Oil Pump Operation And Troubleshooting - Polaris 2003 Pro X Service Manual

Oil Pump Operation and Troubleshooting

Any time the engine is disassembled or repaired, it is important that the oil supply from the pump to the engine
be checked.
NOTE: Banjo type or pressed in valves should open with 2 to 7 lbs. of pressure. Perform this test with 40:1 premix
in fuel tank.
1. With engine in chassis, oil reservoir full, and pump
bled, remove two oil feed line banjo bolts (A) from
their location on the manifold or carburetors. NOTE:
Install new sealing washers upon installation on
either side of the banjo check valve.
2. Loosely thread only the banjo bolts back into the
manifold or carburetors.
3. Place oil feed lines with their check valves away
from the clutch area. Start the engine and let it idle
at normal idle RPM.
4. Lift oil pump control lever up to its maximum flow
position.
5. Drops of oil should be visible from the banjo check
valves after the engine is idled one to two minutes,
with a drop occurring approximately every few
seconds.
6. If oil does not flow from one of the check valves,
remove oil line from check valve and again idle
engine. If oil then flows, the check valve is defective
and must be replaced.
7. If oil does not flow with check valves removed from
their feed lines, the malfunction is one of the
following:
S Inline filter blocked
S Air not bled from oil pump
S Feed lines leaking
S Oil tank vent restricted or kinked
S
Defective pump.
Pressed
Apply Pressure Here
To Test
ENGINE
Banjo
2.57