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