Cylinder Head Removal; Cylinder Head Cleaning - Polaris Sportsman 850 Service Manual

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2. Measure all cam lobe heights from base circle to

highest point on lobe.

3. Temporarily install camshaft carrier as shown below

to measure the camshaft bore. Replace cylinder

head if worn.

ENGINE / COOLING SYSTEM

CYLINDER HEAD REMOVAL

1. Loosen two outer bolts

evenly, 1/8 turn at a time until all are loose.

Remove all bolts, cylinder head, and gasket

Head can be removed from cylinder / crankcase without

removing cam carrier (C) but the center two cylinder

head bolts cannot be removed from the head unless

carrier is removed.

Thoroughly clean cylinder head surface to remove all

traces of gasket material and carbon.

Use care not to damage gasket sealing surface. All

gasket surfaces must be clean, dry, and free of any oil

or grease upon assembly.

Clean sealing surfaces with rubbing alcohol, electrical

contact cleaner or a brake cleaner that does not leave a

solvent residue. Do not touch sealing surfaces of the

new head gasket.

, then loosen all head bolts

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Sportsman 1000