Polaris Sportsman 850 - Crankcase (Lower); Oil Pump Disassembly

3.56
5. Remove the water pump drive coupler / retaining bolt
from the flywheel.
• Hold the flywheel using a commercially available strap
wrench.
• Remove the flywheel retaining bolt
t
using the Water
Pump Drive Bolt Tool PA-50995
y
.
NOTE
The flywheel bolt has a LEFT HAND THREAD. Turn
CLOCKWISE to remove.
6. Fully install Flywheel Puller PA-49316 on threads of
flywheel (left hand thread - turn flywheel puller
COUNTERCLOCKWISE to install on flywheel).
7. Hold puller body
u
and tighten center bolt
i
to
remove flywheel.
8. Loosen the twelve outer crankcase bolts
i
evenly 1/
2 turn, then loosen the two longer case bolts
o
, then
the six main crankcase bolts
a
. Remove all the
bolts.
9. Tap lower crankcase in reinforced areas with a soft
faced hammer to loosen, then lift straight upward to
remove.
CRANKCASE (LOWER) / OIL PUMP
DISASSEMBLY
1. Remove oil pump cover plate screws
q
. Note
location of two longer (M6x20) screws
w
for
assembly. These screws secure the pump.
2. Remove three baffle plate screws
e
and plate.
3. Slide pump off mounting boss in crankcase.
4. Visually inspect pump rotors and drive gear for
damage or debris.
NOTE
Replace oil pump as an assembly and pressure relief
valve if debris has entered pump or if pump damage is
evident.
ENGINE / COOLING SYSTEM