3.62
9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual
© Copyright Polaris Inc.
TORQUE
Cylinder Head Bolts:
Apply light coat of engine oil to bolt threads
and under bolt head
Torque in Sequence for all steps
Step 1: 18 ft-lbs (25 Nm)
Step 2: 30 ft-lbs (40 Nm)
Step 3: Loosen all fasteners until they are
unseated
Step 4: 15 ft-lbs (20 Nm)
Step 5: 26 ft-lbs (35 Nm)
Step 6: Additional 180°
Step 7: Additional 180°
Torque The Outer M6 Head Bolts 89 ± 9 in-lbs
(10 ± 1 Nm)
VALVE SEALING TEST
1. Clean and dry the combustion chamber area
q
.
2. Pour a small amount of clean solvent into intake port
w
and check for leakage around the valves. The
valve seats should hold fluid with no seepage.
3. Repeat for exhaust valve by pouring fluid into exhaust
port
e
.
VALVE CLEARANCE CHECK /
ADJUSTMENT
NOTICE
Always inspect valve clearance prior to camshaft
installation or final engine assembly.
NOTICE
Valve clearance should only be checked on a cold
engine.
1. Install the cam chain guides and cam chain before
camshaft installation (if removed) as outlined in this
chapter.
2. Lubricate the camshaft bearing journal surfaces with
Polaris PS-4 engine oil prior to installation.
3. Carefully install the camshafts into the cylinder head.
The camshaft lobes should face out.
4. Carefully install the camshaft carrier onto the
camshafts.
ENGINE / COOLING SYSTEM
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