While you wait for answers, we may have found some information which could help you.
Click here for John Deere LawnJohn deere z425 54c mower want start?
john deere 120 shuts down when engage mower deck?
Mower won't stay running?
JD lawn mower LT133 wondering if clutch switch could be bad?
John DeereL111 mower deck does not engage. ?
What would cause belt to flip on a pully ?