Automatic Compression Release Removal/Inspection - Polaris 2007 Sportsman 500 EF Service Manual

8. Secure cam chain with a wire to prevent it from falling into
the crankcase.
Inspect for Areas of Tooth
Wear or Damage
9. Inspect cam sprocket teeth for wear or damage. Replace if
necessary.
Decompressor Shaft
10. Slide camshaft out the PTO side of the cylinder head.
Sprocket Teeth
Decompressor Ball
Retainer Sleeve
Automatic Compression Release Removal/
Inspection
NOTE: The automatic compression release mechanism can
be inspected and serviced without removing the camshaft from
the cylinder head. The actuator ball (C) in the camshaft is not
replaceable. Replace the camshaft as an assembly if the
actuator ball is worn or damaged.
A
1. Check release lever shaft (A) for smooth operation
throughout the entire range of rotation. The spring (B)
should hold the shaft weight against the stop pin. In this
position, the actuator ball (C) will be held outward in the
compression release mode.
2. Remove release lever shaft and return spring.
3. Inspect shaft for wear or galling.
4. Inspect lobe on end of release lever shaft and actuator ball
for wear and replace if necessary.
ENGINE
C
B
3.17
3