You can get an exploded parts diagram for these on the web ,pretty easy to rebuild, solinoid that you need to replace very easy. Just don't forget to disconnect the battery first.
Well Thursdays past for those of you intrested it's a Maserati Tipo (type) 160, not many people realise Maserati built bikes as well. The biggest surprise with this is that De Tomaso owned the company and did'nt badge engineer a bike. By the way don't look for a book cause none exists I just have an inquisitive mind and stumble across these things.
The Bush's claim to be from outside Falkirk in Scotland, what shame on our nation, apparently his relations were thrown out of Scotland for being too presbiterian, thats even more rightwing than rightwing