Polaris 2005 Sportsman MV7, Service Manual

Page: 79 / 312

ENGINE
3.21
CYLINDER HEAD DISASSEMBLY, CONT.
NOTE: Carefully remove the cylinder components.
Place the hydraulic lifters (C), pushrods (D), and
rocker arms (E) in a safe, clean area.
D
C
E
5. Measure free length of spring with a Vernier caliper.
Compare to specifications. Replace spring if
measurement is out of specification.
Valve Spring
Free Length
Valve Spring Length:
Std: 1.827
I
(46.40 mm)
Installed Height: 1.47” (37.34 mm)
6. Remove valve guide seals. IMPORTANT: It is
recommended to replace seals whenever the
cylinder head is disassembled. Hardened,
cracked or worn valve seals will cause excessive
oil consumption and carbon buildup.
7. Mark the valves with a white pen. Remove the
valves from the cylinder head. This will ensure
that the valves are properly placed during engine
reassembly.
Mark the valves