Table of Contents
VALVE CLEARANCE ADJUSTMENT
IMPORTANT
Do not rotate the engine backwards. The timing chain
may jump teeth and lead to poor performance.
NOTE
Always inspect valve clearance prior to camshaft
installation or final engine assembly.
IMPORTANT
The engine has a 270° offset crank. There will always
be at least one valve open at any position of the crank.
Turn the camshaft until two valves are not loaded.
1. Remove the valve cover (if it is not already off).
2. Rotate the camshaft until the cam lobes above the
valves you are inspecting are facing up
3. Measure the valve clearance
(feeler) gauge. Record the measurement if clearance
is out of specification.
MEASUREMENT
Intake Valve Clearance (cold):
.006 ± .002" (0.15 ± 0.05 mm)
Exhaust Valve Clearance (cold):
.010 ± .002" (0.25 ± 0.05 mm)
4. Repeat steps 6 and 7 until all eight valves have been
inspected.
5. If any of the valve clearance measurements are out of
specification, remove the camshaft carriers 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.
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
© Copyright Polaris Industries Inc.
6. Remove the valve tappet from a valve that was out of
specification.
Keep mated parts together and in order with respect to
y
.
purposes. Mark each component or place them in an
7. Record the 3 digit number
tappet.
u
using a thickness
8. Reference
recorded for that valve, along with the 3-digit tappet
number.
9. Refer to Valve Lash - Tappet Selection, page 3.92
and select the proper tappet.
10. Install the appropriate tappet into the cylinder head.
Lubricate the outer portion of the valve bucket upon
11. Repeat steps 10-14 until all necessary valves have
been adjusted.
12. Reinstall the camshafts and camshaft carriers and
tighten the bolts evenly to specification.
ENGINE / COOLING SYSTEM
NOTE
their location in the cylinder head for assembly
organized rack as you remove them.
i
the
valve
clearance
NOTE
installation.
3
on the bottom of the
measurement
3.91
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