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GPz900A1 tacho/voltmeter

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RBY
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GPz900A1 tacho/voltmeter

#1 PostAuthor: RBY » Thu Oct 30, 2014 1:25 am

Thanks to Is Vic There and chrispydick, I got the carbs back in and all the diligent work on the jets has paid off. An oil and filter change, coolant change and she fired up first hit on the button - not too bad after sitting for more than 22 years (a sin I know but trying to redeem myself)! However the tacho/voltmeter isn't working, any pointers on this one would be greatly appreciated.
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Is Vic There
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#2 PostAuthor: Is Vic There » Thu Oct 30, 2014 5:23 am

It might be a bad earth or dodgy button.
Can't really help as electric is witchcraft :lol:
Norton 850 Command, Harris Mag 2, Harris Mag 5, Triumph Steve McQueen, Suzuki RGV250 Barry Sheene, RG250 Walter Wolf, RD125LC, Lambretta Li150, Vespa 50N.
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z1bman
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#3 PostAuthor: z1bman » Thu Oct 30, 2014 9:11 am

it will be a build up of corrosion on the contact plate
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Rhencullen
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#4 PostAuthor: Rhencullen » Thu Oct 30, 2014 10:05 am

The tacho on a 900R is fed from a black wire that also provides power to the coils. It joins in the loom however and if the bike is running OK, this joint might be suspect.

Lots more info here - well worth the £5 subscription to join the club and forum.
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