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1993 XV750 Vacuum Diagram or advice on what goes where.

Have a question about fixing something on a Yamaha Virago XV750? Post it here!
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HeavensSatans
Posts: 14
Joined: Mon Mar 09, 2020 10:32 am
Location: Denver, Colorado
What Virago you Own: 1993 XV750

Non Viragos -
2000 Honda VLX 600
1982 Suzuki GS750T
1966 Bridgestone BS90
2004 Honda Ruckus

1993 XV750 Vacuum Diagram or advice on what goes where.

Post by HeavensSatans » Mon Mar 09, 2020 10:40 am

Hello All!

After hours of trying to find this on the net I have come here and hopefully one of you wrenchers can help. I recently bought a 93 XV750, $200. Guy had the carbs off. I got them cleaned out, and bought/picked most of the missing parts that were needed. (Alot of time at the scrapyard, with only XV1100s to pick off of).

I am pretty sure I have everything needed now to put it back on the bike. I am no stranger to working on carbs, did my first ones on a 75 honda cb550k. However, the vacuum lines have me confused as well here. Does anyone have a proper diagram on how everything is to be hooked up? I have the manual for the bike, its not much help. The 1100s I was picking off of aren't set up the same as the 750. I have looked all over the net/youtube hoping to find something but no luck. None of my buds have one of these I can look at for reference.

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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
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Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by ViragoJoe » Mon Mar 09, 2020 12:05 pm

HeavensSatans wrote:
Mon Mar 09, 2020 10:40 am
Hello All!

After hours of trying to find this on the net I have come here and hopefully one of you wrenchers can help. I recently bought a 93 XV750, $200. Guy had the carbs off. I got them cleaned out, and bought/picked most of the missing parts that were needed. (Alot of time at the scrapyard, with only XV1100s to pick off of).

I am pretty sure I have everything needed now to put it back on the bike. I am no stranger to working on carbs, did my first ones on a 75 honda cb550k. However, the vacuum lines have me confused as well here. Does anyone have a proper diagram on how everything is to be hooked up? I have the manual for the bike, its not much help. The 1100s I was picking off of aren't set up the same as the 750. I have looked all over the net/youtube hoping to find something but no luck. None of my buds have one of these I can look at for reference.
Below is the A.I.S. Vacuum Line Routing and Air Filter Vacuum Line Routing for an XV750:
Click Images to Enlarge:
A.I.S. Vacuum Line Routing
XV750 VACUUM LINE ROUTING.png

Air Filter Vacuum Line Routing for an XV750:
XV750E AIR FILTER VACUUM LINES.png
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ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

User avatar
HeavensSatans
Posts: 14
Joined: Mon Mar 09, 2020 10:32 am
Location: Denver, Colorado
What Virago you Own: 1993 XV750

Non Viragos -
2000 Honda VLX 600
1982 Suzuki GS750T
1966 Bridgestone BS90
2004 Honda Ruckus

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by HeavensSatans » Mon Mar 09, 2020 12:19 pm

Thanks Joe! I got some insight now, you know anything on how the lines go from the petcock to the carbs and such? All the 1100s I was pulling off of have the reserve tank and not the same set up as mine.

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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
"Never ride faster than your Guardian Angel can fly!!"

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by ViragoJoe » Mon Mar 09, 2020 1:02 pm

HeavensSatans wrote:
Mon Mar 09, 2020 12:19 pm
Thanks Joe! I got some insight now, you know anything on how the lines go from the petcock to the carbs and such? All the 1100s I was pulling off of have the reserve tank and not the same set up as mine.
Click Image to Enlarge
Fuel Hose Routing for XV750:
XV750 FUEL HOUSING ROUTING.png

Read this Article regarding Virago Fuel Systems.
Virago Fuels systems:
https://www.viragohelp.com/virago-fuel-systems/
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ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

User avatar
HeavensSatans
Posts: 14
Joined: Mon Mar 09, 2020 10:32 am
Location: Denver, Colorado
What Virago you Own: 1993 XV750

Non Viragos -
2000 Honda VLX 600
1982 Suzuki GS750T
1966 Bridgestone BS90
2004 Honda Ruckus

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by HeavensSatans » Tue Mar 10, 2020 10:10 am

Sweet, this is much more helpful than what I was working with. Got a good idea of where everything is suppose to be. I got my last bit of parts coming in later this week. 2 boot bolts and 2 seat bolts. Will be putting everything together this weekend, and firing her up. Will keep ya updated.

