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9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
3.63
5. Install the four bolts that retain the camshaft carrier.
6. Torque the camshaft carrier bolts in sequence to
specification.
TORQUE
Camshaft Carrier Bolts:
7 ft-lbs (10 N·m)
7. 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″ (0.152 ± .050 mm)
MEASUREMENT
Exhaust Valve Clearance (cold):
.010 ± .002″ (0.254 ± .050 mm)
8. If any of the valve clearance measurements are out of
specification, remove the camshaft carrier and
camshaft and proceed with this procedure.
NOTICE
If all valve clearance measurements are within
specification, remove the camshaft carriers and
proceed to “Camshaft Installation / Timing”.
9. Remove the valve tappet
q
from a valve that was out
of specification.
NOTICE
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.
10.Record the 3-digit number engraved on top of the
tappet.
11. Reference the valve clearance measurement
recorded for that valve, along with the 3-digit tappet
number.
12.Refer to the appropriate tappet selection matrix
(Intake or Exhaust) on the following pages and select
the proper tappet.
13.Install the new tappet.
NOTICE
Lubricate the outer portion of the valve bucket upon
installation.
14.Repeat steps until all necessary valves have been
adjusted.
ENGINE / COOLING SYSTEM
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