REPLACE SPARK PLUG | Spark Plug Boot | |
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. | Spark Plug | |
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 |
|
| plug and tighten securely with a wrench. |
|
4. | Reinstall the spark plug boot. |
|
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.
Gearbox holes
Blade
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
Hole
SEngine will not idle when the throttle is re- leased.
SThe 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.
STurn 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.
Flat sides | TO REMOVE |
Washer
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:
Idle Speed
Adjustment
Screw
If you require further assistance or are unsure about performing this procedure, contact an authorized service dealer or call
9
