Polaris R09VA17AA, Service Manual

Page: 66 / 187

3.22
ENGINE
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
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