I'd like to hear some input that would be helpful to those who are first-time moped owners of brand-new Tomos bikes.
I've had occasion to ride several brand new Tomos mopeds with A55 engines, and I also have an '08 LX that I've tuned, but it still all stock components. I had not owned a 2-cycle bike for about 30 years, and my first one (a 65-cc Sears made by Puch) seemed to run good right from the start. Of course, that's what I think I remember.
When I started out with my new LX, I was dismayed with how uneven the power output was . . . surging, and making different sounds, etc. I couldn't believe it the design intent was for it to run like that, and I knew from these forums that a lot of people liked them. As it approached the end of its break-in period, I was noticing that sometimes it ran very well, and other times it ran with the surging, vibration, odd sounds, etc. I had figured out that it was running too rich, so I reduced the airbox restriction. I lowered the carb needle. I got it running pretty good, but then the stock exhaust plugged -- a common problem blamed on the catalytic converter. I put on a new stock exhaust, and was amazed at the improvement, until it also plugged. Then I drilled in with a 12" x 3/8" drill through the exhaust outlet hole, and it seems I've permanently eliminated the plugging problem. NOW the bike runs really well (after I opened up the airbox a little more and did a little carb tweaking). But then I got on a new ST (25 miles on the odometer), and realized that it had all the same symptoms I had seen at first with mine. Tried a new LX, and noticed the same things.
I know the Tomos engine is capable of running very well, but I'm curious what other owners of new ones have experienced, and what advice would be helpful to give new owners to help them minimize frustration.