This is doing my head in ! ( strange UK saying ) The ultra reliable engine is in my Atco Balmoral 17 inch and for years has been fine until the last couple of days, when there has been no rain in my part of UK, so I thought it the right time to mow my lawns ( not yards ! ) which are decent grass...
Fuel or spark issue. Dump/flush out the fuel tank. Blow out with compressed air. Clean the carbby next. Clean the sparky plug e'. Fire up the tea kettle.