Cylinder Head Removal - Polaris 2007 Sportsman 500 EF Service Manual

3. Measure height of each cam lobe using a micrometer.
Compare to specifications.
Journal O.D
Journal
Camshaft Journal O.D.:
Mag & PTO End: 1.4935-1.4941"
(37.935- 37.950 mm)
4. Measure camshaft journal outside diameter (O.D.)
5. Measure ID of camshaft journal bore.
Camshaft Journal I.D.:
Mag & PTO End: 1.4963-1.4970"
(38.005- 38.025 mm)
Calculate oil clearance by subtracting journal OD from
journal bore ID. Compare to specifications.
Camshaft Oil Clearance:
Std: .0022-.0035" (.055-.090 mm)
Limit: .0039" (.10 mm)
NOTE: Replace camshaft if damaged or if any part is
worn past the service limit.
NOTE: Replace cylinder head if camshaft journal bore is
damaged or worn excessively.

Cylinder Head Removal

1. Remove the two 6mm flange bolts (A) from cylinder head.
See next exploded view on next page.
2. Loosen each of the four cylinder head bolts (B) evenly 1/8
turn each time in a criss-cross pattern until loose.
B
3. Remove bolts (B) and tap cylinder head lightly with a
plastic hammer until loose. CAUTION: Tap only in
reinforced areas or on thick parts of cylinder head casting
to avoid damaging the thread.
4. Remove cylinder head and head gasket.
ENGINE
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