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