Cylinder Head Warp Inspection; Cylinder Head Disassembly - Polaris RZR 900 2017 Service Manual

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ENGINE / COOLING SYSTEM

CYLINDER HEAD WARP INSPECTION

Thoroughly clean cylinder head surface to remove all

traces of gasket material and carbon.

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.

1. Lay a straight edge

cylinder head 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.

Cylinder Head Warp Limit:

.0039" (0.1 mm)

across the surface of the

Wear eye protection during cylinder head disassembly

and reassembly or when working with the valve springs.

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

1. Remove the valve tappet

Note the tappet size

9930588 R02 - 2017-2020 RZR 900 900/S 900/S4 1000/S 1000/S4 Service Manual

remove them.

from the cylinder head.

engraved on the underside of

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