While you wait for answers, we may have found some information which could help you.
Success
Message
Flymo 400 turbo stopped working?
Mountfield empress drive belt?
Throttle issue?
How to recoil the starter spring - Champion R484TR?
Flymo 330 turboglide?
Mac Allister 35cm electric lawn mower?
Trying to find lawn mower part- Power Devil PDG4037R?
Lawnmower repair?
How to remove roller from lawnmower?
Belts for old WEBB Mower?
Countax site on mower C300h?
Reassemble Throttle?