Valve Sealing Test; Cylinder Removal; Valve Lifter Removal/Inspection - Polaris 2007 SPORTSMAN X2 800 Service Manual

7. Repeat procedure for remaining valves. When all valves
are installed, tap lightly with soft faced hammer on the end
of the valves to seat the split keepers.
NOTE: To prevent damage to the valve seals, do not
compress the valve spring more than necessary to
install the keepers.

Valve Sealing Test

1. Clean and dry the combustion chamber area (A).
A
2. Pour a small amount of clean solvent onto the intake port
and check for leakage around each intake valve. The valve
seats should hold fluid with no seepage.
3. Repeat for exhaust valves by pouring fluid into exhaust
port.

Cylinder Removal

1. Follow engine disassembly procedures to remove rocker
cover and cylinder head.
2. Tap cylinder (A) lightly with a rubber mallet in the
reinforced areas only until loose.
3. Rock cylinder forward and backward while lifting it from
the crankcase, supporting pistons and connecting rods.
Support pistons with Piston Support Block (PN 2870390).
A

Valve Lifter Removal/Inspection

1. Remove the valve lifter's by reaching into the crankcase
and pushing the lifter up through the lifter bore by hand.
2. Thoroughly clean the lifters in cleaning solvent and wipe
them with a clean lint-free cloth.
3. Mark the lifters with a white pen if using the lifters for
reassembly. This will ensure that the lifters are properly
placed during engine reassembly.
Mark Hydraulic Lifter
4. Check the lifters for wear or scores.
5. Check the bottom end of lifter to make sure that it has a
slight convex.
6. If the bottom surface has worn flat, it may be used with the
original camshaft only.
Inspect Hydraulic Lifter
NOTE: Lifters that are scored, worn, or if the bottom
is not smooth should be replaced with new lifters
and cam as an assembly. If replacing the lifters, the
camshaft should also be replaced.
ENGINE
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