larry parker

[larry parker]

hi,my 70hp yahama two stroke, brakes down after runing for aprox 40 minutes,the more weight on board,the sooner it brake down.i have had new spark plugs and the carburetors overhauld plus new fuel line.

[boats.net]

Do a compression test, check for spark at plugs when shuts off, try pumping fuel primer bulb to see if keep it running.