My old Victa "Standard" got cranky over winter a couple of years ago and became very difficult to start. A complete new carby fixed the problem, and it now purrs along from first pull. When I broke my wrist recently I called in a professional mowing man who turned up with a 4-Stroke that invariably ran at about 6000 rpm, in the process filling it's catcher up with as much sand as grass clippings, (we live in the bayside sandbelt.) The Victa two stroke virtually idles in comparison, cuts cleanly and doesn't have to rev it's guts out to mow the lawn or fill the catcher, it's engine having been designed specifically for that job, unlike 4-stroke "off the shelf" industrial motors used in dozens of different applications with no engineering changes!