Hi NormK, thanks again for that.
I do have a new spare carby that I purchased for testing purposes, so I might try that. It'll also give me an opportunity to double check everything in the old carby.
I'll get back to you with the results. If it resolves it, then it's something in the carby. If it doesn't, then it shouldn't relate to the carby at that point.
While I'm looking into this, I'll take the exhaust off and take a look at that, and I might see if the mower starts up with the exhaust removed, just for testing. It might take a day or two, but I'll get back to you with my findings.
Cheers again for your assistance so far.
