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ENGINE
3
9923142 - 2011 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2010 Polaris Sales Inc.
10. Lubricate connecting rods with PS-4 PLUS synthetic
engine oil.
11. Install new cylinder gasket on crankcase. Align gasket on
the dowel pins for proper gasket alignment.
12. Orientate the piston rings on the piston before installation
into the cylinders. Set the gaps of the rings every 120° (see
illustration below).
13. Install piston assemblies into cylinder aligning the piston
pin holes, to ensure proper alignment of the pistons to the
connecting rods upon assembly. Partially install the piston
pins into the pistons.
NOTE: To help align the pistons, slide a rod that is
close to the same diameter as the wrist pin holes to
properly align them in the cylinder.
14. Position cylinder and piston assemblies onto the connecting
rods and push the piston pins through the piston and
connecting rods.
15. Install the piston pin circlips. The circlip ends should be
installed at the 12 O'clock position.
Piston Ring
Orientation
1
2
3
1. Top Ring
2. Second Ring
3. Oil Ring
Push in Piston Pins
Piston Pin Cirlcip in
12 O’clock position