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?
Tractor won't shift into gear?
Throttle issue?
Lawnmower repair?
Trying to find lawn mower part- Power Devil PDG4037R?
Reassemble Throttle?
Flymo 400 turbo stopped working?
Mountfield empress drive belt?
Belts for old WEBB Mower?
No ignition light?
How to remove roller from lawnmower?
How to recoil the starter spring - Champion R484TR?