Valve Sealing Test; Valve Clearance Check / Adjustment - Polaris RANGER 500 2017 Service Manual

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ENGINE / COOLING SYSTEM

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

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

VALVE SEALING TEST

1. Clean and dry the combustion chamber area

2. Pour a small amount of clean solvent into intake port

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

VALVE CLEARANCE CHECK /

Always inspect valve clearance prior to camshaft

installation or final engine assembly.

Valve clearance should only be checked on a cold

1. Install the cam chain guides and cam chain before

camshaft installation (if removed) as outlined in this

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

9850043 R01 - 2017-2021 RANGER 500 / 570 Service Manual

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