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Tachometer/Rev Counter: Electronic or Mechanical?
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Author:  Lost_Coast_Paso [ Sun Sep 13, 2009 3:21 am ]
Post subject:  Tachometer/Rev Counter: Electronic or Mechanical?

Greetings. The tach/rev counter on my '91 907 quit working. An earlier thread talked about a "Proximity Switch", part #55240051A, but my parts catalog shows a cable and "rev counter gears", part #066792160, which looks very much like the mechanical tachometer that has been on every bike I've owned, going back 30 years. Is the tach/rev counter an electronic device, a mechanical device, or a combination of the two?

Thanks,
Tim

Author:  paso750 [ Sun Sep 13, 2009 7:36 am ]
Post subject:  Re: Tachometer/Rev Counter: Electronic or Mechanical?

it`s purely mechanical. The switch you`re referring to is part of the ignition system.

G.

Author:  persempre907 [ Sun Sep 13, 2009 8:37 am ]
Post subject:  Re: Tachometer/Rev Counter: Electronic or Mechanical?

Have you tried to check the cable? They are prone to fail.
Ciao

Author:  93IE [ Sun Sep 13, 2009 3:42 pm ]
Post subject:  Re: Tachometer/Rev Counter: Electronic or Mechanical?

Mine quit the week before last. The cable was broken about 1 inch below the tach fitting. I re-routed it as so not to have it bent where it connects to the tach.

Preston

Author:  Lost_Coast_Paso [ Sun Sep 13, 2009 7:04 pm ]
Post subject:  Re: Tachometer/Rev Counter: Electronic or Mechanical?

Thanks, everyone. That's good news.

-Tim

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