Key Switch, START Position
Key switch START:
- Switches 12 V to terminal “S” of key switch and to the neutral safety switch (in remote control).
- A closed neutral safety switch provides 12 V to the engine wire harness yellow/red wire and solenoid (terminal “A”).
- Ignition switch, START position – Continuity between terminals “B” and “A”; “B” and “S”
- Terminal “S”, 12 V
- Neutral safety switch
ELECTRIC START TESTS
Starter Solenoid Test
Disconnect the B+ (POS) battery cable at the battery.
IMPORTANT: Disconnect all wiring from solenoid terminals before proceeding with this test.
Use a digital multimeter to measure resistance.
Put one meter lead on the starter positive (+) cable terminal and the other lead on the battery positive (+) cable terminal:
- Meter must not show continuity (high reading).
- If meter shows continuity (low reading), replace the solenoid.
- Battery positive cable (B+) terminal
- Starter positive (+) cable terminal
- “A” terminal (yellow/red)
- “B” terminal (black)
Apply B+ to terminal “A” of solenoid and ground (NEG) to terminal “B” of solenoid. Measure resistance between the starter positive (+) cable terminal and the positive battery (+) cable terminal.
- The solenoid must close with an audible click.
- Meter must show continuity (low reading).
- If meter shows no continuity (high reading), replace the solenoid.
After re-installing the solenoid, coat all wires and terminals with Black Neoprene Dip.
Starter Voltage Drop Test
To prevent accidental starting of outboard, disconnect crankshaft position sensor (CPS).
Use a digital voltmeter to measure the voltage drop on each section of the start circuit.
If any voltage reading is greater than 0.5 VDC check that connections are clean, tight and free of corrosion. Clean or replace any corroded or damaged cables or connections.
STEP 1: Connect voltmeter positive (+) lead to the terminal for the negative (–) battery cable at powerhead. Connect voltmeter negative (–) lead to negative (–) battery post.
- Activate starter motor and observe voltage reading.
- Negative battery cable
- Positive battery cable
- Solenoid
- Starter cable
STEP 2: Connect positive (+) lead to battery positive (+) terminal. Connect negative (–) lead to starter solenoid terminal.
- Activate starter motor and observe voltage reading.
STEP 3: First, activate starter motor . Connect positive (+) lead to starter solenoid terminal. Connect negative (–) lead to opposite starter solenoid terminal.
- Observe voltage reading.
STEP 4: Connect positive (+) lead to starter cable of solenoid terminal. Connect negative (–) lead to starter motor terminal.
- Activate starter motor and observe voltage reading.
No Load Current Draw Test
Securely fasten starter in a vise or suitable fixture before proceeding with this check.
Use a battery rated at 500 CCA (60 amp-hr) or higher that is in good condition and fully charged.
Use an inductive ammeter or connect a 0 to 10 0 amp ammeter in series with a heavy jumper between the battery positive (+) terminal and the starter positive (+) terminal.
Fluke model 33 4 or 336, Snap-On model MT110 or EETA501, and various other ammeters should be available through local tool suppliers.
Attach or hold a vibration tachometer, such as a Frahm† Reed tachometer, to the starter.
Complete the circuit with a heavy jumper between the battery negative (–) terminal and the starter frame.
Monitor the starter RPM and current draw.
- At 10 ,500 RPM the ammeter should show a maximum of 30 A.
