Should we shut off gas between rides ? - Polaris ATV Forum
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post #1 of 16 (permalink) Old 03-19-2012, 04:33 AM Thread Starter
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Should we shut off gas between rides ?

Just got a new Sportsman 500 HO and the manual said we should shut off the gas when it's not being used. It's a good idea but do people really do this ?

I've looked and looked, but I don't even see a gas shut-off. Which side of the 4-wheeler do I access it and does it look like a regular three-way shut off ?
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post #2 of 16 (permalink) Old 03-19-2012, 04:46 AM
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4640, We usually never shut off the fuel unless it going to be a long period between riding time (like seasonal or repairs) we have a 660 grizzly, a 500 ho polaris sportsman, a 400 polaris sportsman and a 250 honda recon, usually when we shut off the fuel we forget "duh" to turn it back on and then sit there like dummies going ok whats wrong now, lol, anyway we always leave our fuel supply on and so far i dont reckon we've had any issues.
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post #3 of 16 (permalink) Old 03-19-2012, 06:58 AM
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On my old Suzuki Z400 I always left the fuel on even during extended periods of storage. The thinking is that a larger volume of gas takes longer to go bad than a smaller volume of gas. When you shut off the valve you'll end up with some left in the carb and fuel lines that is isolated from the tank, meaning in theory it would go bad faster.

Heard this from a Harley mechanic a while back and it made sense to me.


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post #4 of 16 (permalink) Old 03-19-2012, 07:04 AM
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I always did.
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post #5 of 16 (permalink) Old 03-19-2012, 08:06 AM
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shut it off just my opinin

on the carb. models ( in theary needle and seat could possibly get stuck open and flood engine with gas ) Just my thoughts
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post #6 of 16 (permalink) Old 03-19-2012, 09:30 AM
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Originally Posted by mowreyj View Post
on the carb. models ( in theary needle and seat could possibly get stuck open and flood engine with gas ) Just my thoughts
You are 100% correct. Also, could
flood your garage/shed floor

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post #7 of 16 (permalink) Old 03-19-2012, 10:13 AM
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On my 2012 500HO the shut off is on the left front behind the top of the tire ( red knob ). Not very easy to locate but it is there. Maybe that's why folks choose not to shut it off.

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post #8 of 16 (permalink) Old 03-19-2012, 12:12 PM
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In a single word? YES! Also, when you do this run the machine until it dies. That will remove most of the fuel left in the bowl. I don't know who the Harley mechanic was but he's f.o.s.!!!! The idea of leaving it open takes longer for the gas to go bad is totally wrong unless you go out and shake the thing every day or so. Have any of you ever seen a fire with an open petcock??? Kiss everything within a few feet good-bye! Not so with it off. It's a saftey thing here guys!!!

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post #9 of 16 (permalink) Old 03-19-2012, 05:03 PM
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I'm with Reno, I shut mine off every time I put it away and I let the engine run until it dies. Thanks to ethanol I've had nothing but carb problems in all my small engine machines.

Use fuel stabilizer, shut the petcock off, and run the carbs dry when you're not using it.
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post #10 of 16 (permalink) Old 03-19-2012, 08:31 PM
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I make it a habbit to turn mine off even if its not for long periods. When I do park for long period I turn off the gas and let the quad run till the fuel empties from the carb and the engine dies. Dont like fuel sitting in the carb even with additives like stable fuel.
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