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