Ok, my Granddad just gave me his Mckee Craft with a 40hp yamaha tlra motor. This motor is less than 5 years old and has not been used much at all. It set up for more than a year. It cranked and idled easily but would not rev up. Lots of fuel is leaking out of the bottom carb. What can cause this? The motor ran like a champ the last time it was used.
