1972 cb175 part ident help

[RGP750]

Hi All
Assembling 1972 CB175 gear box , gear change drum and came across the ring in the photos
lying on the bench.
i'm assuming it has come from the 175 as i can't think where else it has come from .
I can't find it in my parts book and Trigger has had a look in his micro thingies .
It's .9mm thick and has a small tag to stop it revolving i would think .
Any ideas welcome before i carry on and leave it out .
Cheers Rich

[haynes66]

i remember stripping and rebuilding my little TL125 and similar rings were fitted inbetween some of the gears, spacers maybe? i reassembled it exactly as it was and everything worked ok. i dont know if it could be something similar...

[Laverda Dave]

I've got something like that on the 250RS but it has two tangs on it. Its a thrust washer and sits next to a needle roller bearing. One tang sits either side of the 'ears' of the circlip and this is what stops it spinning. Might be similar on the 175?

[RGP750]

Thanks Guys, My thoughts at first but dia is far to great for any of the shafts

[Trigger]

Found it, it is for the crank  https://www.cmsnl.com/honda-cb175k6-super-sport-england_model16498/washer-35mm_90452216000/

I did say it was a bearing retainer

[RGP750]

Well done Trigg Thanks Mate.Mine is obsolete as i have a NOS crank going in with it on .Cheers
More confused now how it got on the bench

[Trigger]

Well done Trigg Thanks Mate.Mine is obsolete as i have a NOS crank going in with it on .Cheers
More confused now how it got on the bench

Like everything else on your benches, you put it there 

[RGP750]

No doubt, but as the original crank is still in it's bag ?

[AshimotoK0]

Just remembered Rich ...  when do you need the 175 down-pipes? How did the silencers work out?

[RGP750]

When you can Ash, Silencers not arrived yet ??
Thanks to Trigg i can now finish the bottom end ,(when i get time)