Crankshaft Runout Inspection; Oil Pump Bleeding; Oil / Fuel Filter - Polaris 2007 Two Stroke Service Manual

MAINTENANCE

Crankshaft Runout Inspection

Crankshaft runout can be checked with the engine in the
machine. Using a dial indicator with the crankshaft holding
fixture (PN 2870569) will yield the most accurate results.
When checking the crankshaft runout on the MAG side. Place
the dial indicator end at 1/2" (12.7mm) from the bearing flat (A).
When checking the crankshaft runout from the PTO side. Place
the dial indicator end where the taper starts after the bearing flat
(B).
NOTE: Acceptable crankshaft runout (in a crank
fixture) is 0 - .0015" (0 - .04mm) on Liberty™
engines. 0 - .0025" (0 - .07mm) on Fuji engines.
3.12
MAG END
A
1/2"(12.7
PTO END
PTO END
B

Oil Pump Bleeding

1. To aid in bleeding the air out of the oil lines, fill oil
reservoir with the appropriate Polaris injector oil. This will
add pressure to the oil lines.
2. Loosen the bleed screw (A). After approximately 30
seconds oil should flow from beneath the screw head. This
will indicate the pump is free of the air.
3. Tighten bleed screw (A) securely.
NOTE: Any time that the engine is disassembled or
repaired, it is important that the oil supply from the
oil pump be checked and full of oil.
IMPORTANT: The oil pump must always be bled
following any service to the oil injection system or
engine.

Oil / Fuel Filter

CAUTION
The in tank fuel filter and fuel lines should be inspected
regularly. Special attention should be given to the fuel
line condition after periods of Summer storage. Normal
deterioration from weather and fuel can occur during this
storage period. Do not damage fuel lines when removing
them. If a fuel line has been damaged or kinked it must
be replaced.
NOTE: The direction of the arrow indicates the
direction of the flow through the filter. After
changing the oil filter, the oil injection system must
be bled of all trapped air. see "Oil Pump Bleeding"
on page 3.12.
A