Ok i have a 2000 yamaha ( F25MSHY) 25HP MANUAL START 4 stroke have done a carb rebuild on it will start idle fine put boat in water can run approx 200 yards at W.O.T. then i will pretty much back down to idle can hit kill switch restart it and will do the same thing but when it does it i dont die or choke out plugs new pull plug wires on either cylinder while running does what it supposed to do i am kinda stumped on this also has a lil light on motor is it supposed to light up when first start it appreciate any advice can get also we use seafoam and non ethanol gas
