Page 181 - Manual Oficina Polaris Sportsman 570 2014 a 2016

ENGINE / COOLING SYSTEM

4. Verify all ring end gaps are correctly located on the 2. Install a new piston circlip into the MAG (stator) side
piston. Place cam chain and guides in alignment with of piston with the gap at the 12:00 position.
chain tunnel.
NOTE
5. Carefully compress rings with fingers and install
cylinder with a slight front to back rocking motion An arrow mark denotes the MAG (stator) side of the
until all rings are captive in cylinder and past the piston.
taper of the sleeve.
6. Push cylinder q downward until fully seated on base
gasket.
3

3. Verify all ring gaps are correctly located on the piston.
7. Hold the cylinder in place and rotate the engine and 4. Carefully install the Piston Ring Band (PA-51457)
position the piston at TDC. around all of the rings on the piston. Secure the band
with the Compressor Pliers (PV-43570–1).
NOTE
If cam chain and flywheel are installed (top end work
only is being performed) hold cam chain tight while
rotating the engine to avoid damage to the chain, drive
sprocket teeth, or tensioner blade.

CYLINDER INSTALLATION - PISTON IN
CYLINDER
The piston and cylinder can be installed onto the engine
as an assembly. Using this method, special tools: PV-
43570–1 (Piston Ring Compressor Pliers) and PA-51457
(Piston Ring Band) can be used to compress the rings
when installing the piston into the cylinder.
1. Clean the cylinder bore and piston assembly. Apply a
light film of clean engine oil to the cylinder bore and
piston.

NOTE
Orientate band tool so that open end is opposite the
MAG side of the piston.

9926803 R06 - 2014-2016 Sportsman 325 / ETX / 450 HO / 570 Service Manual 3.59
© Copyright Polaris Industries Inc.