OILING SYSTEM TESTS
IMPORTANT: Always perform visual inspections to identify oiling system leaks. Make sure the oil tank is filled and oil supply is not contaminated.
Oil Injection Pump Static Test
IMPORTANT: Do NOT perform static tests using Diagnostic Power Supply Tool, P/N 587005, with internal 9 volt batteries only. This will produce false results. Refer to Communication on p. 86.
Use Evinrude Diagnostics software to activate the Oil Injector test. This test starts the EMM control function for the oil injection pump.
The EMM controls the pump by providing ground through pin 23 (blue wire) of the J1-B connector and pin 2 (blue wire) of the oil tank connector.
Static Tests Screen
- Oil injector test button
IMPORTANT: This test is operating the pump with 12 V battery power on the system voltage (55 V) circuit. The oil injection pump will not activate on 12 V.
Use an inductive timing light to monitor current flow through the ground circuit (blue wire) at the oil tank connector (pin 2).
If the light flashes, the EMM and oil injection circuits are not at fault.
Refer to Oil Injection Pump Voltage Test on p. 163.
Oil Injection Pump Voltage Test
Use an appropriate test probe and a digital multimeter calibrated to a scale that reads 55 V (DC). Voltage readings should be approximately 55 V.
Connect negative meter lead to ground.
Connect positive meter lead to pin B (blue wire) of oil injection pump electrical connector.
Start the engine.
Use the Prime Oil System function of Evinrude Diagnostic software Dynamic Test screen to activate the oil pump.
- Voltage at pin B should vary up to 5 volts, as the oil pump cycles.
- If voltage at pin B is not within range, check voltage at pin A of oil tank electrical connector.
- If voltage at pin A is within range, refer to Oil Injection Pump Resistance Test on p. 164.
- No voltage reading at pin A, refer to System Voltage Test on p. 102.
- Oil injection pump electrical connector
Oil Injection Pump Resistance Test
Disconnect the electrical connector from the oil injection pump.
Use a digital multimeter to measure the resistance between the pins of the oil injection pump connector. Calibrate the meter to the LOW OHMS scale.
Oil Injection Pump Circuit Resistance
22 Ω
- Oil injection pump connector
Results:
- An infinite reading (f) indicates an open circuit
of the injection pump winding. Replace faulty
pump.
Oil Injection Pump Function Test
Remove oil distribution hose from fitting at oil distribution manifold. Do not lose the brass hose support.
- Retainer mechanism
Temporarily install a length of oil hose
Start the outboard and observe oil flow:
- Oil flows from hose, compare to oil flow at other distribution fittings
- If one or more fittings fail to flow oil, replace the oil injection pump assembly.
Reinstall hose into manifold.
IMPORTANT: Make sure hose support is in hose and hose is fully inserted into manifold. Refer to Oil Distribution Hoses on p. 166.
Oil Injection Fittings Flow Test
Make sure the oil injection fittings of the cylinder and crankcase assembly allow fluid to move.
Remove oil distribution hose from oil distribution manifold.
Use a Syringe, P/N 346936, filled with isopropyl alcohol to force fluid through hose and fitting
LOW OIL Sending Unit Test
Remove the oil from the oil tank.
Start the outboard. The ignition should be interrupted once per 50 engine revolutions.
If the outboard has been equipped with a dash mounted Engine Monitor system, turn the key switch ON. The LOW OIL light of the warning system gauge should turn on.
Once the warning has been confirmed, refill the oil tank and start the outboard. The LOW OIL warning should stop after the oil pump cycles 3 times.
