1984 venture thermostat

[Tiresmoking]

Does anyone know what size o-ring I need to put on the tube that goes across the front of the motor to into the thermostat housing?it had one in it then covered with jb weld. I want it done right. I didn’t do it bought the bike that way.

Thanks in advance

[SpencerPJ]

I am not sure which o-ring you are asking, but here is a link to a parts break down, and when you select your bike and find your part and part#, Google the part number and I bet you find your answer.

 

https://www.yamahasportsplaza.com/oemparts/c/yamaha_motorcycle_1984/parts

[Tiresmoking]

It’s the metal tube that goes across in front of the motor that has the drain cock assy,it goes over to the thermostat housing. I couldn’t find it on that website. You can see the the tube and housing under the radiator section. But just not a good enough picture