3.90
9940259 R02 - 2022
RZR
PRO R / PRO R 4 Service Manual
© Copyright Polaris Industries Inc.
CAMSHAFT TIMING CHAIN AND
SPROCKET INSTALLATION
NOTICE
When performing timing chain service, it may be helpful
to use the timing chain retainer
PU-51116
.
1. Ensure the intake and exhaust camshaft notches are
in the 12 o’clock position
q
. The number 1 piston
should be at top dead center (TDC), crankshaft key at
12 o’clock. The engine is timed top-dead center
exhaust stroke.
2. If removed, install the intake and exhaust camshaft
sprockets. Place the cam hex in a soft jaw vice.
3. Align the camshaft sprockets with the timing mark
w
in the 12 o’clock position. Torque fasteners to
specification.
Oil the threads and apply grease to the head of the
fastener
IMPORTANT
Always install NEW actuator bolts.
TORQUE
Camshaft Sprocket Fastener:
22 ft-lbs (30 N·m) + 90°
