When looking at RC46s crank problems, I took out my old failed crank (it lasted 12min after I bought the bike!)
The big end bearing and the bearing (with an o-ring) both on the magneto side failed. The previous owner had just installed the crank and I never could figure out why it failed.

I compared it to the partsmanual and the outer bearings were installed on the wrong side.

Is the manual correct ? Showing the bearing with the o-ring on the magneto side ?

Why is there only an o-ring on one side ?
_________________
Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom