Fuel Petcock Question

Ski_rush · 05-03-2017, 05:09 PM

I sold my Enforcer and bought an '04 Suzuki GS500F. Love it. I don't miss my Enforcer one bit, but I do miss this forum. People on here are very helpful and quick to respond.

I have a question about the fuel petcock on the GS500.

What should I set the fuel petcock to when the bike is parked in my garage? I see 3 settings, Res (reserve), Pri (no idea what this is, prime?), and On (this one is obvious).

What does Pri stand for? And, is that the setting I should put the petcock on when the bike is parked?

Pics of my new bike:

**JerryHawk250** · 05-03-2017, 05:43 PM

I like the new bike.

PRI stands for prime. Prime is used to fill the bowl, bypassing the vacuum system and shouldn't be used during normal operation. So leave it in the on position.

Ski_rush · 05-03-2017, 06:13 PM

I've been starting it with the petcock in the ON position. Is it supposed to be on prime? When is the prime position supposed to be used?

**JerryHawk250** · 05-03-2017, 07:20 PM

It should be in the on position. You only use the pri position if you need to prime the fuel system say like after changing a fuel filter or any fuel system maintenance. Your fuel system is a closed system because of the epa bs. When your ignition is off there is a vacuum operated valve that shut the fuel off. So no need to shut the fuel off with the petcock like on our hawk or like on the Enforcer you had.

Ski_rush · 05-03-2017, 07:44 PM

Thanks, I understand it now.

Azhule · 05-03-2017, 08:05 PM

Nice "new" bike. I see Jerry has it covered

humanbeing · 05-03-2017, 11:44 PM

05-03-2017, 05:09 PM	#1
Ski_rush Join Date: Feb 2017 Posts: 449	Fuel Petcock Question I sold my Enforcer and bought an '04 Suzuki GS500F. Love it. I don't miss my Enforcer one bit, but I do miss this forum. People on here are very helpful and quick to respond. I have a question about the fuel petcock on the GS500. What should I set the fuel petcock to when the bike is parked in my garage? I see 3 settings, Res (reserve), Pri (no idea what this is, prime?), and On (this one is obvious). What does Pri stand for? And, is that the setting I should put the petcock on when the bike is parked? Pics of my new bike:
	3

05-03-2017, 05:43 PM	#2
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,545	I like the new bike. PRI stands for prime. Prime is used to fill the bowl, bypassing the vacuum system and shouldn't be used during normal operation. So leave it in the on position. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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05-03-2017, 07:20 PM	#4
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,545	It should be in the on position. You only use the pri position if you need to prime the fuel system say like after changing a fuel filter or any fuel system maintenance. Your fuel system is a closed system because of the epa bs. When your ignition is off there is a vacuum operated valve that shut the fuel off. So no need to shut the fuel off with the petcock like on our hawk or like on the Enforcer you had. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
	3

05-03-2017, 08:05 PM	#6
Azhule Join Date: Dec 2015 Location: CO Posts: 1,525	Nice "new" bike. I see Jerry has it covered __________________ "Think as you like... but this self proclaimed Professor is always right" - Buckshot "You never know what someone is hiding beneath their smile..." - NinjaTom - R.I.P.
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05-03-2017, 11:44 PM	#7
humanbeing Join Date: Mar 2008 Posts: 2,436	__________________ Last edited by humanbeing; 04-12-2018 at 09:01 PM.
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05-03-2017, 06:13 PM	#3
Ski_rush Join Date: Feb 2017 Posts: 449	I've been starting it with the petcock in the ON position. Is it supposed to be on prime? When is the prime position supposed to be used?
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05-03-2017, 07:44 PM	#5
Ski_rush Join Date: Feb 2017 Posts: 449	Thanks, I understand it now.
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