Polaris MS4000 Service And Owner's Manual page 425

NOTE: Always replace the camshaft and lifters as a
set.
10. Lubricate connecting rods with 2W-50 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).
Piston Ring
Orientation
1. Top Ring
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.
ENGINE
1
2
3
2. Second Ring
3. Oil Ring
3.47
3