Chrysler 75 and 85 HP Outboards Service Manual OB 3646, Page 79Get this manual
3Spin the distributor pulley to check for coil outputIf spark jumps the gap between the end of the test wire and ground, it indicates you have coil output which means you have problem in the secondary circuit 4If you have no coil output, check the preamplifier output as covered in the next section
PreamplifierTest Equipment: Voltmeter1Disconnect battery leads2Remove distributor cap 3Turn distributor pulley by hand until opening in rotor cup exposes preamplifierFigure 17