This is the Honda Magna 1100, the biggest bike of the VF series. The air filter needs to be changed or cleaned regularly. Remove the seat and the passenger seat. Remove the gas tank, held in place with one bolt. Shut the petcock and remove the fuel line to the tank. When you remove the tank you will see a square black box on top of the carburetors. Unscrew the lid on this box and you can see the air filter. You can use a paper filter, but these may be rather hard to get by now. Many Magna owners have gone over to home-made Polyurethane foam filters, the kind of yellow foam used in chair upholstery. This can be easily obtained and cut into the proper size for the air filter box. Use a small, sharp knife or a pair of scissors. When the foam has been cut to the proper size, you should wet it in thin engine oil mixed with a little gasoline. The you just wring it almost dry. This is to trap the small particles and prevent them going through the filter. This kind of home made filter can only be used in areas that don't have a lot of dust in the air and it must be cleaned or replaced every 1000 km or so. Don't attempt to make your own paper filter as this will probably not saty in place and leave the engine exposed to dust. For very dusty conditions use the original paper based air filter for the Magna made. I have noticed that aluminium air filters for these bikes are now produced in China and sold on E-Bay.
105 horsepower at the rear wheel, as measured by Cycle magazine in 1983.
After oil/oil filter change, add four quarts and then check level as you add the fifth, 4 to 6 oz at a time.
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.
The 1983 v65 magna "Winker cancel unit" or "Cancel unit" or "Turn signal Cancel unit" Honda part number 35220-MB4-005 is located inside the fuse box below the headlight, looks like a small black box about half the size of a deck of playing cards.
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1984 v65 sabre plug gap and NGK Spark PLug and heat range
See related link from Cycle Magazine. 105hp
Ngk dpr8ea-9
In the back of any repair manual.
Clymer 1982 - 1988 Honda V45 & V65 Magna/Sabre repair manual has 0.031 - 0.035 in.