Topic: New (for me) '77 CB750

[scottly]

Also, the K7 used a 630 chain vs 530 for the K6. There are front sprockets with 10mm offset for fitting an early engine in a late frame.

[SantaFeHonda]

rotortiller, What would I be looking for?

[BenelliSEI]

rotortiller, What would I be looking for?

With the 17” you likely have the correct rear hub (where the sprocket is mounted). Stand behind the bike and sight down the chain. Do the two sprockets and chain line up and is that line parallel to your direction of travel? Your bike looks very sanitary. I suspect it’s done right.

[scottly]

The K7 sprocket carrier mounts the rear sprocket 10mm outboard, to match the 10mm offset in the front. A pre-K7 carrier can be installed on the K7 rear wheel to correct the alignment, or an offset front sprocket can be installed on the early engine with the K7 rear sprocket carrier. Six of one, half a dozen of the other.

If the alignment is off, there may be more wear on one side of the rear sprocket than the other.

To check if the chain is 530 or 630, measure the center-to-center distance of the pins in the chain: a 530 chain has the pins 5/8" apart, while a 630 chain has 6/8", or 3/4" apart.

[SantaFeHonda]

rotortiller, What should I look for?

[rotortiller]

I would look to make sure the chain is not canted. It should be running 90 degrees to the axle and 90 degrees to the sprocket shaft on the engine. Your eyeball will see if it's off, best to take the chain guard and engine sprocket cover off when sighting on the center stand. The engine cover may need some fiddle farting to get out of position after the screws are removed. First pic is the K7 sprocket attachment by center bolt, second pic is how to view for a correct straight chain run.

[Stev-o]

if it looks good  ( and i think it does )   runs and rides good ,,   ride the hell out of it and have fun ! 

+1. Ride it!

I've been to Santa Fe several times, what a great City!  Interesting history [was part of Mexico back in the early 1800's] and great architecture [adobe].  Ski Santa Fe is a nice but small resort, taught my daughter how to snowboard there.