Topic: 1979 CB650 tachometer squealing.

[Scotiabiker79]

Hi all

So the 650 is running well.  I took it for a ride this afternoon and it started squealing.  I thought it was the motor at first.  I had it idling in garage and then realized the noise was coming from the tach. I disconnected the cable from the tach and noise gone.  I did notice when riding it before the tach needle would bounce in a few rpm spots.  When running with cable connected the shaft spins freely. 

So my question

Is the tach repairable or should I just get a new tach ?

Sorry for the long winded post. 

Scotia
 

[PeWe]

My  speedo has squeeled like that.
Removed it, upside down and gave it some oil via the cable connection. Let it soak for a while.
Not too much or too thin, risk it can flow out over the face. My speedo happened shortly when back on the road 2014.
Still work fine.

It is sometimes the cable itself before it gives up for good.

[scottly]

I went through the same thing a few years ago with a speedometer:
http://forums.sohc4.net/index.php/topic,138221.0.html

[Scotiabiker79]

So update.  Sprayed penetrating fluid in the tach itself and some in cable.  No more squealing.   I put a bunch of miles on the bike worked great. 
I have a tach cable on order if the of cable fails in future.