Evinrude E-tec 75 HP, Service Manual

Page: 186 / 344

186
OILING SYSTEM
OILING SYSTEM TESTS
Oil Injection Pump Circuit
Resistance Test
Disconnect the battery cables at the battery.
Disconnect oil tank electrical connector from
engine wire harness connector
.
Calibrate ohmmeter to the LOW OHMS scale and
measure the resistance between pin 1 and 2 of
the oil tank connector.
Results:
•
If injection pump resistance reading is approxi-
mately 22
Ω
, injection pump winding is good.
•
An infinite reading (
∞
) indicates an open circuit.
Isolate the faulty wiring, connection, or injection
pump winding. Repair faulty wiring or replace oil
tank assembly for faulty pump.
•
For higher than expected reading, isolate faulty
component or repair faulty wiring.
IMPORTANT:
The oil injection pump electrical
circuit includes
EMM
alternator output, the engine
wire harness, the injection pump winding and con-
nectors, and the oil injector control circuit of the
EMM
. Check continuity of all wiring and connec-
tions.
Oil Flow Tests
Running
With outboard not running, remove oil distribution
hose from fitting at oil distribution manifold. Do not
lose the brass hose support. Allow oil in hose to
drain, allowing air to enter the hose.
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. 189. Tem-
porarily disconnect the fuel supply hose to relieve
pressure in fuel supply hose to allow the oil-to-fuel
distribution hose to prime. All clear “blue” oil distri-
bution hoses on the powerhead should fill with oil
as the air is purged from the lines.
Run the outboard at 1500 RPM. Monitor air bub-
bles in oil distribution hose(s) to confirm oil move-
ment. Once oil movement is confirmed, use the
Evinrude
Diagnostics Software program to initiate
the “Prime Oil“ function.
Oil Injection Pump Resistance
22
Ω
002378
1. Oil distribution hose
2. Hose support
002362
1. Air bubbles
002361
2
1
1