Cylinder Head Inspection / Warp; Valve Seal / Spring Service (On Engine) - Polaris 2013 RANGER RZR S Service Manual

ENGINE / COOLING
Cylinder Head Inspection
Thoroughly clean cylinder head surface to remove all
traces of gasket material and carbon.
CAUTION
Use care not to damage sealing surface.
Cylinder Head Warp
Lay a straight edge (A) across the surface of the cylinder
head (B) 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.
A
Measure at different
points on the surface.
Cylinder Head Warp Limit:
.004" (.1016 mm) max
3.28
B
= In. / mm.
9924125 - 2013 RANGER RZR / RZR S / RZR 4 Service Manual
© Copyright 2012 Polaris Sales Inc.

Valve Seal / Spring Service (On Engine)

NOTE: The following procedure is only for servicing
the top end of the valve train when replacing valve
springs or replacing valve seals.
In some cases the valve train can be serviced while the
cylinder head is still on the engine. Keep all parts in order
with respect to their location in the cylinder head.
Wear eye protection or a face shield during
cylinder head disassembly and reassembly.
1. Having already removed the valve cover, rocker arms
and pushrods, align the cylinder to be worked on at
top dead center (TDC). Install the Valve Pressure
Hose (PU-45652) into the spark plug hole. Hook the
hose to an air compressor and supply 50 to 100 psi
to the hose. This will seat the valves during valve
spring removal. Do not remove air supply until
reassembly is completed.
2. Using the Valve Spring Compressor (PU-45257),
compress the valve spring and remove the valve
keepers.
NOTE: A small parts magnet (A) can aid in the
removal of the retainers (B).
PU-45257
NOTE: To prevent damage to the valve seals, do not
compress the valve spring more than is needed to
remove the valve keepers.
3. Remove spring retainer and spring.
4. The valve seals are now serviceable.
WARNING
B
A