Thought I'd try here as well as in the engine section.
The last ride my 1963 CB77 developed a kind of hoarse rattle at about 4000 RPM and above. It sounded like something from the left sidecover.
The primary chain was loose, as usual, but the tensioner could make it tight, and it has not rubbed on the sidecover.
Nothing wrong with the centrifugal oil filter either.
The shifter mechanism looked OK.
The clutch basket has some, maybe 0.040 inches, of axial play. That is, when I grasped it I could pull in in and out a bit while the driven plates stayed stationary. Is this normal?
If not, it could be the source of the rattle.
Thanks for opinions,
Larry
Clutch rattle?
OK, I took a better look. see IMG_2501.
I reversed the circlip holding the clutch onto the transmission mainshaft, in case it was "dished" causing axial play. There was still some play. I also adjusted the cam chain tensioner. The rattle is now diminished, but I believe it may have to do with tightening the clamps holding my muffler to the header pipe. Oh well, I needed an oil change. The filter was spotless after 1000 miles, by the way. I never seem to see the vast accumulation of muck that others report, perhaps I slip the clutch less? More likely, my clutch disks are so old there they shed less material. Important Side Cover Note: See IMG_2503, the locating pin on the oil filter tube must be pointed up, or it does not fit the corresponding groove in the side cover and bad things will happen when you tighten the sidecover screws.
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