Cylinder Head Inspection; Cylinder Head Warp Inspection; Valve Inspection - Polaris 2012 RANGER RZR 570 INTL Service Manual

ENGINE / COOLING SYSTEM

Cylinder Head Inspection

Thoroughly clea n cylinde r h ead sur face to r emove a ll
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.

Cylinder Head Warp Inspection

1. Lay a s traight ed ge ( E) ac ross the s urface of th e
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.
E
Cylinder Head Warp Limit:
.0024" (0.06 mm)
3.44
= In. / mm.
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.

Valve Inspection

1. Remove all carbon from valves with a soft wire wheel
or brush.
2. Check va lve face fo r exce ssive runout, pit ting, a nd
burnt spots.
3. To chec k for bent v alve st ems, mo unt va lve in "V "
blocks and measure with a dial indicator.
4. Check the e nd of the valve stem fo r flaring, pitting,
wear or damage.
5. Inspect split keeper groove for wear or flaring in the
keeper seat area.
NOTE: The valves can be re-faced or end ground, if
necessary. T hey mu st be re placed if e xtensively
worn, burnt, bent or damaged.