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?
No ignition light?
How to remove roller from lawnmower?
Tractor won't shift into gear?
Carburettor?
Reassemble Throttle?
Throttle issue?
Lawnmower repair?
Mountfield empress drive belt?
Trying to find lawn mower part- Power Devil PDG4037R?
How do I trace a Lawn Tractor starting problem?
Flymo 400 turbo stopped working?