Engine Disassembly / Inspection; Valve Cover Removal / Inspection; Rocker Carrier / Camshaft Removal - Polaris Sportsman 850 Service Manual

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ENGINE DISASSEMBLY / INSPECTION

1. Remove the six rocker cover bolts

2. Replace isolators and cover gasket

1. Using a 12 mm Allen socket, rotate the flywheel

clockwise (direction of engine rotation) until pin

facing UP. Rotate engine back 60° to the 10:00

to relieve valve spring pressure from

camshaft lobes.

DO NOT rotate the engine using the camshaft sprocket

retaining bolt.

2. Using an 8mm socket, remove cam chain tensioner

and isolators

marked on plate

3. Using a 12mm socket, remove the cam sprocket bolt

if oil leaks are

and lift the chain and sprocket off camshaft.

Secure cam chain with a wire to prevent it from

falling off the crankshaft gear (if cylinder head will not

be removed).

4. Using a 10mm socket, loosen all cam carrier bolts

evenly and lift carrier / rocker arm assembly from

cylinder head.

5. Lift camshaft from cylinder head.

ENGINE / COOLING SYSTEM

evenly and remove tensioner. Note "TOP"

for assembly.

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Sportsman 1000