User avatar
HeavensSatans
Posts: 14
Joined: Mon Mar 09, 2020 10:32 am
Location: Denver, Colorado
What Virago you Own: 1993 XV750

Non Viragos -
2000 Honda VLX 600
1982 Suzuki GS750T
1966 Bridgestone BS90
2004 Honda Ruckus

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by HeavensSatans » Mon Mar 16, 2020 9:41 am

So we got good news and bad news. The good news is all the info provided worked, and I got it all back together. The bad news is, I didn't get one of the o rings on the carb boots set correctly so big air leak, gotta go back in and redo that. Probally a good thing anyway as when I got outside this morn to head to work, I noticed all the gas on the engine block. Carb rebuild instead of clean is next.

On those o-rings for the boots though. Is it possible to use some gasket maker to set those things on the boots before installation? That way they don't move around?

Edit:
Also, holy hell these were not easy to get in at all. I spent a good 5 hours yesterday getting it in! Hopefully next time now that I know where things go and what to use to get that one bolt on the back end in it will go quicker!

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ViragoJoe
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Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by ViragoJoe » Mon Mar 16, 2020 10:27 am

HeavensSatans wrote:
Mon Mar 16, 2020 9:41 am
So we got good news and bad news. The good news is all the info provided worked, and I got it all back together. The bad news is, I didn't get one of the o rings on the carb boots set correctly so big air leak, gotta go back in and redo that. Probably a good thing anyway as when I got outside this morn to head to work, I noticed all the gas on the engine block. Carb rebuild instead of clean is next.

On those o-rings for the boots though. Is it possible to use some gasket maker to set those things on the boots before installation? That way they don't move around?

Edit:
Also, holy hell these were not easy to get in at all. I spent a good 5 hours yesterday getting it in! Hopefully next time now that I know where things go and what to use to get that one bolt on the back end in it will go quicker!
This should help and assist you in getting the carburetors on and off more easily:
https://www.youtube.com/watch?v=L9TZOLgop3I

As for the O-rings. You are the first I've heard having a problem with them. But notice in the video above at timing mark 8:22 there is a flat flange gasket on the boot over the O-ring. He may have added that gasket, but it would eliminate your issue of the O-rings coming out of their seats or it can completely eliminating them. Your call here on how you want to approach this.

He is a screen shot of that video at 8:22 time mark:
Click Image to Enlarge:
XV CARBURETOR BOOT FLANGE GASKET.png
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ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

User avatar
HeavensSatans
Posts: 14
Joined: Mon Mar 09, 2020 10:32 am
Location: Denver, Colorado
What Virago you Own: 1993 XV750

Non Viragos -
2000 Honda VLX 600
1982 Suzuki GS750T
1966 Bridgestone BS90
2004 Honda Ruckus

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by HeavensSatans » Mon Mar 16, 2020 11:22 am

The more I think about it, the more I think they sent the wrong o-rings with the carb boots. Been looking at some of the other aftermarket boots (i got mine on amazon) and it seems to be a common issue. Would make sense as why they did not stay where they were suppose to . I will check into that gasket. May make my life much easier! Thanks for the info!

User avatar
HeavensSatans
Posts: 14
Joined: Mon Mar 09, 2020 10:32 am
Location: Denver, Colorado
What Virago you Own: 1993 XV750

Non Viragos -
2000 Honda VLX 600
1982 Suzuki GS750T
1966 Bridgestone BS90
2004 Honda Ruckus

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by HeavensSatans » Mon Mar 16, 2020 11:25 am

I noticed on that viddy he has both vac lines attached to the carb boots. I only have one attached as per the diagram provided. Which one is correct?

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ViragoJoe
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What Virago you Own: 1996 Virago Special XV1100SH
"Never ride faster than your Guardian Angel can fly!!"

Re: 1993 XV750 Vacuum Diagram or advice on what goes where.

Post by ViragoJoe » Mon Mar 16, 2020 11:59 am

HeavensSatans wrote:
Mon Mar 16, 2020 11:25 am
I noticed on that viddy he has both vac lines attached to the carb boots. I only have one attached as per the diagram provided. Which one is correct?
Do both carb boots have a brass port?

If you only have one connected. What have you done with the other one? Is it left uncovered?

They should both be connected to the vacuum system.

What do your boots look like, please explain.
ViragoJoe
1996 XV1100SH Virago Special
"Never ride faster than your Guardian Angel can fly!!"
;)

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