Re: 1997Rude 112 HP SPL
Frank, With the motor running, check the DC voltage at the red wire connected from the VR to the Starter Solenoid. If you have <12VDC there, disconnect the VR from the yellow stator wires and check for continuity (motor not running) across the two yellow wires. There should be continuity, but no continuity to ground. Check the purple wire for +12V at the VR, with the ignition key on. This voltage controls the VR output. if it doesn't have battery voltage, figure out why.
Now start the motor and check for AC voltage across the two yellow wires. Start on a high AC Scale, so you don't blow the meter. if you have AC voltage, the regulator is likely bad.