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On returning from an enjoyable ride I experienced an interesting problem; the bike would not start on the button; the starter motor just spun up making a nasty grinding noise. No attempt to crank the engine.

When I got the bike home I initially believed the problem was the starter clutch but I had replaced it last year. However stripped the bike down, starter clutch was fine and all looked good and functioned back to the short nose starter. I removed the starter motor which I found to be locked solid. On dismantling the starter I found that the pins which hold the planetary reduction gears had been grinding against the inside face of the back plate to the gearbox and that the splines on the armature shaft which drive the planetary gears had been stripped at the contact area, leaving both ends of the splines in place. Has any one experienced similar or know of a possible source of a replacement. Strangely I have never been able to
Kick start the bike but during the morning after the failure I managed to kick start it twice; however I’ve not managed to repeat the process successfully! Any tips?

Many thanks for any help

If I get it right, there is serious damage at the motor gear shaft. It might help to have a photo- anyway if this is true a replacement starter engine is needed.

Kind regards

Joachim H.

By experience the Forum member "TheVerve" is a good source for used spare parts. Let me recommend to get in contact with him.

Hi, forgottenId posted this. I sent the motor to a starter specialist in London who could not explain what had occurred to strip the splines or reproduce the motor due to lack of replacement armature . I eventually replaced with a used Nordwest starter which has functioned perfectly since.