Hi all,
I have a 1976 Yamaha 125. When I purchased it the generator/starter didnt work but I could kick start it easily. I took it riding and the battery drained and it died (no charge). I have been working on this part of the bike. The starter part of the assembly now works fine, but I don't know how to tell if the generator assembly is charging. The test I usually perform on the other bikes is to take the positive terminal off the battery and see if the bike dies or keeps running. In the case of the 125 the bike dies. this bike does not seem to have a magneto, but has an inner armature couplewith a stationary assembly with all the wire hookup on it. I purchased some used assembles and now have good brushes and wire connections. I have not changed the inner armature out yet, but everythingt else. the voltage across the battery is aprox 12.5V. How do I determine if the battery is being charged. The lights don't brighten up when revving to higher RPMs. If the battery is not being charged then is the armature the problem?. Looks like I may have to get a special puller for taking it off. Anyway let me know if you can help?
Thanks
Chris