Page 216 - Manual_Polaris_RZR_ProXP-20-21

ENGINE / COOLING SYSTEM

5. Remove and discard the plain bearings located in the CYLINDER / PISTON REMOVAL
upper crankcase w, connecting rods e, and lower
crankcase r. Replace the crankcase assembly if a IMPORTANT
bearing bore is galled or if bearing inserts have Pistons must be removed from the cylinders with the
rotated in the case. Refer to bearing selection connecting rods attached.
procedures upon assembly. DO NOTattempt to service the cylinder or pistons
without disassembling the crankcase. Although you can
remove the cylinder and pistons without disassembly,
you will not be able to reassemble the engine because
of the unique cylinder skirt and crankcase design.

1. Perform “ENGINE DISASSEMBLY / INSPECTION -
TOP END” and the “ENGINE DISASSEMBLY /
INSPECTION - LOWER END” procedures.
2. Rotate the engine so the cylinder is facing up.
3. Remove the fastener q retaining the knock sensor w
to the cylinder and remove the knock sensor.

4. Remove the Cylinder Holding & Camshaft Timing
Plate (PU-50563) e from the cylinder.
NOTICE
Always replace plain bearings when the crankcase or
connecting rods have been disassembled. Refer to
Crankshaft Main Bearing Selection page 3.79.

3.72 9930583 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual
© Copyright Polaris Industries Inc.