I've cleaned the carb, new carb kit, new plug, loosened the exhaust off in case was plugged and still will not iron at top speed. Governor arm etc all move freely. Any help is much appreciated
The throttle is pretty much in the wide open position when it's running. When I move the throttle back it slows to almost stall.what happens if you manually move the throttle on the carburetor while running?
of course, some engines have different top speeds set. Some 3600, some 3200, and on older mowers sometimes 2800.