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

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ENGINE / COOLING SYSTEM

VALVE SEALING TEST

1. Clean and dry the combustion chamber area

2. Pour a small amount of clean solvent into each

and check for leakage around the

valves. The valve seats should hold fluid with no

3. Repeat for exhaust valves by pouring fluid into each

exhaust port

VALVE CLEARANCE CHECK /

Always inspect valve clearance prior to camshaft

installation or final engine assembly.

1. Install the cam chain guides and cam chain before

camshaft installation (if removed) as outlined in this

2. Reference the camshaft intake

markings made during disassembly. If installing new

camshafts or if camshafts were not marked, you can

reference the part number stamped on the end of the

3. Lubricate the camshaft bearing journal surfaces with

Polaris PS-4 engine oil prior to installation.

4. Carefully install the camshafts into the cylinder head.

The camshaft lobes should face out.

5. Carefully install the camshaft carrier onto the

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

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