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