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Ive seen this hose attached to the frame a few times now and started wondering what it’s for. It’s in between the rear shock and the fuse box above the belt guard.
I guess I coulda yanked the seat off and looked but that’s a pain in the *** and I been drinking so I’m lazy.
It's a fuel tank vent not related to any emissions.
Starts at the tank, there is a nipple on the fuel filler bung under the black console housing, there is a short section of rubber hose that goes from that nipple to the left side of your frame neck. There is a little inline one way valve (black round piece) where the rubber hose ends and a plastic line begins.
That plastic line runs along the frame backbone (under your fuel tank) and ends up in the down tube of your frame (your pic).
It's a fuel tank vent not related to any emissions.
Starts at the tank, there is a nipple on the fuel filler bung under the black console housing, there is a short section of rubber hose that goes from that nipple to the left side of your frame neck. There is a little inline one way valve (black round piece) where the rubber hose ends and a plastic line begins.
That plastic line runs along the frame backbone (under your fuel tank) and ends up in the down tube of your frame (your pic).
Again, it is a fuel tank vent.
On my 98 Ultra, it also dumps should you overfill.
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