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9930588 R02 - 2017-2020 RZR 900 900/S 900/S4 1000/S 1000/S4 Service Manual
© Copyright Polaris Industries Inc.
3.121
3. Install upper rail with end gap positioned on the
exhaust side of piston.
4. Install second ring with marking facing top of piston.
Rotate ring to position the end gap toward intake
side of piston as shown below.
5. Install top ring with mark facing top of piston. Rotate
ring to position the end gap toward exhaust side of
piston as shown below.
6. Be sure top and second rings rotate freely in their
grooves and do not bind when compressed by hand.
ENGINE / COOLING SYSTEM
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