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