3
9926806 R03 - 2015 - 2016 RANGER ETX / 570 2-SEAT 2015 - 2016 RANGER 570 CREW Service Manual
© Copyright Polaris Industries Inc.
3.43
ENGINE DISASSEMBLY / INSPECTION - TOP END
VALVE COVER REMOVAL
NOTE
The valve cover, camshafts, cylinder head, cylinder and
piston can be serviced with the engine installed in the
chassis.
1. Disconnect the spark plug wire from the spark plug
q
by firmly grasping the wire boot and twist slightly
while lifting up.
2. Remove dirt and debris from valve cover area.
3. Remove the spark plug
q
. Stuff spark plug hole with
a shop towel to prevent debris from entering the
combustion chamber (if further engine disassembly
is required).
4. Remove three valve cover shoulder bolts
w
and
isolators
e
using a T40 driver.
5. Carefully lift valve cover from the engine and remove
it.
6. Replace isolators
e
and valve cover seal
r
if oil
leaks are evident.
NOTE
Carefully pass the spark plug hole section
q
of the
valve cover seal under the cam carrier bridge
w
to
remove or install the seal.
IMPORTANT
Discard valve cover Isolators upon removal. New
Isolators are required once removed.
Inspect the valve cover seal and replace if damaged or
signs of leaking are present.
VALVE COVER INSPECTION
Inspect the breather plate
q
for damage. Remove the
screws
w
and clean passages in cover.
After cleaning valve cover, reinstall breather plate and
torque screws to specification.
TORQUE
Valve Cover Breather Plate Screws:
3 ft-lbs (4 Nm)
ENGINE / COOLING SYSTEM
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