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Old 03-03-2010, 03:30 PM   #1
paolohn
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Default I understand the need for a reserve tank, but why the OFF??

I hadn't noticed that my bike [Yamaha xvs650] has a small knob justbeneath the tank...it's got 3 options...FUEL , RES [which is the reserve tank that has saved my behind a couple times already] and and OFF...but what is the OFF for? Why do I have to select OFF when not using the bike?
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Old 03-03-2010, 03:58 PM   #2
Buzglyd
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Because unless it's a vacuum style valve, it can flood your carbage.
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Old 03-03-2010, 04:31 PM   #3
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What if you need to remove the tank? (quite common to do in order to service certain parts of the bike) How are you going to keep the fuel from spilling everywhere if you can't shut it off?

And as Buz noted: sometimes, even the vacuum-c0cks leak-by. If a float in a carb hangs as well - you've just filled your engine full of gasoline.
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Old 03-03-2010, 06:13 PM   #4
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I've been told by some to park em, turn the fuel off & let it run out of gas (the gas thats in the carb(s)). But I dont let my bike sit & never have.

You probably have 4 positions actually on, off, reserve & prime.
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Old 03-04-2010, 07:39 AM   #5
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It's an anti-theft feature. scumbag thief takes off on your bike, 2 blocks later the bike quits, you walk over, turn the fuel on and ride it home.
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Old 03-04-2010, 07:56 AM   #6
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Quote:
Originally Posted by A Star Ride View Post
I've been told by some to park em, turn the fuel off & let it run out of gas (the gas thats in the carb(s)). But I dont let my bike sit & never have.

You probably have 4 positions actually on, off, reserve & prime.
If you run the gas out you risk drying out the seals in the carbs. Best to use fuel stabilizer if you are going to let a bike sit. It'll keep gas good for a year or more.
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Old 03-06-2010, 10:10 AM   #7
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So it's for storage purposes. Good to know [I'm not letting my bike sit for the next couple years though] Thanks a lot for the answers!
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