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YB10 reserve switch
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laminator



Joined: 27 Oct 2007
Posts: 318
Location: Midlands

PostPosted: Tue May 15, 2018 4:40 pm    Post subject: Reply with quote

I have had a look at quite a few latching red LED's but not found one that is the same. Although I have found some I'd be happy with, anyway....

I dug out the old set of clocks from a YB7 and they have the reserve light push-button on them. I believe its the same as the original, if not the original itself.



The reference on it is DS-700 although I couldn't find a match online.

If you have no joy finding one, PM me your address and I'll unsolder this one to get it out, then send it to you. I have put a 12v supply onto it and the LED is working


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Bimotas, Yamaha FZR 2TK, Honda NC30, MV Agusta F3 800, Aprilia RS250
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Bud977



Joined: 03 Mar 2013
Posts: 369
Location: Sydney

PostPosted: Tue May 15, 2018 8:22 pm    Post subject: Reply with quote

I had assumed this part was taken from the donor FZR1000. Does anyone know how the reserve light is reset on a stock FZR1000? I had a look at the parts list but couldn't find anything similar in the instrument cluster or electrical sections. BTW the FZR fuel level sensor is still available.
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Tirefriar



Joined: 18 Dec 2014
Posts: 518
Location: USA

PostPosted: Wed May 16, 2018 5:10 am    Post subject: Reply with quote

My YB10 arrived with the reserve switch and mechanism deleted. I went on to install Acerbis petcocks opened to reserve. Key is to keep keen eye on the odometer. I don't let it go past 150km, or just under 100 miles between fill ups. The 100 mi marker has been my rule of thumbs on pretty much all my bikes.

I know this is sort of a "chicken sh!t" approach to resolving the problem with the reserve switch and it doesn't add to originality of the bike, but its sure is cost effective and much more trouble free, unless of course one forgets to keep track of miles between fill ups...
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1991 Bimota YB10
2002 Kawasaki ZX6R track bike
2013 MV Agusta Brutale 1099RR
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Admin
Site Admin


Joined: 22 Oct 2007
Posts: 503
Location: Stafford, UK

PostPosted: Wed May 16, 2018 10:59 am    Post subject: Reply with quote

Hi

I have a very non standard switch wired in, cable tied to the fairing subframe at the moment! I would like to replace it with a standard style one, and like a source of a few of them.

The original Yamaha system is quite different. Think it is the same as the FZ750, and as such uses a sensor in the tank. When the fuel level drops to a certain level the fuel pump cuts out. The reserve switch just forces the pump to run even when the fuel level is below the sensor.

I have a suspicion my fuel petcock is playing up now. Seems to flow when on or off. Found this out when it ran out of petrol when pulling on to the drive Laughing .

All the best

Katy
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Jonny B Bad



Joined: 05 Dec 2009
Posts: 412
Location: NE London

PostPosted: Wed May 16, 2018 12:00 pm    Post subject: YB Reserve switch Reply with quote

There is so much scope for fuelling woes on these bikes - carbs difficult to set up and difficult to get on and off and prone to wear - main fuel cock which seems to flow (or not!) what ever position it's in - tendency for fuel tank to crush pipe/s supplying the pump, once the motor is warm and has softened the fuel hose - failure of cheap and cheerful reserve switch - failure of points in the pump - inaccessible idle screw - inaccessible mixture screws.

Fortunately, they make up for all this when they're running properly - or at least I think they do - it's been so long since mine did Shocked
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laminator



Joined: 27 Oct 2007
Posts: 318
Location: Midlands

PostPosted: Wed May 16, 2018 1:32 pm    Post subject: Reply with quote

I may of found a supplier??

https://www.e-switch.com/product-catalog/pushbutton/product-lines/d16-series-illuminated-pushbutton-switches#.Wvwap4AvyUk

This looks like the right one and is made by a company called Miyama. I have sent a request to them for availability and cost.

edit - this is the one fitted to the clocks I have. Even though it states 'Rating: 3A@125 & 1A@250V AC' it does illuminate when 12v DC is applied.
https://www.mimic.co.za/product/ds700-f1c
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Bimotas, Yamaha FZR 2TK, Honda NC30, MV Agusta F3 800, Aprilia RS250


Last edited by laminator on Fri May 18, 2018 2:10 pm; edited 1 time in total
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Bud977



Joined: 03 Mar 2013
Posts: 369
Location: Sydney

PostPosted: Wed May 16, 2018 9:29 pm    Post subject: Reply with quote

Admin wrote:

The original Yamaha system is quite different. Think it is the same as the FZ750, and as such uses a sensor in the tank. When the fuel level drops to a certain level the fuel pump cuts out. The reserve switch just forces the pump to run even when the fuel level is below the sensor.

Katy


On the FZR1000, the low fuel level triggers one cylinder to cut out. The push button is an acknowlegement of low fuel and re-starts that cylinder.
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Bud977



Joined: 03 Mar 2013
Posts: 369
Location: Sydney

PostPosted: Wed May 16, 2018 9:35 pm    Post subject: Re: YB Reserve switch Reply with quote

Jonny B Bad wrote:
There is so much scope for fuelling woes on these bikes - carbs difficult to set up and difficult to get on and off and prone to wear - main fuel cock which seems to flow (or not!) what ever position it's in - tendency for fuel tank to crush pipe/s supplying the pump, once the motor is warm and has softened the fuel hose - failure of cheap and cheerful reserve switch - failure of points in the pump - inaccessible idle screw - inaccessible mixture screws.

Fortunately, they make up for all this when they're running properly - or at least I think they do - it's been so long since mine did Shocked


So true. On my race YB8, I have made sure I've kept the original Yamaha fuel hose to stop kinking. It's a heavy duty hose with a braided cloth cover and very resistant to kinking. I use one outlet with a high flow TZ250 fuel tap so no blockage problems.
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Jonny B Bad



Joined: 05 Dec 2009
Posts: 412
Location: NE London

PostPosted: Thu May 17, 2018 9:13 am    Post subject: YB Reserve switch Reply with quote

Oh, and did I mention how critical float height is and how far it can end up from the 12-14mm recommended by Mr Yamaha!
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