Possible Speedo Issue

I believe that either the speedo or tach or both are off. Does anybody know a good way to check if they good? and if they arent reading true a way about getting them to read true?

Thanks

P.S. i have a 1981 KZ550A

Give these guys a call:http://www.z1enterprises.com/reference/ZResto_home.aspx

I've read good things about their work.

Hook up a gps unit and compare. Or have your wife follow ahead at a specified speed....Russ

well i checked my speed on a radar equipped speed limit sign that just got put up... it checked out at 25mph and 35mph so my speedo is good but i went on a small road trip yesterday and as i approached redline the tach needle just started bouncing between 10,000 and 8,000 rpms anybody ever deal with this before?

DoubleL3 wrote:

well i checked my speed on a radar equipped speed limit sign that just got put up... it checked out at 25mph and 35mph so my speedo is good but i went on a small road trip yesterday and as i approached redline the tach needle just started bouncing between 10,000 and 8,000 rpms anybody ever deal with this before?

Tach bounce might result from frayed interior tach cable or just need cable disassembly, cleaning and lubing.

If in doubt, replace cable with a new one.

Click here > for Z1E tach cable

Good Luck!

My '81 KZ550D1 has always had problems with the tach and speedo. They jump around quite a bit and are not very accurate. Even after taking the cables out and lubricating them. I bought a new KZ550 in '81 and I remember those gauges jumped around a little, even when new.

Robert