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