3
9850045 R01 - 2020-2021 RANGER 1000 Service Manual
© Copyright Polaris Inc.
3.63
3. Note the piston orientation mark (arrow) located on
top of the piston. Arrow should point toward the
exhaust side.
NOTICE
Orientation arrow is also located on the bottom side of
piston as an additional reference.
4. Carefully compress the piston rings with your fingers
and install the piston assemblies into the cylinder
from the bottom side. Use piston ring compressor
pliers (PV-43570-1) to aid in assembly, if necessary.
NOTICE
Use a slight front to back rocking motion until all rings
are captive in cylinder and past the cylinder sleeve
opening
q
.
5. Rotate the engine so the crankcase to cylinder
mounting surface is facing up.
6. Clean base gasket sealing surface on cylinder and
crankcase to remove all oil and grease.
IMPORTANT
Base gasket and surfaces must be DRY and oil free.
Use care upon assembly to keep oil away.
7. Reinstall dowel pins in crankcase if previously
removed.
8. Install a new cylinder base gasket.
9. Verify piston orientation (arrow pointing toward
exhaust) one last time prior to installation.
10.Carefully place the cylinder and pistons into the upper
crankcase.
11. Install the Cylinder Holding & Camshaft Timing Plate
w
(PU-50563) onto the cylinder. The cylinder holding
tool retains the cylinder and pistons when the engine
is rotated.
12.Install the upper crankcase. Refer to Upper
Crankcase Service page 3.54.
13.Install the cylinder head. Refer to Cylinder Head
Removal and Installation page 3.41
ENGINE / COOLING / EXHAUST
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