Washer between Yamaha prop and nut - Name?

[alt]

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

[1up]

I got a feeling it is also a thrust washer, the idea being to clamp the prop between the two.

[Limey Linda]

Yup, it is called a tab washer.

[alt]

Cheers guys

[jyasaki]

Originally Posted by alt

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.

[alt]

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

Originally Posted by jyasaki

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.

[jyasaki]

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.

[1up]

Originally Posted by Limey Linda

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