MAINTENANCE & REPAIR INSTRUCTIONS
Adjust Idle Speed Screw | CLEANING |
WARNING: The cutting attachment may spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.
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 let it run at a high idle for a minute to warm up. Refer to Starting/Stopping Instructions (p. 7).
2.Release the throttle trigger and let the engine idle. If the engine stops, insert a small phillips or flat blade screwdriver into the hole in the air filter/muffler cover (Fig. 20). Turn the idle speed screw in, 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, have the carburetor adjusted by a Sears or other qualified service dealer. Call
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 | 0.025 in. |
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cool. Grasp the plug boot |
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(0.635 mm) |
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firmly and pull it from the spark |
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plug. |
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2. Clean around the spark plug. |
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Remove the spark plug from |
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| Fig. 21 |
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the cylinder head by turning a |
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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. 21).
WARNING: Do not sand blast, scrape or clean spark plug electrodes. Grit in the engine could damage the cylinder.
4.Install a
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.
WARNING: To avoid serious personal injury, always turn your trimmer off and allow it to cool before you clean or maintain it.
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,
•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.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
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.
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