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