard this post. It may be accurate or may not. Not all manufacturers do it the same way.
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Old 16 August 2007, 18:45   #6
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I was enquiring about a Yamaha 50HP outboard, so thanks for the advise. Yes it's basicly like a big washer that locks into the splines.

Our local marine 'expert' has misplaced my neighbours one saying that they're not important

I told them not to dare run the engine until one is fitted. Just wanted to know the proper name for it. Cheers

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Originally Posted by jyasaki View Post
Yamaha calls it a spacer. You're talking about the thick stainless thingie that locks onto the splines, right?

There should be a flat washer that goes on top of that, as well.

Thrust washer, prop, spacer, flat washer, prop nut, cotter pin. And grease on everything.

jky

Sorry, for some reason, I thought you had a Yammie. If not, disregard this post. It may be accurate or may not. Not all manufacturers do it the same way.
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Old 17 August 2007, 11:07   #7
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The spacer is there so the prop doesn't bacng back and forth between the nut and the thrust washer. Yes, it's kind of important. I would hazard a guess that anything that allows the nut to cinch down on the prop (and remain in-balance) would be fine, though. Probably doesn't even need to engage the splines (though the correct part is always reassuring...)

I got a spare as part of a prop nut kit (spacer, flat washer, nut and cotter pin); I think that ran about $25 at a place known for not very good prices.
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Old 18 August 2007, 08:13   #8
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Yup, it is called a tab washer.

It is on a merc, but a yammie uses a split pin an castle nut, not a tab washer and locking tabs
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