Intake Valve Clearance Adjustment; Exhaust Valve Clearance Adjustment - Polaris 2009 Trail Boss 330 Service Manual

INTAKE VALVE CLEARANCE
ADJUSTMENT
1. Insert a .006" (.15mm) feeler gauge between end
of intake valve stem and clearance adjuster
screw.
2. Using Valve/Clutch Adjuster (PA- -44689), loosen
adjuster lock nut and turn adjusting knob 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.
EXHAUST VALVE
CLEARANCE ADJUSTMENT
NOTE: The exhaust valve is adjusted the same as the
intake valve.
1. Insert .006" feeler gauge between end of exhaust
2. Loosen locknut and turn adjuster screw until there
3. When clearance is correct, hold adjuster screw
4. Re-check the valve clearance.
5. Repeat adjustment procedure if necessary until
6. Inspect o-rings on the plastic valve plugs, replace
7. Reinstall fuel tank and any body panels that were
STEERING
The steering components should be checked
periodically for loose fasteners, worn tie rod ends, and
damage. Also check to make sure all cotter pins are
in place. If cotter pins are removed, they must not be
re-used. Always use new cotter pins.
330 Engine
Replace any worn or damaged steering components.
Steering should move freely through entire range of
travel without binding. Check routing of all cables,
hoses, and wiring to be sure the steering mechanism
is not restricted or limited. NOTE: Whenever steering
components are replaced, check front end alignment.
Use only genuine Polaris parts.
NOTE: Due to the critical nature of the procedures
outlined in this chapter, Polaris recommends steering
component repair and adjustment be performed by an
authorized Polaris Dealer. Only a qualified technician
should replace worn or damaged steering parts. Use
only genuine Polaris replacement parts.
One of two methods can be used to measure toe
alignment: The string method and the chalk method.
If adjustment is required, refer to following pages for
procedure.
MAINTENANCE
valve stem and adjuster screw.
EXHAUST VALVE CLEARANCE:
0.006±0.0008I (0.15±0.02 mm)
BTDC on compression
is a slight drag on feeler gauge.
and tighten locknut securely
clearance is correct with locknut secured.
if damaged. Securely fasten valve plugs.
removed to gain access.
WARNING
2.25