Oil Pump Check; Oil Hose Check; Check Valve Check; Oil Pump Air Bleeding - Yamaha WaveRunner VX 700 Service Manual

Oil pump check

• If the oil delivery hoses are not full of oil,
fill them up.
• After installing the oil injection system,
bleed the system of any air.
1. Clean the oil pump, and then check the
oil pump. Replace if damaged or worn.

Oil hose check

• If the oil delivery hoses are not full of oil,
fill them up.
• After installing the oil injection system,
bleed the system of any air.
1. Check the oil hose and oil delivery hose.
Replace if cracked or damaged.

Check valve check

1. Blow into the end a of the check valve,
and make sure that airflow from the end
b is unrestricted. Replace if the airflow is
restricted.
2. Blow into the end b of the check valve,
and make sure that airflow from the end
a is restricted. Replace if the airflow is
unrestricted.

Oil pump air bleeding

Do not run the engine if oil does not flow
out of the air bleed screw. Inspect the oil
hose for proper routing and make sure
there are no restrictions in the line.
1. Place rags around the air bleed screw 1
to catch any oil that might spill.
2. Fill the oil tank with the recommended oil.
Recommended engine oil:
YAMALUBE 2-W, or an equivalent
NMMA-certified TC-W3 marine oil
TIP:
If the oil pump is replaced or the oil delivery
hose is reinstalled, bleed air from the hose by
disconnecting its from the oil pump.
After bleeding the air, reconnect the hose.
3. Loosen the air bleed screw 1 two full
turns and make sure that both oil and air
bubbles flow out.
4. When there are no air bubbles left,
tighten the air bleed screw.
Air bleed screw:
5 N·m (0.5 kgf·m, 3.7 ft·lb)
5. Wipe up any spilt oil.
Oil pump
1
2
1
3
4
5
6
7
8
9
A
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