I just picked up a Puch Magnum MKII, and I came up w/ a few questions...
1) Is it correct that the air box has nothing to screen out particles except those screens (i.e. no foam or paper filter)? Is that adequate protection?
2) Does 2-stroke oil go bad? This Puch has automatic oil injection, and the oil tank is huge. There's about a quart in there from 1983 that I should probably dump out. But there's also a minimum level (also about 1 quart) that'll take me ages to burn through.
3) Is auto oil injection trusted? When I mix myself, I know what's going on. But if the oil injector goes, that's an expensive engine rebuild project. So how do I know the oil injector's functioning and injecting the correct amount of oil?