Polaris RANGER 500 2018 Service Manual page 253

7. Torque the camshaft carrier bolts in sequence to
specification.
TORQUE
Camshaft Carrier Bolts:
7 ft-lbs (10 Nm)
8. Install the Cylinder Holding and Camshaft Timing
Plate into the end of camshafts as shown below. The
thermostat housing must be removed to install the
timing plate PU-50563.
Cylinder Holding / Camshaft Timing Plate:
PU-50563
9. Measure the valve clearance of each valve using a
thickness (feeler) gauge. Record the measurement if
clearance is out of specification.
MEASUREMENT
Intake Valve Clearance (cold):
.006 ± .002" (0.150 ± .050 mm)
MEASUREMENT
Exhaust Valve Clearance (cold):
.008 ± .002" (0.200 ± .050 mm)
9928485 R01 - 2017-2018 RANGER 500 / 570 Service Manual
© Copyright Polaris Industries Inc.
ENGINE / COOLING SYSTEM
10. If any of the valve clearance measurements are out
of specification, remove the camshaft carrier and
camshafts and proceed with this procedure.
NOTE
If all valve clearance measurements are within
specification, remove the camshaft carriers and
proceed to "Camshaft Installation / Timing".
11. Remove the valve tappet
out of specification.
NOTE
Keep mated parts together and in order with respect to
their location in the cylinder head for assembly
purposes. Mark each component or place them in an
organized rack as you remove them.
12. Record the 3-digit number engraved on top of the
tappet.
13. Reference the valve
recorded for that valve, along with the 3-digit tappet
number.
14. Refer to the appropriate tappet selection matrix
(Intake or Exhaust) on the following pages and select
the proper tappet.
15. Install the new tappet.
NOTE
Lubricate the outer portion of the valve bucket upon
installation.
16. Repeat steps until all necessary valves have been
adjusted.
17. Reinstall the camshafts and camshaft carriers and
tighten the bolts evenly to specification.
TORQUE
Camshaft Carrier Bolts:
7 ft-lbs (10 Nm)
q
from a valve that was
clearance measurement
3.175
3