Spark Arrestor Maintenance, Transporting

SPARK ARRESTOR MAINTENANCE

NOTE: Pay close attention when disassembling the muffler so you can put it back together correctly. Failure to do so will damage the unit and may cause serious personal injury.

1.Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover.

2.Locate the muffler, but do not remove it. Find the screw on the bottom of the muffler (Fig. 18).This screw holds the Spark Arrestor Hood Assembly and the spark arrestor screen to the bottom of the

muffler. Remove this screw using either a Torx T20 or flat blade screwdriver.

Spark Arrestor Hood

Engine

screwdriver, carefully pry

3. Using a small flat bladej Slo_ up the spark arrestor

hole, taking care to notice that the "raised" part of

thescreensparkfromarrestorthe recessedscreen _r_ew_ _ is inside the recessed hole. S

Remove the spark arrestor	Tabs	Screen	Muffler
screen from the muffler.		Fig. 18

4.Clean the spark arrestor screen with a wire brush. Replace it if it is damaged, or if you are unable to clean it thoroughly.

5.Reinstall the spark arrestor screen by putting the "raised" portion of the screen inside the recessed hole of the muffler. Make sure that the spark arrestor screen fits flat against the muffler.

6.Place the spark arrestor hood on top of the spark arrestor plate with the "raised" side up and the opening facing AWAY from the engine (Fig. 18). Verify that the exhaust will be directed AWAY from the engine.

7.Replace the screw you removed in Step 2 and tighten securely.

8.Reinstall the air filter/muffler cover (Fig. 13).

screen are not tightened securely, they could fall off causing

I _I_ WARN ING: If the spark arrestor hood and spark arrestor damage to the unit and possible serious personal injury.

CARBURETOR ADJUSTMENT

NOTE: Careless adjustments can seriously damage your unit. Contact a Sears or other qualified service dealer to make carburetor adjustments. Call 1-800-4-MY-HOME® for more information.

REPLACING THE SPARK PLUG

Use a Champion RDJ7Y spark plug or equivalent. Remove the plug after every 25 hours of operation and check its condition.

1.Stop the engine and allow it to cool. Grasp the plug boot 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.

I_	electrodes. Grit in the engine could damage the cylinder.
	WARNING:	Do not sand blast'scrape °r clean spark plug I

3.Replace a cracked, fouled

or dirty	spark plug. Set		_'-
the air gap at 0.025 in.
(0.635	ram}	using a feeler
gauge	(Fig.	19).
4. Install a correctly-gapped
spark plug in the cylinder
head. Tighten by turning the			0.025 in.
5/8-inch socket clockwise			(0.635 ram) t
until snug. If using a torque
wrench, torque to:			Fig. 10
110-120 in.°lb. (12.3-13.5			N°m}. Do not over-tighten.

5.Reattach the plug boot.

TRANSPORTING

°Allow the engine to cool before transporting.

°Drain fuel from unit.

°Tighten fuel cap before transporting.

°Secure the unit while transporting.

CLEANING

,l_l	WARNING" To avoid serious personal injury, always turn your
	tr mmer off and a ow t to coo before you c ean or manta n t.

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 you plan on storing the unit for an extended time, use the following storage procedure:

1.Carefully drain the fuel tank by running the unit dry or remove fuel cap and tip the motor housing over and drain oil/gas fuel into a container with the same 2-cycle fuel mixture. Do not use fuel that has been stored for more than 60 days.

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 1 oz. (30 ml) 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 trimmer 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.