While you wait for answers, we may have found some information which could help you.
Click here for Transmission Remove ReplaceMower won't stay running?
was mowing with john deere lx172 just quit running , dead?
John deere z425 54c mower want start?
John Deere L120 engaging blades kills engine?
john deere js30 won't start?
john deere clicks rapidly but will not start?