Cylinder Head Inspection; Cylinder Head Warp Inspection; Combustion Chamber Inspection; Cylinder Head Disassembly - Polaris RANGER RZR 170 Service Manual

ENGINE

Cylinder Head Inspection

1. Thoroughly clean cylinder head surface to remove all
traces of gasket material and carbon.
Use care not to damage sealing surface.
If there is damage found on the cylinder head
combustion chamber, it is recommended the
component be replaced.

Cylinder Head Warp Inspection

1. Lay a straight edge across the surface of the head at
several different points and measure warpage by
inserting a feeler gauge between the straight edge
and the cylinder head surface. If warpage exceeds
the service limit, replace the cylinder head.
Cylinder Head Warp Limit: .002" (.05 mm)

Combustion Chamber Inspection

Clean all accumulated carbon deposits from combustion
chamber and valve seat area with a soft wire brush.
Inspect the combustion chamber for cracks and/or
damage from foreign debris.
3.18
CAUTION
= In. / mm.
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.

Cylinder Head Disassembly

Wear eye protection or a face shield during
cylinder head disassembly and reassembly.
NOTE: Keep all parts in order with respect to their
location in the cylinder head.
NOTE: Valves have inner and outer springs.
1. Using a valve spring compressor, compress the valve
springs and remove the split keeper. NOTE: To
prevent loss of tension, do not compress the valve
spring more than necessary.
2. Remove spring retainer and spring.
NOTE: The valve springs should be positioned with
the tightly wound coils against the cylinder head on
progressively wound springs (A).
3. Push valve out, keeping it in order for reassembly in
the same guide.
WARNING
A