Polaris 2014 Sportsman 570 EPS Forest - Piston Ring Installed Gap

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9924871 R03 - 2014 Polaris Sportsman® 570 EFI Service Manual
© Copyright 2013 Polaris Sales Inc.
4. Measure piston ring to groove clearance by placing
the ring in the ring land and measuring with a
thickness gauge. Replace piston and rings if ring-to-
groove clearance exceeds service limits.
Piston Ring-to-Groove Clearance
Top Ring:
Std.: 0.0011 - 0.0037" (0.030 - 0.095 mm)
Service Limit: 0.0042" (0.108 mm)
Second Ring:
Std.: 0.0007 - 0.0029" (.020 - 0.076 mm)
Service Limit: 0.0035" (0.89 mm)
Piston Ring Installed Gap
1. Place each piston ring inside cylinder. Use a piston
to push the ring squarely into place 1” (25.4 mm)
down from the cylinder head gasket surface.
2. Measure installed gap with a feeler gauge at location
(A).
Piston Ring Installed Gap
Top Ring:
Std: 0.0059 - 0.0122" (0.15 - 0.31 mm)
Limit: 0.0137" (0.35 mm)
Second Ring:
Std: 0.0094 - 0.0196" (0.24 - 0.50 mm)
Limit: 0.022" (0.56 mm)
Oil Ring Rails:
Std: 0.0098” - 0.0401" (0.25 - 1.02 mm)
Limit: 0.0480" (1.22 mm)
NOTE: Always check piston ring installed gap
after re-boring a cylinder or when installing new
rings.
ENGINE