Simple; wrong ignition timing! That, or worse; valves not shutting as they should. ---
1990 Yamaha Virago 750 is 55 hp.
The drain plug on a 1981 Virago 750 on the underneath part of the radiator. You will need to remove a bolt to drain it.
RECENTLY CHANGED MY 1981 750 VIRAGO. TOOK 3 QUARTS OF SYNTHETIC MOTORCYCLE OIL
Hi: The oil capacite for the 750 Virago is 3.3 quarts with filter or 3.2 quarts with out Frank;
2 to 1
tire psi
The fuel tank on the 1987 Yamaha Virago 750 holds about 2.3 gallons of gas. This bike is a cruiser with an air cooled four stroke engine.
http://www.ravensroads.com/xv1000-virago-timing-front-camshaft/ Here is the answer to the question. It is on a 1000 but the timing is the same.
The oil capacity for a 1989 Yamaha Virago XV-750 is 13.4 ounces. This motorcycle gets 45.2 miles per gallon, and its top speed is 108.7 mph.
Unburned fuel in the exhaust system causes the backfire from the exhaust pipe.
I get 45-52 depending on how I am driving.
oil level light