XV750 carb cleaning part 1

[@williamabaryo3024]

I wanted to thank you for sharing your expertise. I was going crazy trying to find good information in my manual. I did both carburetors with the information and it now idles smoothly at 900 RPM and accelerates and runs smoothly at regular street speeds and highway speeds. Without this video I would never have found the jets that were the problem. The diagrams in manual did not indicate inside under that tube for "choke". Thanks so much.

[@keymaker2k]

Now I can start rebuilding the carbs I pulled out a month ago on a 1990 XV 750, great vid, thanks !

[@crabblike]

Thanks for stopping by, glad I could help.

[@9b8]

@crabblike No worries, I know how it goes. I've since got them done and back on the bike. She runs! Dealing with a lean condition on the rear cylinder (plug is white), but I read that is typical for a V-twin on the rear cylinder. But to be fair, have not had it on the highway to give a true test. The "needle valve chamber" I was referring to is the round housing the needle valve rides in. The schematics call it and the needle valve a "needle valve assly." Just replaced the needle valve and jets.

[@crabblike]

Make sure you carefully inspect all the related hardware also, like the intake boots and gaskets, vacuum and fuel lines, etc. for cracks and good fitment.

[@crabblike]

@MOTOFRANK2 , Version 2 fits '83 920's and '84 & '85 700's and 1000's and take different carb holders than v.1. There are 3 different versions. Version 2 should have green teflon coating on the slides.

[@crabblike]

You're welcome. Thanks for watching and responding.

[@crabblike]

The cap can be pulled by drilling a small hole in the center of it, then use a screw as a 'puller'.

[@crabblike]

@9b8 Sorry I haven't been keeping up, too many hours at work I guess, I'm not sure what you mean by 'needle valve chamber', all I can suggest is try to find a schematic on Mikuni's site.

[@crabblike]

The one with more holes should go to the rear cylinder, as it runs a bit hotter and can handle a richer (higher fuel/air ratio) mixture.

[@9b8]

I have a XV535 with the stock carbs (Mikuni BDS34 I think?) on it. It has been yet another victim of long-term storage with fuel in the bowls. I'm going through it and got a couple rebuild kits which come with the entire needle valve assembly. I can't see how to remove the needle valve chamber from this model carb? And the Clymer manual skips right over this detail. What gives?

[@MOTOFRANK2]

@crabblike ok my friend....then my bike fit the version 2, but some people say that version 1 is better than version 2.....what you think?......in the parts store there is a pair of version 1 hitachis.......wich is the best?.....thank for your help

[@billydavis3263]

How did you take the cap out of the hole to remove the pilot screw. The screw you measured the depth of.

[@hanktharipper10]

Hey I have a 750 yamaha virago and I'm goin to do a reuild kit on it and was wondering if the jets need to be set in a certain specs?

[@MOTOFRANK2]

HELLO MI FRIEND, GREETINGS FROM VENEZUELA...I HAVE A 1985 VIRAGO 750.....MY QUESTION IS, THERE ARE TWO VERSIONS OF HITACHI CARBS FOR VIRAGO?......WHICH BETTER?...I THINK MY BIKE FIT THE VERSION 2 AND I HAVE A LOT OF PROBLEM WITH THEM...BUT I FIND A PARTS STORE WHERE I SAW A PAIR OF HITACHI CARBS THAT I THINK ARE THE VERSION 1..PLEASE HELP ME...THANKS

[@SocialViolence]

Any idea which main jet tube goes in the front carb and which goes in the rear carb? One has more holes in it and I mixed them up during my carb rebuild.

[@crabblike]

Sorry it took so long, I have had a lot of other stuff going on here. I'll look it up and try to find an answer for you. (Unless you already figured it out.) Again, sorry.

[@crabblike]

@21nal Sounds like it's still running lean. Do you have stock exhaust or drag pipes?

[@Harley_Chaos]

nice video helped a lot.

[@crabblike]

@MOTOFRANK2 Its always better to stick with what actually belongs on it. btw, are youre carbs damaged or what is the problem youre having?

[@stevenixon9022]

Is it possible to get a copy of your carb diagram?

[@crabblike]

Steve Nixon the diagram is easily available by doing an image search for. “XV750 carburetor diagram”. Just be aware the year makes a difference because the early ones used Hitachi carbs and others used Mikuni.

[@kimonui]

excellent! thanx for this!

[@crabblike]

It's been so long since I had carbs like this apart, all I can say is it follows the tube from the vacuum chamber down into the carb body. More than that I can't remember, sorry.

[@rotamecanica9842]

the clymer virago 1100 engine tane up overal brazil 👍

[@crabblike]

I'm not sure what you mean.

[@zplexone]

I was gonna post the same thing!