Will it run? Yamaha Inverter generator was surging now doesn't start? Can we save it or is it scrap

Yamaha iEF2800I Inverter generator that doesn't start and has had problems with hunting and surging. I go through diagnosing problems with this Yamaha inverter generator and finally fix all the problems.
Do you have a generator that doesn't run? You should check out this video to help you fault find and fix a rough running engine.
I purchased this inverter generator from a Auction House for around $200 AUD. It was listed as "SUITABLE FOR PARTS ONLY" I was taking a risk but being a Yamaha Inverter Generator I thought I would give it a try as all parts were on the machine. It only cost me my time to fix, so it was close to $0.
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