Piston Ring Installed Gap (900); Piston Ring Installed Gap (1000) - Polaris RANGER XP 900 2018-2019 Service Manual

PISTON RING INSTALLED GAP (900)

1. Place each piston ring (A) inside the cylinder (B).
Use the piston to push the ring squarely into cylinder,
as shown below.
2. Measure installed gap with a feeler gauge (C) at both
the top and bottom of the cylinder.
NOTICE
A difference between top and bottom end gap
measurements is a general indication of cylinder taper
(wear). The cylinder should be measured for taper and
out of round.
3. If the installed gap measurement exceeds the
service limit, replace the rings.
MEASUREMENT
Piston Ring Installed Gap:
Top Ring: 0.008" - 0.014" (0.20 - 0.36 mm)
Service Limit: 0.020" (0.50 mm)
Second Ring: 0.015" - 0.025" (0.37 - 0.63 mm)
Service Limit: 0.028" (0.70 mm)
Oil Control Rails: 0.010" - 0.040" (0.25 - 1.02 mm)
Service Limit: 0.059" (1.50 mm)
NOTICE
Always check piston ring installed gap when installing
new rings and/or a new cylinder.
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
© Copyright Polaris Industries Inc.
ENGINE / COOLING / HVAC SYSTEM

PISTON RING INSTALLED GAP (1000)

q
1. Place each piston ring
the piston to push the ring squarely into cylinder, as
shown below.
2. Measure installed gap with a feeler gauge
the top and bottom of the cylinder.
NOTICE
A difference between top and bottom end gap
measurements is a general indication of cylinder taper
(wear). The cylinder should be measured for taper and
out of round.
3. If the installed gap measurement exceeds the
service limit, replace the rings.
MEASUREMENT
Piston Ring Installed Gap:
Top Ring: .010 - .014" (0.25 - 0.35 mm)
Service Limit: 1.6118 - 1.6122" (40.942 - 40.950 mm)
Second Ring: 1.6118 - 1.6122" (40.942 - 40.950 mm)
Service Limit: .028" (0.70 mm)
Oil Control Rails: .008 - .028" (0.20 - 0.70 mm)
Service Limit: .0354" (0.9 mm)
NOTICE
Always check piston ring installed gap when installing
new rings and/or a new cylinder.
w
inside the cylinder . Use
e
at both
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