[Cover Tune]

Just went on a ride, about 100km each way. No problems on the way down, but during the ride back a few hours later, I noticed that at highway speed, my speedometer needle was "bouncing" a lot, sometimes as much as 10km/h. Didn't feel any change in the bike.

Bike is a 1983 Maxim XS400.

Thoughts?

 

[DianneB]

That is usually caused by the speedometer cable getting dry. Pull the core out of the cable, wipe it down with light grease and re-install it. That should fix the problem.

 

[Stablefull]

Hmmmmm...good to know!

 

[hogcowboy]

Or on some later model bikes you might have a magnetic speed sensor unit somewhere on the transmission that might be loaded up with metal fur. Just pull it, wipe it off and reinstall. At least this is so on Harleys.

 

[ketchboy]

Also, if you have the older, cable type, put a little dab of grease on the end that goes into the speedo housing. Sometimes it gets dry up in there.