9
REPLACE SPARK PLUG
The spark plug should be replaced each year
to ensure the engine starts easier and runs
better. Set spark plug gap at 0.025 inches.
Ignition timing is fixed, nonadjustable.
1. Twist then pull off the spark plug boot.
2. Remove and discard the spark plug.
3. Replace with Champion RCJ--6Y spark
plug and tighten securely with a wrench.
4. Reinstall the spark plug boot.
Spark Plug Boot
Spark Plug
SERVICE AND ADJUSTMENTS
BLADE REPLACEMENT
1. To remove the blade, insert a screwdriver
into one of the holes in the gearbox; then,
remove the blade nut by turning clockwise.
Blade
Gearbox holes
2. Remove the washer and blade from the
blade shaft.
3. Align the flat area of the blade opening with
the flat side of the shaft. Place the new
blade on the shaft.
Nut
Washer
Flat sides
Hole
TO REMOVE
4. Install the washer and nut; turn nut coun-
terclockwise on the blade shaft.
5. Bind blade by inserting a screwdriver into
one of the holes in the gearbox; then, firmly
tighten nut with a wrench.
CARBURETOR IDLE SPEED
ADJUSTMENT
WARNING:
Keep others away when
making idle speed adjustments. The blade
shaft will be spinning during most of this pro-
cedure. Wear your protective equipment and
observe all safety precautions. After making
adjustments, the blade shaft must not spin 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 spins at idle.
Keep others away when making idle speed
adjustments. Remove the blade before mak-
ing carburetor idle speed adjustments. Do not
make adjustments from the blade side of the
unit. Recheck the idle speed after each ad-
justment. The blade must not spin at idle
speed to avoid serious injury to the operator
or others. Make adjustments with the unit
supported so the blade is off the ground and
will not make contact with any object. Hold
the unit by hand while running and making ad-
justments. Keep all parts of your body away
from the blade and muffler.
To adjust idle speed:
Allow engine to idle. Adjust speed until engine
runs without the blade shaft spinning (idle too
fast) or engine 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 shaft
spins at idle speed.
WARNING:
Recheck the idle speed
after each adjustment. The blade shaft must
not spin at idle speed to avoid serious injury to
the operator or others.
Idle Speed
Adjustment
Screw
If you require further assistance or are unsure
about performing this procedure, contact an
authorized
service
dealer
or
call
1--800--554--6723.
