Source for this goofy O-ring?

[85RZwade]

I put the RD350 bottom end together (6 speeds present and everything turns freely and smoothly) and found my right side crankshaft O-ring 360-11526-00-00, the goofy one:



is crap. Economy is out of stock, CMS has a reproduction in the Netherlands and there are a few on eBay for $60-70. Couldn't find it at any retail site, HVC or FFTP. Anybody know of a better source than I've found?

[rodneya]

I put the RD350 bottom end together (6 speeds present and everything turns freely and smoothly) and found my right side crankshaft O-ring 360-11526-00-00, the goofy one:



is crap. Economy is out of stock, CMS has a reproduction in the Netherlands and there are a few on eBay for $60-70. Couldn't find it at any retail site, HVC or FFTP. Anybody know of a better source than I've found?

I don't use them, just a bit of yamabond on the key


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[85RZwade]

Thank you, I thought I remembered a post to that effect but couldn't find it. DesmoDrew found them at Mike's XS as well, so I just have to decide how impatient I am. I have Yamabond 4...

[vinyas]

Wade

Please see if this works

https://www.ebay.com/itm/Rubber-Seal-Crankshaft-Yamaha-RD250-RD350-RD400-1973-1977-Crankshaft-O-Ring-/153437427452?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=707-127634-2357-0

https://www.mikesxs.net/yamaha-crankshaft-seal.html

https://www.dimecitycycles.com/yamaha-crankshaft-seal.html

[m in sc]

ive used just an o ring and a dap of silicone in the slot. use 'the right stuff'. or nothing, early bikes didnt even have that o-ring, just a longer key. ;)

[pdxjim]

What mark said.

LC just uses a plain o-ring. 

Dab a little MotoSeal on the key as needed.

[Striker1423]

what size oring to be sure?

[RustyRD]

I got one from Lyn , and if I remember right Lyn said yamabond would do.

[soonerbillz]

This thread should be added to the "engine" section of the Yamaha tech posting page.
Stuff like this is golden info.

[85RZwade]

Thanks to all for the information; more pearls than I hoped for!

[SoCal250]

what size oring to be sure?

24mm OD, 1.7mm cross-sction

This thread should be added to the "engine" section of the Yamaha tech posting page.
Stuff like this is golden info.

Done!   

[85RZwade]

I decided to go the Yamabond route. It's curing near the wood stove now.

[rickdecollo]

Where is this seal located? I can not find it in my shop manual.
Thanks much

[SoCal250]

Right side of the crank, it seals the primary gear. It was a change made by Yamaha midway through the 74 model year