Engine Disassembly And Inspection; Valve Cover / Breather Valve; Rocker Carrier / Camshaft Removal - Polaris 2009 Sportsman XP 850 Service Manual

ENGINE
ENGINE DISASSEMBLY AND
INSPECTION

Valve Cover / Breather Valve

1. Remove (2) breather housing bolts (A). Inspect bellows
(B) for cracks (not required for valve cover removal).
2. Remove (6) rocker cover bolts (C) and isolators (D).
3. Replace isolators and gasket (E) if oil leaks are evident.
A
B
5.26
C
D
E

Rocker Carrier / Camshaft Removal

1. Rotate engine in direction of rotation until pin (A) is facing
UP. Rotate cam another 60° to the 10:00 position to relieve
valve spring pressure from camshaft lobes.
10:00
2. Remove cam chain tensioner bolts evenly and remove
tensioner. Note "TOP" marked on plate for assembly.
"TOP"
3. Remove sprocket bolt and lift chain and sprocket off
camshaft. Secure cam chain with a wire (if cylinder head
will not be removed).
4. Loosen all cam carrier bolts evenly and lift carrier / rocker
arm assembly from cylinder head.
A