3.63
ENGINE / COOLING SYSTEM
3
9923523 - 2012 RANGER RZR 570 Service Manual
© Copyright 2011 Polaris Sales Inc.
Camshaft Installation / Timing
IMPORTANT: If a ny va lve tr ain compo nents were
replaced, refer to “Valve Clea rance Adjust ment”
procedure prior to “Camshaft Installation / Timing”.
1. Rotate the engine and position the piston at TDC.
2. Reference th e in take and ex haust ma rkings m ade
during disassembly.
3. Lubricate a ll camsha ft lo bes a nd be aring jo urnal
sur
faces with Pola ris PS- 4 Plus en gine oil pr ior to
installation.
4. Place the exha ust cam in to th e cylin der he ad and
a
lign the timing marks as shown below.
5. Wrap the cam chain around the exhaust cam sprocket
a
nd hold the exhaust cam in its current position.
6. Carefully install the intake cam at an
angle to allow for
cam c hain installation. Ro ll the cam shaft into its
bearing pockets and verify that the timing marks are
in alignment as shown below.
IMPORTANT: Intake c am spr ocket s hould h ave “I”
ma
rks aligne d wit h g asket su rface and the exhaust
cam s procket sh ould ha ve “E” mark s a ligned wit h
gasket surface.
INTAKE
Part Number
EXHAUST
Part Number
Intake Cam
Exhaust Cam
(decompression)
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