The one on my 1989 T/D 90 has I think gone awol. It only starts if I turn on the switch, get out and nudge the blade - after which it works ok until I next try to switch it on.
I suspect I need a new motor but they seem to cost an arm and a leg so I guess I must wait until Old Sodbury or similar next year - but how do I know which is the right replacement -- is there a parts number to identify it and if so where on the motor is it and (not unimportantly!) how much should I pay for it.