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1983 XV500k fuel petcock (Kansas) (CLOSED)

Have a question about fixing something on a Yamaha Virago XV500? Post it here!

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ViragoJoe
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Re: 1983 XV500k fuel petcock (Kansas)

Post by ViragoJoe » Tue Apr 12, 2022 7:40 am

mnoll2010 wrote:
Sun Apr 10, 2022 5:24 pm
Also, I tried to do a search, but I don't understand the terminology in that search column area. I would like to know just out of curiosity, how the Yamaha Yics system works, and if I replaced the original pet cock Vacuum system with a regular petcock, do I plug off any of the carburetor ports can? Does the YICS system need to be kept intact to control backfires. Can anybody help me with that.
=====================================
mnoll2010,

If you replace a vacuum actuated petcock with just gravity feed. Then yes, you will need to plug that vacuum line hose.

Since your XV500 has YICS (Yamaha Induction Control System). Here is some information that explains what it is:

Yamaha Induction Control System

http://ridersofvision.net/xz550pages/YICS.html
ViragoJoe 🇺🇸
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)


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mnoll2010
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What Virago you Own: 3x 1983 XV500K Virgo
1982 XJ650 Maxim
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1979 YZ250.
1978 YZ460(?)
1981 XT250
1982 XT200. Had to sell to get XV500

Re: 1983 XV500k fuel petcock (Kansas) (CLOSED)

Post by mnoll2010 » Tue Apr 12, 2022 10:19 pm

Ok thank you

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Re: 1983 XV500k fuel petcock (joplin mo)

Post by katdust » Wed Sep 14, 2022 2:21 pm

would this work as a setup without the vacum petcock?
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Re: 1983 XV500k fuel petcock (joplin mo)

Post by ViragoJoe » Wed Sep 14, 2022 3:05 pm

katdust wrote:
Wed Sep 14, 2022 2:21 pm
would this work as a setup without the vacum petcock?
============

katdust,

we dunno. what have you done, care to elaborate?

What do you have installed if you don't have a vacuum petcock installed?

Also, please update your profile with Joplin, Mo.USA and your bike information 1983 XV500.
Thanks, that would help us a great deal!
ViragoJoe 🇺🇸
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)


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Re: 1983 XV500k fuel petcock (Kansas) (CLOSED)

Post by katdust » Wed Sep 14, 2022 3:44 pm

right now I just have a on off petcock and a little fuel tank to test the engine because I got it for 200$ and I don't know what works and doest work. so I blocked off all the vacum lines like you said it the previous coment and im just trying to make sure I did it right. it's my first time working on a bike

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Re: 1983 XV500k fuel petcock (joplin mo)

Post by ViragoJoe » Wed Sep 14, 2022 3:53 pm

katdust wrote:
Wed Sep 14, 2022 3:44 pm
right now I just have a on off petcock and a little fuel tank to test the engine because I got it for 200$ and I don't know what works and doest work. so I blocked off all the vacum lines like you said it the previous coment and im just trying to make sure I did it right. it's my first time working on a bike
============

katdust,

There really isn't much information on '83 XV500's for there was only one year for the U.S. market (1983)

If you don't have a repair manual for your XV500. We do have one in the left side panel for it.
ViragoJoe 🇺🇸
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)


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Re: 1983 XV500k fuel petcock (Kansas) (CLOSED)

Post by katdust » Wed Sep 14, 2022 5:16 pm

so there is a chance blocking off all the vacuum likes won't let the engine rune properly?

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Re: 1983 XV500k fuel petcock (Kansas) (CLOSED)

Post by ViragoJoe » Wed Sep 14, 2022 5:24 pm

katdust wrote:
Wed Sep 14, 2022 5:16 pm
so there is a chance blocking off all the vacuum likes won't let the engine rune properly?
============
katdust,

I'm not sure, so check on this. But, I believe your XV500 has a vacuum operated fuel pump. So it will need a vacuum hook up to pump fuel.
ViragoJoe 🇺🇸
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)


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