Thankyou Grumpy and Paul foot , this has bee an excellent thread for me as I have one of these mowers from bunnings and as it turns out after about three mows it to had similar issues. Mine would never idle after I washed the blades through the base hose outlet and went to turn it down to an idle . It sounded as if it missfired anthen cut out,ever since this happened it never ran quite right and so after following this thread it had me thinking so I had to have a look . It just so happened the belt was out by a tooth. Now the honda runs like brand new and only took ten minutes cheers and thankyou .