Piston Ring Removal - Polaris GENERAL 2016 Service Manual

ENGINE / COOLING SYSTEM
2. Remove piston circlip and push piston pin out of
piston. If necessary, heat the crown of the piston
slightly with a heat gun if pin cannot be removed by
hand. Discard circlips.
CAUTION
DO NOT apply heat to piston rings or a loss of radial
tension could result.
3. Measure piston pin bore I. D. in two directions (90°
apart). Replace piston and piston pin if out of
specification.
MEASUREMENT
Piston Pin Bore I.D.:
.7877 - .7881" (20.009 - 20.018 mm)
Service Limit:
.7893" (20.05 mm)
3.56
4. Measure piston pin O.D. in two directions (90° apart)
at three locations on the length. Replace piston and
piston pin if out of specification.
MEASUREMENT
Piston Pin O.D.:
.7873 - .7875" (20.000 - 20.005 mm)
Service Limit:
.7866" (19.98 mm)

PISTON RING REMOVAL

1. Carefully remove top compression ring
using a ring removal pliers.
CAUTION
DO NOT expand the ring more than necessary to
remove it from the piston or the ring may break or lose
radial tension.
• Piston ring pliers: Carefully expand ring and lift it off
the piston.
• By hand: Placing both thumbs on the ring ends,
spread the ring open and push up on opposite side. Do
not scratch ring lands.
9929375 R02 - 2016-2019 GENERAL / GENERAL 4 Service Manual
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by hand or
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