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How do I check out the rectifier and charge coil on my 2000 Yamaha F100 4 stroke? The motor will run, but is not putting out any voltage to charge the battery.
My dad has a '99 or '00 model 100hp 4-stroke Yamaha. His battery would not stay charged, he thought it was bad (5 years old anyway) so he bought and installed a new one. After using the boat for about a day, the fishfinder gave him a "low voltage alarm" at 10.5 volts. Later, while a 3/4 throttle...