188
OILING SYSTEM
OILING SYSTEM TESTS
Oil-to-Fuel Check Valve Test
The oil-to-fuel check valve controls oil that flows
into the outboard fuel system. Oil is injected into
the incoming fuel supply before the fuel lift pump.
IMPORTANT:
Temporarily disconnect fuel sup-
ply hose to relieve pressure in the hose.
Using a marker or pen, mark the position of the oil
hose, relative to the hose retaining mechanism,
before removing hose.
Release the hose by depressing outer ring of the
retaining mechanism.
Remove oil-to-fuel check valve.
Connect a 30 psi (207 kPa) pressure tester to the
inlet side of the check valve. Apply pressure to the
check valve. The check valve should not require
more than 3 psi (21 kPa) to open.
Connect a vacuum tester to the outlet side of the
check valve. Apply vacuum to the check valve.
The valve should not require more than 6 in. Hg to
open.
Install check valve and secure with clamp.
Make sure the hose support is in the distribution
hose and insert oil-to-fuel distribution hose into
check valve to proper depth. Run outboard and
check for leaks. Repair all leaks.
LOW OIL Sending Unit Test
Remove the oil from the oil tank, and turn the key
switch ON. The LOW OIL light of the
System-
Check
gauge should activate. Once the warning
has been verified, turn the key switch ON and refill
the oil tank. Confirm that the LOW OIL warning
stops as the oil level exceeds one-quarter of oil
tank’s capacity.
NO OIL Warning Test
STEP 1
Monitor the voltage on the oil pressure switch cir-
cuit at pin 5 (tan/white wire) of oil tank connector
with outboard running at 1500 RPM.
Use Electrical Test Probe Kit, P/N 342677, and
digital volt meter calibrated to scale that reads
12 V (DC). Connect positive meter lead to pin 5
and negative meter lead to ground.
Voltage reading should be approximately 13 V,
and drop approximately 2 V as oil pressure switch
closes and connects the circuit to ground.
STEP 2
Temporarily disconnect the tan/white wire from the
oil pressure switch connector. Run the outboard at
IDLE. The
SystemCheck
NO OIL warning should
activate (10 seconds),
EMM
LED should light, and
Code 38 should be stored in the
EMM.
Turn the key switch OFF and reconnect tan/white
wire into electrical plug. START the outboard. The
NO OIL warning should not activate.
Results:
•
NO OIL warning activates,
EMM
LED lights, and
Code 38 is stored: the system is functional.
•
NO OIL light activates but the horn does not
sound: faulty horn, horn wiring, or gauge.
•
No warning at all: check electrical circuit
(tan/white wire) for oil pressure switch and oil
tank connector ground circuits.
1.
Check valve
002340
1
1.
Oil tank connector
002384
1
Summary of Contents for E-tec 75 HP
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Page 234: ...234 POWERHEAD POWERHEAD VIEWS Port Dressed Powerhead Starboard Dressed Powerhead ...
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Page 236: ...236 POWERHEAD POWERHEAD VIEWS Rear ...
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