3.48
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
ENGINE DISASSEMBLY / INSPECTION -
TOP END
VALVE COVER REMOVAL
NOTICE
The valve cover, camshafts, cylinder head, cylinder and
piston can be serviced with the engine installed in the
chassis.
1. If needed, remove the spark plug wire from the
engine.
2. Remove dirt and debris from valve cover area.
3. Remove the four valve cover bolts
q
.
4. Carefully lift valve cover from the engine and remove
it out of the right-hand rear wheel well area.
5. Replace valve cover seal
w
if oil leaks are evident.
CAMSHAFT / CARRIER REMOVAL
NOTICE
The camshafts can be removed with the engine
installed in the chassis.
1. Rotate the engine so the piston is at Top Dead Center
(TDC) on the compression stroke.
NOTICE
To verify TDC, see “Setting TDC (Top-Dead-Center)”.
2. Remove the hydraulic cam chain tensioner
e
from
the cylinder. Replace the sealing washer
r
upon
reassembly.
3. Remove the camshaft sprocket bolt
u
while holding
engine from turning. Pull the camshaft sprocket
i
off
of the camshaft and remove the timing chain from the
sprocket. Carefully remove the camshaft from the
engine.
ENGINE / COOLING SYSTEM
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