No, it does not.
No it does not use mixed gas and oil-it is a 4 stroke which runs just like a automotive engine with pressure lubrication. Gas only goes in the gas tank.
nope
Get a solid container for the gas you want to drain. Loosen and remove the fuel line for them petcock below the gas tank. Open the petcock and let the fuel run into the container. If you want to remove the fuel from the carburetor, then you have to remove it and open the bottom half of it.
When a person is driving a car they should know its fuel capacity. The 1983 Honda Civic has a fuel capacity of 41-liter.
3.5 gallons
It should be Inside the gas tank
Four stroke engines use an oil sump, and do not need to have oil mixed into their fuel.
The air filter is under the gas tank
Isn't an Xr80 a four stroke ? If so, there is no mix ratio, if it is a two stroke by some chance, I would say 32 to 1, so 4 oz of oil per gallon of gas.
Bad needle and seat Throttle cable misadjusted
The xr100 uses straight unleaded gasoline. (car gas)
There is no gas gauge on the 1983 Honda v65 magna. However this bike will get around 165 miles on a full tank. The best way to know how much fuel you have is to reset the tripometer on the speedometer each time you fill up, and refill at around 160-165 miles.