Oil Pump Operation And Troubleshooting - Polaris INDY TRAIL RMK Service Manual

ENGINES

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:
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
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:
Inline filter blocked
S
Air not bled from oil pump
S
Feed lines leaking
S
Oil tank vent restricted or kinked
S
Defective pump.
S
3.62
Install new sealing
a drop occurring
Pressed
Apply Pressure Here
To Test
Banjo