The Yamaha MF1 50 cc was Yamaha's answer to the rapidly growing Moped market. Like with the SC1 scooter, Yamaha wanted to make a sportier moped.
For a more complete story see also the design article, page 74. Click for article, exit by < "upper left" on your page !
I think this is one of the later MF1's, framenumber is F1-324281, 1961. Apparently this MF1 was purchased by a British Army man in Bangkok or so. Japanese models had only a single seat and luggage carrier.
As you can see it does not look very bad, but the muffler assy is very rusted, rubbers and cables are of course very bad, but what do you expect after close to 50 years! Main item is the missing leg shields and rearlight lens.
(you can click for a large picture of the first photo)
The handlebar levers are missing, speedometer rim is rusted (of course). Will be not very easy to bring it back to its former glory.
Yamaha advertised that the rearlight was the "biggest one" in the business, but mine is missing sadly.
Engine looks okay, even has some compression. Clutch works. But the rest I have to see when we take it to pieces......!