Page 218 - Manual_Polaris_RZR_ProXP-20-21

ENGINE / COOLING SYSTEM

PISTON DISASSEMBLY / INSPECTION 3. Measure piston pin bore I.D. in two directions (90°
apart). Replace piston and piston pin if out of
NOTICE
specification.
New pistons are directional (intake vs. exhaust), but
can be placed in either cylinder. The arrow will point
towards the exhaust side.

1. Note location of the piston circlip gap q at the top
(12:00 position).

MEASUREMENT
Piston Pin Bore I.D.:
.8665 - .8668" (22.009 - 22.017 mm)

Service Limit:.8678" (22.042 mm)
2. Remove piston circlips w and push piston pin e out
of piston. If necessary, heat the crown of the piston 4. Measure piston pin O.D. in two directions (90° apart)
slightly with a heat gun if pin cannot be removed by at three locations on the length. Replace piston and
hand. Discard circlips. piston pin if out of specification.

MEASUREMENT
CAUTION
Piston Pin O.D.:
DO NOTapply heat to piston rings or a loss of radial .8659 - .8661" (21.995 - 22.000 mm)
tension could result.
Service Limit: .8651" (21.975 mm)

3.74 9930583 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual
© Copyright Polaris Industries Inc.