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