3.52
9928491 R04 - 2017-2018 RZR XP Turbo / XP4 Turbo Service Manual
© Copyright Polaris Industries Inc.
CYLINDER HEAD REMOVAL
NOTE
The cylinder head can be serviced with the engine
installed in the chassis.
1. Disconnect coolant hose
q
from thermostat housing
if connected.
2. Remove the two fasteners
w
retaining the thermostat
housing to the cylinder head.
3. Remove the two outer M6 bolts
e
that retain the
cylinder head
r
to the cylinder.
4. Loosen the six cylinder head bolts
t
evenly 1/8 turn
at a time until all are loose.
5. Remove and discard the cylinder head bolts.
6. Tap cylinder head lightly with a soft faced hammer
until loose.
CAUTION
Tap only in reinforced areas or on thick parts of the
cylinder head casting.
7. Remove the cylinder head and head gasket
y
.
NOTE
Once the cylinder head is removed, nothing retains the
cylinder to the engine. DO NOT rotate the engine
without using the Cylinder Holding & Camshaft Timing
Plate (PU-50563). Refer to Cylinder / Piston Removal,
page 3.66.
CYLINDER HEAD INSPECTION
Thoroughly clean cylinder head surface to remove all
traces of gasket material and carbon.
CAUTION
Use care not to damage gasket sealing surface. All
gasket surfaces must be clean, dry and free of any oil
or grease upon assembly. Clean sealing surfaces with
rubbing alcohol or electrical contact cleaner. Do not
touch sealing surfaces of the new head gasket.
Lay a straight edge across the surface of the cylinder
head
r
at several different points and measure warp by
inserting a feeler gauge between the straight edge and
the cylinder head surface. If warp exceeds the service
limit, replace the cylinder head.
MEASUREMENT
Cylinder Head Warp Limit:
.002″ (0.05 mm)
CYLINDER HEAD DISASSEMBLY
WARNING
Wear eye protection during cylinder head disassembly
and reassembly or when working with the valve springs.
ENGINE / COOLING SYSTEM
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