nicknew

hi all i've recently set about the challenge of restoring a yb 100 to somewhere near it's former glory (i'd settle for running) but it's fair to say the bike is in a fairly poor state of repair and i would appreciate some advice along the lines of whether or not this is a non-starter or basically where to begin. have purchased the haynes manual and from a brief look on line i can see all the bits are available one way or another. some photos below and I should mention i also am missing the keys (!) but hey-ho... any feedback / guidance on where to begin would be much appreciated. Nick