r/YamahaR9 • u/SnoozeWalrus3221 • 12d ago

2026 R9 Fuel Tank Breather & Drain Hose Routing?

There are two nipples right next to each other on the bottom of the fuel tank. I removed the tank to get my ECU out and install an air filter, and I forgot to note which hose connects to which nipple.

The two hoses are the fuel tank breather hose and fuel tank drain/overflow hose. Does anyone know which hose goes to which nipple? Or does it not matter which one goes to which?

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u/shorelineshower33 10d ago

I lost track when I took my fuel tank off as well and just tried to guess as best as I could based on how the hoses were positioned. Bike hasn’t blown up since then so I probably guessed right?

1

u/Finnalandem 12d ago

Following, I’m curious about this too when I do my ECU and Exhaust in the spring

1

u/Away_Victory449 12d ago edited 12d ago

I’d look at a diagram and see where it goes and which is which When I did mine I put tape around the hose and the gas tank nipples and numbered them. But they are both just a hose exiting the bottom

1

u/SnoozeWalrus3221 2d ago

Update: So I just recieved my ECU today and put my bike back together. I just hooked up the hose by proximity. And I went for a test ride. The bike exploded.... JK everything was fine. I got lucky or it doesn't really matter.