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Which of these pipes lets the tank run empty? Pics included, can anyone identify the hose?

230 Views 8 Replies 5 Participants Last post by  Tinsnips
Hey all, thanks in advance for the help. Got a '99 750 here, been sitting for 2 years. (premium fuel in it though thankfully).

I wanna get the old fuel and whatever other junk is in there drained out before I fill her up and start her again.

Which one of these hoses do I detach to let the tank run empty? Does anyone know?
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Your '98 'may' be different than my 2018 but one should be a tank vent, one tank overflow, and the circled one the supply line to the fuel rail. To empty my tank I just disconnect the supply line from the fuel rail, put the end of the line into an empty 5-gallon gas can, and jump the fuel pump relay terminals to pump the gas into the gas can. Note: it's possible that any debris in the tank could clog the fuel filter, so just taking the tank off and dumping it from the filler cap may be a better option.
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