BMW k75s Gear indicator

Lsdinc · Two Stroke Sniffer Joined: 20 Apr 2008 Karma :

Hi all,

I have a 1990 BMWk75s. 41k on dial.

I have been riding it the last month pretty constantly (about 2k in last month) and in the last week the gear indicator on the instrument panel has stopped working. It does not display neutral and does not show the correct gear.

The bike does not know it is in neutral either, when I start the bike I have to pull the clutch to start even if I'm in neutral. On a side note the speedo stopped working for a short period and started working again so it may be a cable issue.

The instrument panel does have a lot of condensation on it, I'm not sure if that would be a factor. I'm not sure if it is a problem with the gearbox or just a loose cable, I have tried to look around in the internet but i can not find any other posts on this subject.

Other then that the bike is running great and all the other lights on instrument panel are working well.

Any advice would be great, thanks a mill

Les

MCN · Super Spammer Joined: 22 Jul 2015 Karma :

I'm not sure of the bike model but I had a similar problem on my R1200GS.
The problem was the switch on the gearbox.

If you can look for a parts diagram it may be that. You can try whipping it out and cleaning it first.

I had a rummage around here

https://realoem.com/bmw/enUS/partgrp?id=0563-EUR-01-1990-K569-BMW-K_75_S_0563%2C0572_

Mibby this No 19

https://realoem.com/bmw/enUS/showparts?id=0563-EUR-01-1990-K569-BMW-K_75_S_0563,0572_&diagId=23_1154

Lsdinc · Two Stroke Sniffer Joined: 20 Apr 2008 Karma :

thanks a million, I'll take a look at the transmission switch.

WD Forte · World Chat Champion Joined: 17 Jun 2010 Karma :

Yup, clean all connectors first
Dont use WD40, use proper switch cleaner or even ACF50
K's like many bikes are known to get the weather in the connectors
and hopefully that's all your problem is.

There was a Goretex membrane mod for K type clocks
can't recall when it became standard fitment or if it was any good or not though.
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Oldie · Brolly Dolly Joined: 05 Dec 2010 Karma :

The gear position switch on the back of the gearbox is tricky to access, but just might be the problem as they are prone to water penetration.

However, it might be the large connector behind the clocks unit. I'd try wiggling that first to see if you get a result. The do come loose.

jjdugen · World Chat Champion Joined: 03 Jun 2011 Karma :

The gear position switch on the back of the gearbox is tricky to access, but just might be the problem.
More than likely.

However, it might be the large connector behind the clocks unit. I'd try wiggling that first to see if you get a result. The do come loose.
Yes it does, but on one of these things, that is far too easy.
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