Spent a good hour trying to get me petrol tiller going today, stripped it down, cleaned etc and it just don't wanna play.
Had similar issue with my owd strimmer.
Gone and bought a 240v tiller, plug in and a way we go, so much easier.
Bought cordless Dewalt strimmer couple of years and not looked back so thought I need something that will do the job without the hassle.
As my plot is directly behind the house I can just plug in to my supply. Job done in 5 mins.