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?
Bosch al3640 cv?
How do I trace a Lawn Tractor starting problem?
Throttle issue?
Flymo 400 turbo stopped working?
Carburettor?
Mountfield empress drive belt?
Reassemble Throttle?
Lawnmower repair?
No ignition light?
Tractor won't shift into gear?
How to recoil the starter spring - Champion R484TR?