Hello Mark and Grumpy,
Thanks for the ideas about further fault diagnosis.
To start with I checked the float height and didn�t end up making any adjustments to it as it lined up in evenly on the 35degree angle the guy noted in the first video.
I did a bit more reading about this engine and decided to give the idea of lowering the engine revs by 150 and putting the governor spring into the bottom slot (as suggested by Mark).
I re-checked everything to ensure the choke and throttle linkages were operating as they should before I re-assembled the engine.
I didn�t have high hopes that changing the revs would fix the mower but I took it down the end of my suburb for a run in the long grass. The mower performed perfectly. It started easily, it idled fantastically and full speed with nice and smooth, no hunting what so ever!
Mid-range was smooth; any adjustment to the throttle didn�t result in hunting. I re-checked the full speed setting and the choke was completely open and not partially closed like before and it was running absolutely spot on.
The engine didn�t miss a beat after mowing for at least 30 mins in the long grass. The engine was stopped and started on several occasions and I couldn�t fault it.
I had to make some repairs to the catcher as it is slightly different to the normal rover catcher. It has no cracks so it should not be a problem.
This would have to be the most challenging mower so far for me. Here as some photos of the finished product after a good work out. I will clean it up with the compressor and whack it up on my new shelves I put together before Christmas. It helps keep my shed neat and tidy. I don�t have a lot of room so I need to be tidy.
Again guys I really appreciate your help. I hope this thread can be of use to others.



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