Anyway, I was assuming it would be something obvious like a plastic gear stripped ... but as it is all the gears and worms are fine .
What I have noticed is the silver steel gear on the end of the odometer barrels spins freely on its shaft ... so this appears to be where it’s failed. I can rotate it and it clicks the numbers over but is turns independent of its drive shaft.
Before I rip it all apart and cause damage ... anyone know how this part locks to its shaft ?

I’ll be honest ... at this stage thinking of sending it to a professional to get repaired like reep


