2007 Evinrude E-Tec 75, 90 HP outboards Service Manual, Page 112Get this manual
SYSTEM ANALYSIS START CIRCUIT
Voltage Testing
Use digital multimeter to check voltagesIdentify all wiring and circuits prior to performing any voltage testsRefer to Wiring Diagrams and descriptions of the various systems for specific information on each circuit
START CIRCUIT
The start circuit provides the required current to the starter motor and associated electrical circuits
Electric Starter Operation
The starter must engage and turn the flywheelA minimum cranking speed of 300 RPM must be achieved for the outboard to startOptimum starter performance is achieved by providing: Proper battery capacity (640CCA) Cables capable of transferring the amperage Low resistance battery and cable connections solenoid capable of switching the current These "high amperage" start circuit components provide the battery current required to crank and start the outboard (electric start models)Check the quality and condition of the following:
55 Circuits