Valve Inspection - Polaris RANGER XP 900 2018-2019 Service Manual

ENGINE / COOLING / HVAC SYSTEM
3. Push down on spring and remove split keepers (H).
4. Slowly release valve spring pressure and remove the
compressor adapter.
5. Remove the valve retainer (I), valve spring (J) and
the valve stem seal / seat (K). Discard the valve seal.
NOTICE
Replace valve seals whenever cylinder head is
disassembled. Hardened, cracked or worn seals will
cause excessive oil consumption.
6. Lift up the cylinder head and push the valve (L) out,
keeping it in order for reassembly in the same valve
guide.
7. Repeat the previous steps to remove the remaining
valves.
8. Clean the combustion chamber and head gasket
surface.
3.38
9. Measure the free length of each valve spring with a
Vernier caliper and compare to specification.
MEASUREMENT
Valve Spring Free Length:
Standard: 1.7213" (43.72 mm)
Service Limit: 1.6830" (42.75 mm)

VALVE INSPECTION

1. Remove all carbon from valves with a soft wire wheel
or brush.
2. Check valve face for runout, pitting, and burnt spots.
To check for bent valve stems, mount valve in a drill
or use "V" blocks and a dial indicator.
3. Check the end of the valve stem for flaring, pitting,
wear or damage.
9929399 R01 - 2018-2019 RANGER XP/ CREW 900/1000 Service Manual
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