3.43
ENGINE / COOLING SYSTEM
3
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
3. Push down on the spring and remove the split keepers
(H).
4. Slowly release valve spring pressure and remove the
comp
ressor adapter.
5. Remove the valve retainer (I), valve spring (J), valve
stem se
al (K) and valve spring seat (L). Discard the
valve seal.
NOTE: Replace valve seals whenever cylinder head
is disa
ssembled. Harde ned, cr acked or worn s eals
will cause excessive oil consumption.
6. Lift up the cylinder head and push the valve (M) out,
ke
eping it in order for reassembly in the same valve
guide.
7. Repeat the previous steps to re
move the re maining
valves.
8. Clean the co mbustion ch amber and he ad g asket
surf
ace.
9. Measure the free length of each valve spring with a
Vernier caliper and compar
e to specification.
Valve Spring Free Length:
Standard: 1.7263" (43.85 mm)
Service Limit: 1.6830" (42.75 mm)
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