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Alright,sorry for the delay.

I measured my bearings; OD 20mm, 16 ID and about 18mm wide.

Mine have 31 roller bearings; does PN 11 33 1 261 712 have 31 individual roller bearings?

Also, where can I get rocker shafts?? Mine looks a bit worn and I'd like to replace.

Thanks!

Thanks again.

I've read that article, but it gets a bit fuzzy about the 1975 /6 series. I have a mfg date of 5/195...is this 'early'...?

I am planning on bearing inspection this weekend...I'll report back with info.

Thanks Kurt!

I'm not sure if the bearings are NOS..I'd be guessing no...how could I tell before I spend the $$?

Hi, I'm a bit confused. I have a 1975 R90/6 manufactured in 05/1975 according to the nameplate. I need to change the rocker bearing for the left side intake and exhaust. I have been fed conflicting information about the correct needle bearings to purchase, as I believe they changed them right around...

Success! She's a runner once again. Thanks for all the help! The best I can figure it was a faulty condenser...I know this is rare, but after yelling, poking and diagnosing it's the best I could come up with.

Whelp, got a new condenser and going to try that this morning. Appreciate this forums help as usual. To be continued...

Thanks! I love the honesty. And yeah, Dyna is not number on in my book either. Hence the switch back to points. I have to mess with it in the next couple days, but as of right now I get NO spark.:/ I suspect the condenser and will order a new one. Is there a replacement I can find at an auto store? ...

Roger that. I'm on the path to get it going on the points first, then switch over o the Dyna if the trash man hasn't taken them by then... What about the secondary resistance to the high tension (spark plug) lead? I'm getting ~6.3kOhms @ about 55 degrees ambient temp...? Is this really important to ...

Thanks!

So what about the coils' resistance values?

Thanks for your replies; very informative. I'll try to answer the questions posed... 1) Are you checking the timing with a strobe light?---Yup, the same one I've used recently ro time my R90, so I know it's at least kinda close. 2) What kind of strobe light?---not sure, nothing fancy. 3) At what RPM...