Author Topic: Assembling top case - gear play question - something doesn't feel right...  (Read 851 times)

0 Members and 1 Guest are viewing this topic.

Offline goaarongo

  • Enthusiast
  • **
  • Posts: 146
  • zen and the art of angle grinding
Hi all - I'm working on assembling a fresh motor.  Everything is squeaky clean and I've inspected and checked all the specs as best as I can.  Installing some new bearings, chains, etc.
I'm about ready to seal the lower cases back up, but there are 2 things giving me pause.  Hoping someone can help out. 

The starter gear on my crank has about an 1/8th an inch of lateral play.  I didn't disassemble it so I guess it was always that way, but it seems odd.  Is this normal?
Just to make sure I'm not using the wrong terms, its this one:

I can move it to and away from the case a visible amount.
 
Also, I have a similar amount of play in the outside gear on my main shaft (5th gear - I think).  This one bothers me more.


Is this movement expected when the cases are seperated?  Everything else is tight and lined up nice.  These 2 just FEEL odd.  Does the movement serve some purpose I don't know about? Whats the tolerance here?  Any help / reassurance is much appreciated. 

Offline TheArchitect

  • Full Member
  • *
  • Posts: 46
Cant view the photos/videos you posted, but if you have not installed the neutral switch yet, things move around quite a bit, it actually holds the shift drum in place, otherwise it can move in and out.

There should be a 1/8" big flat washer on the starter gear, the one that the starter actually engages on. If that fell off it could be the play?

1978 CB550
1975 CB750