Topic: jumpy instrument needles

[Shawn Parker]

Hello,

I've got a '77 750F2.  After riding around for a bit, I often get the tach and speedo needles jumping around.  What's the cause and what can be done? 

Shawn Parker
1977 750F2

[Bob Wessner]

Is this something that just started happening? Did you disconnect them at anytime and perhaps the cables are not seated correctly? Did you lube the cables?

[oldbiker]

Sounds as though the cables are dry. Remember to lube these cables do not use grease. Grease goes dry and hard and makes the cables jumpy. Use a good oil.

[eldar]

Another possibility is that the gauges are dirty and need cleaning and lubing.
There is a resource somewhere that shows how to take the gauges apart. I saw it bofore but dont remember.

I am sure someone else has the source though.

[Jonesy]

I think the site you are referring to is: http://www.salocal.com/sohc/tech/speedo/spedo1.htm

[eldar]

Yup thats it. I used it and pulled mine apart easily. Just take your time.