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LJ81 bouncing speedo needle
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Author:  Gussyb [ Tue Jan 05, 2021 4:06 pm ]
Post subject:  LJ81 bouncing speedo needle

Hi everyone i seem to be keeping all of you busy with my simple questions.
I just put a speedo cable in my LJ81 for the first time and the needle is bouncing around sometimes upwards of 20kmh. I don't know if this has anything to do with it but my son used to play around with the needle and spin it. if anyone has a way to fix this it would be greatly appreciated.
Cheers
Gus

Author:  fordem [ Tue Jan 05, 2021 8:29 pm ]
Post subject:  Re: LJ81 bouncing speedo needle

You may need to replace the speedometer head.

In many cases a bouncing needle is caused by a defective cable, but, if a kid has been playing with the speedometer head the likely hood of damage is extremely high - use a power drill to spin the cable input to the speedometer and see if the bouncing is still present.

How it works is the cable spins a magnet that sits very close to a circular disk, the resulting moving magnetic field causes the disk to move or follow the magnet as far as a clock spring will permit, if the disk gets bent so that it touches the moving magnet you'll get that bouncing - you can try straightening it, but, it's going to be a very fiddly job, and I don't think your chances of success are very high.

Author:  Gussyb [ Thu Jan 07, 2021 1:03 pm ]
Post subject:  Re: LJ81 bouncing speedo needle

Thanks mate,
I need to fix or get a new speedo head. hopefully I can find one cause I have been finding it hard to get LJ series Suzuki parts

Author:  losfer [ Wed Jan 13, 2021 5:28 pm ]
Post subject:  Re: LJ81 bouncing speedo needle

make sure there are no sharp bends in the cable from the transfer to the speedo.

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