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Old 09-05-2017, 06:14 PM   #1
tomm9050
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Default Draining the tank....

I'm trying to drain my tank (2015). Attached a long hose to the petcock fuel line, turned on the tap and nothing happened. normal and reserve settings? Open the gas cap, still no flow. What's the procedure? How do you circumvent the vacuum? Thanks
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Old 09-05-2017, 06:39 PM   #2
Chuck B
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Default Re: Draining the tank....

Petcock requires vacuum to operate. Install a temp vacuum line to the petcock. Apply vacuum with your mouth. Fuel will begin to drain. I then grab a set of hemostats and clamp the vacuum hose. Tank will continue to drain. If I need faster drainage I'll take a larger clear line and insert in thru the fuel inlet cap. Apply suction (not with my mouth lol) and gravity drain the tank. Use the petcock for the last bit. Be sure and once fuel level stops while on resv lift the tank and tip to the left. This will drain fuel remaining on the right side of the tank over to the left side. Petcock will then drain this remaining bit out. This is also known as the double secret resv fuel all KLR's are equipped with. I've gotten 9 to 11 additional miles using it.
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Old 09-05-2017, 11:14 PM   #3
tomm9050
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Default Re: Draining the tank....

Thanks! Worked perfectly.
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Old 09-13-2017, 08:04 AM   #4
Stich
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Default Re: Draining the tank....

I'm so glad I put a manual petcock on my tank. I also religiously turn it on and off when I ride and park.
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