Camshaft Removal; Camshaft Inspection - Polaris RANGER RZR 170 Service Manual

ENGINE
8. Inspect the lash adjusters for wear, pitting, or damage
to threads of the adjuster or locknut. Replace all worn
or damaged parts. NOTE: The end of the lash
adjuster is hardened and cannot be ground or re-
surfaced.

Camshaft Removal

NOTE: Cam chain tensioner must be removed
before performing this procedure.
1. Verify the valve cover and cam chain tensioner have
been removed.
2. Remove the 4 cylinder head bolts evenly by loosening
each one 1/4 turn at a time until loose. Tap the rocker
assembly with a non-marring hammer to loosen and
remove the assembly.
3. Remove the cam chain from the sprocket by tilting the
cam assembly and simultaneously lifting the chain.
4. If not removing the cylinder for other service, secure
the cam chain with a wire to prevent it from falling into
the crankcase.
3.16

Camshaft Inspection

1. Inspect cam sprocket teeth for wear or damage.
2. Inspect the compression release mechanism. This is
3. Visually inspect each cam lobe and bearing for wear,
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.
Replace if necessary.
Inspect for Areas of
Tooth Wear or Damage
a one-way rotating shoulder that lifts the exhaust valve
slightly during start-up. If the one-way mechanism is
not functioning, replace the cam. Verify the stop
bracket and spring is functioning correctly. Replace if
excessive wear of components is found.
Compression Release
One-Way Operation
chafing or damage.
Bearings
Lobe Height