When did the Yamaha Virago Hitachi carburetors come out?
In French it means: “Don’t mess with me”.) The first Viragos to hit our shores in 1981 had Virago Hitachi carburetors on them and this make of carb lasted on the larger displacement (700, 750, 920, 1000, and 1100cc) models through the 1987 model year.
What to do if float valve on Virago goes out?
If your carbs flood on the “prime” setting, your float valves are sticking. Tap your carbs a little to see if the problem clears. Otherwise, replace your float valves. From ’84 on, the bigger Viragos have venting pipes with “rollover valves” in them to prevent fuel from flowing out in the event the bike goes over.
What kind of fuel system does a Viragos have?
Viragos and RH, RJ chain drive models offered from ’81 to’83 have a gravity feed system. The fuel runs down hill from the tank through fuel lines to the carbs. Some models have one petcock and some two, but the method is the same. One petcock just requires a splitter and two pipes to feed the carbs. The petcocks are vacuum operated petcocks.
Is there a problem with my Virago XJ750 carb?
And if you use B-12 to clean the slides, the diaphragms are not removable and B-12 will eat a hole really quick, so use care to clean them. Also check under the needle and seat, there is a filter screen that might be clogged with crap. Hard to get parts for those carbs so be careful with the parts you have.
Viragos and RH, RJ chain drive models offered from ’81 to’83 have a gravity feed system. The fuel runs down hill from the tank through fuel lines to the carbs. Some models have one petcock and some two, but the method is the same. One petcock just requires a splitter and two pipes to feed the carbs. The petcocks are vacuum operated petcocks.
In French it means: “Don’t mess with me”.) The first Viragos to hit our shores in 1981 had Virago Hitachi carburetors on them and this make of carb lasted on the larger displacement (700, 750, 920, 1000, and 1100cc) models through the 1987 model year.
If your carbs flood on the “prime” setting, your float valves are sticking. Tap your carbs a little to see if the problem clears. Otherwise, replace your float valves. From ’84 on, the bigger Viragos have venting pipes with “rollover valves” in them to prevent fuel from flowing out in the event the bike goes over.
And if you use B-12 to clean the slides, the diaphragms are not removable and B-12 will eat a hole really quick, so use care to clean them. Also check under the needle and seat, there is a filter screen that might be clogged with crap. Hard to get parts for those carbs so be careful with the parts you have.
How does a carburetor work on a virago?
Open the intake valve, and new air will rush in to fill this vacuum. Throw a carburetor in that path and the descending piston “sucks” air through the carb as well. And that’s how we get a flow of air through the carb to work with.
What to use to clean a Yamaha Virago carb?
Use cleaner and a toothbrush for tough areas. You can also use compressed air during this cleaning step if you want. Reinstall the jets into the carb body that it came out of once they are both cleaned. Install new float bowl gaskets as you put the carburetor back into the Yamaha.
What’s the mixture control valve on a virago?
Of course, being red-blooded motorcycyle mechanics we are not that easily discouraged, and where there is a will there is usually a way. While I’m at it I might mention changes in the smog equipment. Through 1985 all Viragos (750, 920, 700, and 1000 models) had a gizmo on them called a “ mixture control valve “.
What do you need to know about Virago carburetors?
If they haven’t, you’ll need to do this. The technique is to drill a hole in them, insert a small screw, and wrestle them out. BE CAREFUL!!. These plugs are roughly 3mm thick, and your drill can get sucked through the soft brass as it exits, and bugger the heads of the adjustment screws, which lie just underneath the plugs!
Of course, being red-blooded motorcycyle mechanics we are not that easily discouraged, and where there is a will there is usually a way. While I’m at it I might mention changes in the smog equipment. Through 1985 all Viragos (750, 920, 700, and 1000 models) had a gizmo on them called a “ mixture control valve “.
How does a virago Hitachi choke circuit work?
On removing the top and pulling out the diaphragm/slide you see a tube running across down below. This tube provides an air supply to the choke circuit and is held in place by a plug which can be removed with a 6mm Allen wrench.
What kind of carburetor does a Mikuni Virago use?
* Mikunis will mount up to pre 1988 700, 750, 920, 1000, and 1100 Viragos, and from 1983 on will share the same carb holder stubs. Some rejetting may be required to get the engine to run at its best.
Why does my Yamaha Virago keep losing power?
Once the bike is back in use, the sludge-clogged components interfere with the fuel’s bath, and the bike is “starved” of fuel. This causes the motorcycle to sputter and jerk while riding. If the fuel supply has been restricted severely, the bike may lose power completely. Another hidden culprit of poor performance on a Virago is rust.
How old is the Yamaha Virago 920 engine?
1982 Yamaha Virago , 1982 Yamaha Virago XV920j, 920cc engine, classic Japanese standard cruiser with a lot of power. Runs well and the whole thing is in pretty good shape for a 32 year old bike.
Use cleaner and a toothbrush for tough areas. You can also use compressed air during this cleaning step if you want. Reinstall the jets into the carb body that it came out of once they are both cleaned. Install new float bowl gaskets as you put the carburetor back into the Yamaha.
