I have a Motobecane Cady of unknown year. It looks a lot like the 3 pics below, which range from 1972 to 1980.
It has no power and can't keep a 90 pound person at speed. I've cleaned the carb, changed the plug. Now I'm down to the breaker point and timing adjustment and this is the problem:
According to the service manual, you attach an ohmmeter to the grey wire that goes from the stator to the coil, and one to the ground, and you set the timing that way. Unfortunately, I'm getting a closed circuit measuring this way. Ie. the ohmeter always indicates closed circuit, no matter what the breaker point position (contacting or not). So I can't set the timing this way. Even when I put the probes on the 2 breaker points themselves(see pic), it shows a closed circuit.
The manual says that mopeds made after 1978 use a 12 volt system, and it also says that you can't use an ohmmeter for these -- you have to use a timing light tester that motobecane supplies. Maybe this moped is post 1978, and maybe I need an alternate method of adjusting timing. I don't have a timing light.
Does anyone out there know if what I've indicated above is a serious electrical problem, or do I need an alternate method of testing when breaker contact is being made? Any help would be appreciated.