advance unit springs

[motobroker]

Working on my first cl72 (cl77 top end). I noticed that points cam had several degrees of free play before the advance springs started to tension.

I inspected the advance unit and noticed that spring hooks were loose on mounting pegs, but the coils were not stretched.

The springs looked ok, so I am wondering if the initial freeplay due to spring slop in the advance unit springs is normal ?

[LOUD MOUSE]

There should be no free play.
Tension should be at the time ya move the points cam.
I've found CB/CL72/77 cam sprockets which had DREAM springs installed ????????????? and the pistons showed heavy soft soot/carbon. .....................lm

Working on my first cl72 (cl77 top end). I noticed that points cam had several degrees of free play before the advance springs started to tension.

I inspected the advance unit and noticed that spring hooks were loose on mounting pegs, but the coils were not stretched.

The springs looked ok, so I am wondering if the initial freeplay due to spring slop in the advance unit springs is normal ?

[motobroker]

Thanks for the info.
Any tips on where I can source the springs? I have not had any luck finding an online vendor that has springs.

Also is it possible there is wear in the advance unit itself, since the springs appear ok ?
I noticed you can still get the entire advance unit assembly from Honda.

[LOUD MOUSE]

Actually ya can bend some of the slack from each spring.
I've used long nose pliers with good grip to bend them on the sprocket.
Ya can tell as each has the correct length as ya bend them one at a time. ..................lm

Thanks for the info.
Any tips on where I can source the springs? I have not had any luck finding an online vendor that has springs.

Also is it possible there is wear in the advance unit itself, since the springs appear ok ?
I noticed you can still get the entire advance unit assembly from Honda.

[motobroker]

I appreciate the help. It sounds like the hook or loops at the end of the springs have a tendency to stretch. I spend most of my time on Brit bikes and later Japanese, so the 72/77s are new to me.

[nander]

I purchased a pair of these:

http://www.classichondarestoration.com/ ... _Parts.php

Haven't installed them yet - I am going to try and do it in place from the top, without removing the whole assembly.

[Wilf]

I made the same purchase last week and when they arrive I will be attempting the same fix, so let us know how you make out.

Wilf