How big is the fuel tank on a Yamaha Virago?
The Yamaha Virago’s reputation as a trusty cruiser is sometimes hampered by its dismal fuel holding capacity, particularly for the Virago 535, a small 12-liter tank. Virago owners are often reluctant to take long-distance moto-trips on their Virago; the tank only lasts only about 100 miles.
Where are the pilot outlets on a virago carburetor?
These carbs also had two separate pilot circuit outlets into the bore. One is called the “pilot outlet”. It lies in the bore on the engine side of the butterfly valve. The flow of mixture from this outlet can be regulated by means of adjusting the pliot adjustment screw.
How big is the engine in a virago?
Virago Specifications Engine oil With Filter Change 3.3 qts (3,100 cc) Without Filter Change 3.2 qts (3,000 cc) Engine Rebuild 3.8 qts (3,600 cc) Front Forks
If they haven’t, you’ll need to do this. The technique is to drill a hole in them, insert a small screw, and wrestle them out. BE CAREFUL!!. These plugs are roughly 3mm thick, and your drill can get sucked through the soft brass as it exits, and bugger the heads of the adjustment screws, which lie just underneath the plugs!
What are the Gulp valves on a virago?
Through 1985 all Viragos (750, 920, 700, and 1000 models) had a gizmo on them called a “ mixture control valve “. These “gulp valves” were intended to correct a very short period of richness which supposedly occurs when you shut down the throttle suddenly and droplets of fuel are sucked off the intake walls.
What kind of carburetor does a Yamaha Virago use?
Set of 2 BRAND NEW Aftermarket Yamaha Virago Carburetor Diaphragm XV700 XV750 XV920 XV1000 XV1100 models made between 1981 and 1988 with HSC40 HITACHI Carburetor (only the rubber parts). Please, be sure the carburetor you buy these for is HITACHI HSC40 to avoid further issues.
When did Virago Hitachi version 1 carb come out?
It provides more fuel as the butterfly opens and a greater airstream moves across it. The Version 1 carbs were used in 750’s through 1983, and 920’s through ’82. However, for 920’s things changed in 1983 and what I will call Version 2, was introduced. This carb has different shaped float bowls from Version 1.
Where is the carburetor located on a virago motorcycle?
On Virago motorcycles the carburetor is mounted between two cylinders of V-twin engine. Smaller Virago models xv125 and xv250 do have one shared carburetor providing the same mixture for two cylinders while bigger models, from xv400 upwards, do have blocks of two carburetors, one carburetor per each cylinder.
Where can I buy aftermarket Yamaha Virago parts?
Outfit your Yamaha Virago with the best OEM and aftermarket parts from BikeBandit.com. Your Yamaha Virago is truly a classic, a V-twin machine that helped set industry standards for looks, agility and smooth riding. You can still easily find Yamaha Virago aftermarket mods and OEM components, but you’re here at BikeBandit.com for a reason.
Why is a downdraft carburetor used in a Yamaha Virago?
Downdraft – operates with lower air velocities and larger passages. This is because gravity assists the air-fuel mixture flow to the cylinder. The downdraft carburetor can provide large volumes of fuel when needed for high speed and high power output.
How to Rejet a 1997 Yamaha Virago XV1100?
Adjusting float height, rejetting, and pilot screw adjustment on 1997 Yamaha Virago XV1100 Mikuni motorcycle carburetors. Same as models 1987-1999 Update: After reinstalling the carburetors you should synchronize them. It is also important to check the boot connections from the carburetors to the intake and to the heads.
Is the Yamaha Virago still in the aftermarket?
Your Yamaha Virago is truly a classic, a V-twin machine that helped set industry standards for looks, agility and smooth riding. You can still easily find Yamaha Virago aftermarket mods and OEM components, but you’re here at BikeBandit.com for a reason.
How much does a 1982 Yamaha Virago cost?
1982 Yamaha Virago 750, WORKING ON IT RIGHT NOW, THIS VEHICLE DOES RUN, BATTERY WENT UP, THE REST IS JUST MAINTENNANCE $2,000.00 2536255098 1982 Yamaha Virago 750, I don’t have a lot of information on this bike but here is what I know… Just over 2 years ago my son-in-law was moving and no longer needed it for transportation to and from work.
Is the single carb better on a virago?
But the single carb has a nice simplicity to it, is much easier to remove and replace for jetting changes, and hopefully would retain the strong, peppy, usable power of the ’85 1000 Virago that I was working with, and which was probably putting out horsepower and torque in the 50-60 hp/fp range.
How big should a virago Tuner be filled with oil?
Fill with oil to about the 26 or 27 inch mark (36 at the bottom). You may have to leave the unit sit for a day or so to get all the bubbles out.
How to Rev A viragotech to 4000rpm?
You’ll most likely need to remove the rear carb breather pipe to get to the screw, and move the tank up out of the way a bit using the 30mm socker works great if you have one. Once you get to it, it is usually quite simple to rev the bike to 3-4000rpm, hold it there, and check your synch.