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Makotosun

MX250/360 petrol tap valve wanted.

  • Gr8uncleal
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MX250/360 petrol tap valve wanted. was created by Gr8uncleal

As per the title, does anyone know a supplier of what Yamaha call the "valve" that sits inside the tap for the 1973/4 MX250/360 petrol tank? Yamaha don't list it as a separate part, but it could easily be a part that is shared with other models and makes.

The tap is genuine Yamaha.

Approximate dimensions (because I think mine has shrunk and the tap is leaking!) are diameter of 22mm and thickness of 2.75mm. There are four inner holes of perhaps 5.25mm, with NO hole in the centre.

Many thanks.
22 Oct 2026 08:41 #1

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Replied by Schu on topic MX250/360 petrol tap valve wanted.

I follow this thread with interest because the petcock is seeping fuel in the OFF position on my 1974 MX250A.

It is not leaking like dripping on the floor. But if you pull the fuel hose of the carb you will see that it will slowly seep fuel when it is in the OFF position.
Schu

CT1B, CT1C, JT1, JT2, CT2, RT3, DT360A (2), GT80B, DT100B, DT125B, DT175B, DT175C, DT250B (2), DT400B, Z50

Someday, you'll own some Yamahas
Last edit: 22 Oct 2026 12:14 by Schu.
22 Oct 2026 12:11 #2

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