The cut-off design is just so dodgy and depends on the rotor to move the +ve pin so that it bends and touches the ground pin. A hit or miss solution really. The thing should have had a simple cut-off switch from the very beginning. Who knows what the engineers were thinking, but maybe the bean-counters were not going to spring for a switch mechanism? In the end, their solution was a design flaw and a potential safety hazard.
Having said that, I didn't have this issue on my previous Victa 2-stroke, but I admit that I never needed to service the carby on that one. This mower was used by my daughter and is an older model that I picked up 2nd hand, and other than this issue, has always been a good performer and been reliable. So it does still get a tick for that!
