3.23
ENGINE
3
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
5.
Dip valve springs and retainer in clean engine oil and
install springs with closely spaced coils toward the
cylinder head.
6.
Place retainer on springs and install valve spring
compressor. Compress spring only enough to allow
split keeper installation and prevent loss of spring
tension. Install split keepers with the gap even on both
sides.
7.
Repeat procedure for remaining valve.
8.
When all valves are installed, tap lightly with soft faced
hammer on the end of the valves to seat the keepers.
Valve Sealing Test
1.
Clean and dry the combustion chamber area.
2.
Pour a small amount of cleaning solvent into each port
and check for leakage around each valve. The valve
seats should hold fluid with no leaking.
Cylinder Removal
Follow engine disassembly procedures to remove the
valve cover, rocker assembly, camshaft and cylinder
head.
1.
Remove cam chain guide at front of cylinder.
2.
Tap cylinder lightly with a soft-faced hammer in
reinforced areas only until loose. NOTE: Orientation
of the dowels (arrows) is important for oil flow.
Note their position for reassembly.
3.
Rock cylinder back and forth while lifting it from the
crankcase, piston and connecting rod. Support piston
with Piston Support Block (PN 2870390).
Cam Chain Follower / Tensioner Guide
Removal
1.
Remove bolt securing the tensioner guide to
crankcase (A). NOTE: CVT disassembly is
required to gain access to the tension guide bolt.
Refer to Chapter 7.
2.
Remove chain guides and inspect for cracks, wear or
damage. Replace assemblies as required.
Closely spaced
coils toward
cylinder head
A