Poulan 530163900 - Manual (Page 7)

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As your unit is used, carbon deposits build up
on the muffler and spark arresting screen.
For normal homeowner use, however, the
muffler and spark arresting screen will not re-
quire any service. After 50 hours of use, we
recommend that your muffler be serviced or
replaced by your authorized service dealer.
CARBURETOR ADJUSTMENT
WARNING: Keep others away when
making idle speed adjustments. The blade
will be moving during most of this procedure.
Wear your protective equipment and observe
all safety precautions. When making adjust-
ments, use a screwdriver short enough to
keep your hands behind the handguard and
away from the blade. After making adjust-
ments, the blade must not move at idle speed.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if you
notice any of the following conditions:
S Engine will not idle when the throttle is re-
leased.
S The blade moves at idle.
Keep others away when making idle speed
adjustments. Make adjustments with the unit
resting on a level surface free of debris that can
be caught in the hedge trimmer blade. Serious
injury to the operator and others can occur if the
carburetor is not properly adjusted. Keep all
parts of your body away from the blade and
muffler.
Idle Speed Adjustment
Allow engine to idle. Adjust speed until engine
runs without blade moving (idle too fast) or en-
gine stalling (idle speed too slow).
S Turn idle speed screw clockwise to in-
crease engine speed if engine stalls or dies.
S Turn idle speed screw counterclockwise to
decrease engine speed if the blade moves
at idle.
WARNING: Recheck the idle speed
after each adjustment. The blade must not
move at idle speed to avoid serious injury to
the operator or others.
Idle Speed Screw
If you require further assistance or are unsure
about performing this procedure, contact an
authorized
service dealer or call
1--800--554--6723.
BLADE ADJUSTMENT
The clearance between the cutting blades
must be adjusted periodically to maintain opti-
mal performance and sharp cutting.
Blade
guide
Bolt
Blades
Cupped
Washer Flat
Washer
Blade guide
Nuts
Nut
1. Using a wrench, loosen each nut on the
top side of the blade guide.
Wrench
Nut
TOP SIDE OF BLADE
2. Tighten each bolt from underside of blade
with a wrench.
UNDERSIDE OF BLADE
Bolt
3. Loosen each bolt 1/2 turn.
UNDERSIDE OF BLADE
Bolt
1/2 turn
4. While holding each bolt in place with a
wrench, retighten the nuts.
TOP SIDE
OF BLADE