Vintage motorcycle tachometer repair.. Honda cb400t shown



quick video on what to look for and how to fix , a jumpy unsteady mechanical tachometer, on a Vintage Honda motorcycle.. most older motorcycles with a cable driven tachometer are very similar follow me on twitter https://twitter.com/fupabox

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6 Comments

  • thanks, it was very useful to see the interior of a functional tach! The spiral coil of mine is busted so i guess its time to replace…

  • Thanks for the vid. I have a 1983 honda cb450sc nighthawk and the tach is identical except for the case. same part dislodged

  • how to install taachometer on the motorcycle which doesnt have any tachometer from the factory??

  • I have a 83 shadow. my tach jumps a little but has a whining noise. any idea whatsup?

  • Hi. I assume a speedo with the same issue would be the same process to fix? Mine gets bouncy between 50-60mph. Brought a new cable, didn't fix the prob.

  • Great to find your YouTube video. I've been chasing screeching and erratic tachometer readings for quite a while. Finally I can put some real sense into my efforts. I have 20 speedometer and tachometers all told in my spare parts box to play with. One on only one of my Suzuki motorcycles has a tachometer that screeches and bounces all over the place on cold mornings. I'm guessing Nippon Seiki made a LOT of these for Japanese motorcycles because mine look a lot like yours. I have replaced cables with new ones from Suzuki and double checked and replaced the sending gear at the front wheel several times. I'm looking at a speedometer with a broken needle that didn't jump at maximum speed of my drill which was 20 MPH. Maybe it needed to go faster but it's faceplace is like new. It's odometer reads 75553.0 yep, not even 10.000 miles. Any ideas why these kind of things happen?? I don't see any magnetized particles around the bell or magnet.

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