Topic: Yet another primary chain thread

[cj8990]

The trouble is I don't know what a good primary chain should feel like.

Here is a video.. what do you guys think? 

In addition here is a video of the bike running before I tore it all apart.

Carbs were not in sync when the video was shot.

[flybox1]

Tough to diagnose the chain this way.  As looks go, its probably fine.
However, the tensioner is more of the issue.  It can viewed and assessed through the oil pan. 
Its spring can go soft, and the roller can start to disintegrate.
Those would be more my concern.   Unfortunately, the cases need to be split to change them out.

[cj8990]

Sorry I always forget to mention this is a cb550 not a 750.. The primary does not have a tensioner.. Unless you are referring to the timing chain tensioner.

Thanks for the reply BTW!

[flybox1]

Sorry I always forget to mention this is a cb550 not a 750.. The primary does not have a tensioner.. Unless you are referring to the timing chain tensioner.

Thanks for the reply BTW!

My bad.  Had 750 in my mind. 

[BomberMann650]

Does the old drive chain bend rule apply to the primary chain?

Where you hold the two ends with the links parallel to the floor?  If it sags into a U it's over stretched?

Curious Inquiry