Polaris TRAIL BOSS 325 2001 Manual page 40

MAINTENANCE
INTAKE VALVE CLEARANCE ADJUSTMENT
1. Insert a .006s (.15mm) feeler gauge between end of
intake valve stem and clearance adjuster screw.
2. Using a 10 mm wrench and a screwdriver, loosen
adjuster lock nut and turn adjusting screw until there is
a slight drag on the feeler gauge.
3. Hold adjuster screw and tighten adjuster lock nut
securely.
4. Re-check the valve clearance.
5. Repeat adjustment procedure if necessary until
clearance is correct with locknut secured.
INTAKE VALVE CLEARANCE
.006s (.15 mm)
EXHAUST VALVE CLEARANCE ADJUSTMENT
NOTE: The exhaust valve is adjusted the same as the in-
take valve.
1. Insert .006s feeler gauge between end of exhaust
valve stem and adjuster screw.
2. Loosen locknut and turn adjuster screw until there is a
slight drag on feeler gauge.
EXHAUST VALVE CLEARANCE
.006s (.15 mm)
3. When clearance is correct, hold adjuster screw and
tighten locknut securely
4. Re-check the valve clearance.
5. Repeat adjustment procedure if necessary until
clearance is correct with locknut secured.
6. Inspect o-rings on the plastic valve plugs, replace if
damaged. Securely fasten valve plugs.
7. Reinstall fuel tank and any body panels that were
removed to gain access.
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