Piston Ring To Groove Clearance Inspection; Piston Ring Installed Gap - Polaris RZR 900 2015 Service Manual

PISTON RING TO GROOVE CLEARANCE
INSPECTION
1. Measure piston ring to groove clearance
placing the ring in the ring land and measuring with a
thickness (feeler) gauge. Replace piston and rings if
ring-to-groove clearance exceeds service limits.
MEASUREMENT
Piston Ring to Groove Clearance:
Top Ring: 0.0012 - 0.0037" (.030 - .095 mm)
Second Ring: 0.0012 - 0.0030" (.030 - .076 mm)
Service Limit: .0047" (.12 mm)
9926814 R08 -
Manual
© Copyright Polaris Industries Inc.

PISTON RING INSTALLED GAP

1. Place each piston ring
q
the piston to push the ring squarely into cylinder, as
by
shown below.
2. Measure installed gap with a feeler gauge
the top and bottom of the cylinder.
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
3. If the installed gap measurement exceeds the
service limit, replace the rings.
Second Ring: .015 - .025" (.37 - .63 mm)
Oil Control Rails: .010 - .040" (.25 - 1.02 mm)
Always check piston ring installed gap when installing
2015-2016 RZR 900
ENGINE / COOLING SYSTEM
q
inside the cylinder
NOTE
out of round.
MEASUREMENT
Piston Ring Installed Gap:
Top Ring: .008 - .014" (.20 - .36 mm)
Service Limit: .020" (.50 mm)
Service Limit: .028" (.70 mm)
Service Limit: .059" (1.50 mm)
NOTE
new rings and/or a new cylinder.
2016 RZR S 1000 Service
w
. Use
e
at both
3
3.63