MAINTENANCE AND REPAIR INSTRUCTIONS
IDLE SPEED ADJUSTMENT
NOTE:
Careless adjustments can seriously damage the unit.
An authorized service dealer should make carburetor
adjustments.
If, after checking the fuel mixture and cleaning the air filter, the
engine still will not idle, adjust the idle speed screw as follows:
1. Start the engine and run for one minute to warm up.
Refer to
Starting/Stopping Instructions.
2. Release the throttle trigger and let the engine idle. If the engine
stops, insert a small phillips screwdriver into the idle
adjustment screw (Fig. 36). Turn the idle speed screw
clockwise
1/8 of a turn at a time (as needed) until the engine
idles smoothly.
3. If the engine appears to be idling too fast, turn the idle speed
screw
counterclockwise
1/8 of a turn at a time (as needed),
to reduce idle speed.
Checking the fuel mixture, cleaning the air filter and adjusting
the idle speed should solve most engine problems. If not and all
of the following are true:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor adjusted by an authorized service dealer.
REPLACING THE SPARK PLUG
Use replacement #
753-06193
, a
Champion RDJ7J
spark plug, or
equivalent. The correct air gap is
0.025 inch (0.635 mm)
.
1. Stop the engine and allow it to cool. Grasp the plug wire
firmly and pull it from the spark plug.
2. Clean around the spark plug. Remove the spark plug from the
cylinder head by turning a 5/8-inch socket counterclockwise.
3. Replace a cracked, fouled or dirty spark plug. Set the air gap at
0.025 in. (0.635 mm)
using a feeler gauge (Fig. 37).
4. Install a correctly-gapped spark plug in the cylinder head.
Tighten by turning the 5/8-inch socket clockwise until snug.
If using a torque wrench torque to:
110-120 in.•lb. (12.3-13.5
N•m)
Do not over tighten.
CLEANING
Use a small brush to clean off the outside of the unit. Do not
use strong detergents. Household cleaners that contain
aromatic oils such as pine and lemon, and solvents such as
kerosene, can damage plastic housing or handle. Wipe off any
moisture with a soft cloth.
STORAGE
• Never store a fueled unit where fumes may reach an open
flame or spark.
• Allow the engine to cool before storing.
• Store the unit locked up to prevent unauthorized use or
damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
LONG TERM STORAGE
If planning on storing the unit for an extended time, use the
following storage procedure:
1. Drain all fuel from the fuel tank into a container with the
same 2-cycle fuel mixture. Do not use fuel that has been
stored for more than 30 days. Dispose of the old fuel/oil mix
in accordance to Federal, State and Local regulations.
2. Start the engine and allow it to run until it stalls. This ensures
that all fuel has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 3-5
drops of any high quality motor oil or 2-cycle oil into the
cylinder. Pull the starter rope slowly to distribute the oil.
Reinstall the spark plug.
NOTE:
Remove the spark plug and drain all of the oil from the
cylinder before attempting to start the unit after storage.
4. Thoroughly clean the unit and inspect it for any loose or
damaged parts. Repair or replace damaged parts and tighten
loose screws, nuts or bolts. The unit is ready for storage.
WARNING:
The cutting attachment will spin
during idle speed adjustments. Wear protective
clothing and observe all safety instructions to
prevent serious personal injury.
Fig. 37
0.025 in.
(0.635 mm.)
WARNING:
Do not sand blast, scrape or clean
electrodes. Grit in the engine could damage the
cylinder.
WARNING:
To avoid serious personal injury,
always turn the unit off and allow it to cool
before you clean or service it.
13
Fig. 36
Idle Speed Screw
