While you wait for answers, we may have found some information which could help you.
Success
Message
How to recoil the starter spring - Champion R484TR?
Tractor won't shift into gear?
Throttle issue?
How do I trace a Lawn Tractor starting problem?
Flymo 400 turbo stopped working?
Reassemble Throttle?
No ignition light?
How to remove roller from lawnmower?
Mountfield empress drive belt?
Lawnmower repair?
Trying to find lawn mower part- Power Devil PDG4037R?
Carburettor?