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Hello all I've just received back the very V50M I used to use when I was 16 - I'm 51 now! It was my mums before she could drive, then my dad's commuter, then I used it to do my paper round on and then my brother used it when I could drive. It sat in my dad's garage for about 25 years before giving it to a friend's son. After more years, friend's son now works for Triumph testing new bikes on track in Spain so poor V50 now a tad overlooked. Anyway, I was asked if I wanted it back as a resto project. Yippee - time to revisit my 16 year old self. So, I've been doing a bit of a "rolling restoration" on it - not much point spending too much time and money if it's knackered. Some success and it's running now, but I've got a bit of an electrical problem that is driving me nuts. Basically you can start the moped without the key and when it's running (with or without the key) the key won't turn it off. The ignition switch is working as the neutral light comes on and the key turns the running light and headlight on and all other electrics work fine. I've tried to decipher the manual wiring diagram and fumble about with my multi-meter but I'm not sure what to test or to look for. Any help from you guys would be very much appreciated. I have seen another chap has restored the exact same bike on here and it looks great. Here is a picture - it was a green version until friend's son painted it grey.

Still couldn’t get it to run. Compression seemed low and not pulling fuel. Stripped down top end and some nicks in piston ring, but no barrel scoring. Exhaust port had rough edge. That is now dressed and new piston, rings and gaskets on order. Hope this finally sorts it