While you wait for answers, we may have found some information which could help you.
Success
Message
Mountfield empress drive belt?
Tractor won't shift into gear?
How to recoil the starter spring - Champion R484TR?
Lawnmower repair?
Trying to find lawn mower part- Power Devil PDG4037R?
Flymo 400 turbo stopped working?
How do I trace a Lawn Tractor starting problem?
Throttle issue?
Carburettor?
Bosch al3640 cv?
Reassemble Throttle?
No ignition light?