3
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
3.51
5. Upon installation, torque all fasteners to specification
and reassemble engine and vehicle as outlined in this
chapter.
TORQUE
Lower Cam Chain Guide Fasteners:
9 ft-lbs (12 N·m)
Upper Cam Chain Guide Fasteners:
7 ft-lbs (10 N·m)
CYLINDER HEAD REMOVAL
NOTICE
The cylinder head can be serviced with the engine
installed in the chassis.
Do not rotate head assembly up side-down until the
valve tappets have been removed.
1. Remove and discard the two outer M6 bolts
q
that
retain the cylinder head
w
and the cylinder.
2. Loosen the four cylinder head bolts
e
evenly 1/8 turn
(45 degrees) at a time until all are loose.
3. Remove and discard the cylinder head bolts
e
.
Replace with new upon assembly.
4. Tap cylinder head lightly with a soft faced hammer
until loose. Tap only in reinforced areas or on thick
parts of the cylinder head casting.
5. Remove the cylinder head
w
and head gasket
r
.
CYLINDER HEAD DISASSEMBLY
CAUTION
Wear eye protection during cylinder head disassembly
and reassembly or when working with the valve springs.
NOTICE
Keep mated parts together and in order with respect to
their location in the cylinder head for assembly
purposes. It is important to install cylinder head
components back in the same location. Mark each
component or place them in an organized rack as you
remove them.
1. Remove the valve tappet
q
from the cylinder head.
ENGINE / COOLING SYSTEM
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