Bôsô panikku: Daigekitotsu
It is a Honda CB 250 or 350 twin. Hard to tell from this angle whether it has a disc or drum front brake.
I think because it is red it is a 1972 350.
Different ones? To choose then. Honda CB450 Police Special ? Link to "www.motorcycleclassics.com" I think they are 350s. There is no sign of the double ohc set up. May even be older 250's. I see drum brakes instead of discs.
Tthe 350 used drum brakes until about 1972.
(And I wouldn't classify it a scooter. A moped, like the others on the db, yes.)
Perhaps the same one: EDIT: And as different bike in different scene (moved here from own page) : Similar one perhaps (on the left): This is a 1972 model bike - either a 250cc DS7 or a 350cc R5. If there is a shot which shows the side panel close up where we can distinguish between a 2 and a 3 we can be more sure. @nzcarnerd - I will take a look if it is visible. One question - under this pic with marked white-green bike: You wrote: 1975 was a typo? Yes a typo, meant 1972.
Yamaha YZ 250 from early to mid 70s. All components and also colour do match: http://www.cyclechaos.com/images/5/5f/1975-Yamaha-YZ250-Yellow-224-1.jpg