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