Compression / Leakdown Test; Intake Valve Clearance Adjustment; Exhaust Valve Clearance Adjustment - Polaris RANGER RZR 170 Service Manual

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Compression / Leakdown Test

IMPORTANT: Use of a compression tester adaptor
that is too long WILL CAUSE DAMAGE to the cylinder
head. The adaptor length should be no longer than
the length of the spark plug threads (1/2" or 12.07mm).
Compression tester adaptor threads
should not exceed spark plug threads.
Cylinder Compression
Standard: 130 - 160 psi
Cylinder Leakage
Service Limit: 15%
Inspect if leakage exceeds 15%
2.22
1/2" (12.07mm)
9923983 - 2012-2013 RZR 170 Service Manual
© Copyright 2012 Polaris Sales Inc.

Intake Valve Clearance Adjustment

1. Remove the valve cover and secondary air pipe
assembly.
2. Verify cam lobes are pointed down.
3. Insert the correct thickness feeler gauge between end
of intake valve stem and adjuster screw.
4. When clearance is correct, hold adjuster screw and
tighten locknut securely.
5. Re-check the valve clearance.
6. Repeat adjustment procedure if necessary until
clearance is correct with locknut secured.
Valve Clearance:
.003" (.07 mm)

Exhaust Valve Clearance Adjustment

1. Remove the valve cover and secondary air pipe
assembly.
2. Verify cam lobes are pointed down.
3. Insert the correct thickness feeler gauge between end
of exhaust valve stem and adjuster screw.
4. Loosen locknut and turn adjuster screw until there is
a slight drag on feeler gauge.
5. When clearance is correct, hold adjuster screw and
tighten locknut securely.
6. Re-check the valve clearance.
7. Repeat adjustment procedure if necessary until
clearance is correct with locknut secured.
Valve Clearance:
.003" (.07 mm)
= In. / mm.
= In. / mm.