Polaris 2005 Sportsman MV7 Service Manual page 106

ENGINE
10. Lubricate connecting rods with 0W--40 engine oil.
11. Install new cylinder gasket on crankcase. Align
gasket on the dowel pins for proper gasket
alignment.
NOTE: Gasket must be installed dry. Do not use
sealers or lubricants to hold in place during
installation.
12. Orientate the piston rings on the piston before
installation into the cylinders. Set the gaps of the
rings every 120° (see illustration).
Piston
Ring
Orientation
1.
TOP RING
3.
3.48
1
2
3
2.
SECOND RING
OIL 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.
Cylinder Installation
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.
Push in Piston Pins
15. Install the piston pin keepers (F). The pin keeper
ends should be installed at the 12 O'clock
position.
Place Pin Keeper (F)
in 12 O'clock position