Craftsman 316.7919 User Manual

Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.

Visit our website: www.sears.com/craftsman

CAUTION: Before using this product, read this manual and follow all safety rules and operating instructions.

Operator’s Manual

2-Cycle WEEDWACKER

GAS TRIMMER

Model No. 316.791900

• SAFETY

• ASSEMBLY

• OPERATION

• MAINTENANCE

• PARTS LIST

• ESPAÑOL, P. 13

769-03836A 3/08

• IMPORTANT SAFETY INSTRUCTIONS •

READ ALL INSTRUCTIONS BEFORE OPERATING

• Read the instructions carefully. Be familiar with the controls and proper use of the unit.

• Do not operate this unit when tired, ill or under the influence of alcohol, drugs or medication.

• Children must not operate the unit. Teens must be accompanied and guided by an adult.

• Inspect the unit before use. Replace damaged parts. Check for fuel leaks. Make sure all fasteners are in place and secure. Replace cutting attachment parts that are cracked, chipped or damaged in any way.

• Use only Hassle Free™ XTRA QUIET Spiral Line. Never use metal-reinforced line, wire, chain or rope. These can break off and become dangerous projectiles.

• Be aware of risk of injury to the head, hands and feet.

• Clear the area to be cut before each use. Remove rocks, broken glass, nails, wire, string and other objects which may be thrown or become entangled in the cutting attachment. Clear the area of children, bystanders and pets; keep them outside a 50-foot (15 m) radius, at a minimum. Even then, they are still at risk from thrown objects. Encourage bystanders to wear eye protection. If you are approached, stop the unit immediately.

• Squeeze the throttle control and check that it returns automatically to the idle position. Make all adjustments or repairs before using the unit.

FUEL SAFETY WARNINGS

• Store fuel only in containers specifically designed and approved for the storage of such materials.

• Always stop the engine and allow it to cool before filling the fuel tank. Never remove the fuel tank cap or add fuel when the engine is hot. Never operate the unit without the fuel cap securely in place.

• Loosen the fuel tank cap slowly to relieve any pressure in the tank.

• Mix and add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Remove the fuel cap slowly, and only after the engine stops. Do not smoke while fueling or mixing fuel. Wipe up any spilled fuel from the unit immediately.

• Avoid creating a source of ignition for spilled fuel. Do not start the engine until fuel vapors dissipate.

• Move the unit at least 30 feet (9.1 m) from the fueling source and site before starting the engine. Do not smoke. Keep sparks and open flames away from the area while adding fuel or operating the unit.

WHILE OPERATING

• Never start or run the unit inside a closed room or building. Breathing exhaust fumes can be fatal. Operate this unit only in a well-ventilated outdoor area.

• Wear safety glasses or goggles that meet ANSI Z87.1–1989 standards and are marked as such. Wear ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty.

• Wear heavy long pants, boots, gloves and a long sleeve shirt. Do not wear loose clothing, jewelry, short pants, sandals or go barefoot. Secure hair above shoulder level.

All information, illustrations, and specifications in this manual are based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice.

TABLE OF CONTENTS

Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Maintenance and Repair Instructions . . . . . . . . . . . . . . . . . . . . . . .7

Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E14

Service Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover

RULES FOR SAFE OPERATION

SPARK ARRESTOR NOTE NOTE: For users on U.S. Forest Land and in the states of California,

Maine, Oregon and Washington. All U.S. Forest Land and the state of

California (Public Resources Codes 4442 and 4443), Oregon and Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-covered areas be equipped with a spark arrestor, maintained in effective working order, or the engine be constructed, equipped and maintained for the prevention of fire. Check with your state or local authorities for regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability or a fine. This unit is factory equipped with a spark arrestor. If it requires replacement, ask your LOCAL SERVICE DEALER to install the

Accessory Part #753-05169 Spark Arrestor Kit.

CALIFORNIA PROPOSITION 65 WARNING

WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS

CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE

CANCER, BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.

Read the Operator’s Manual and follow all warnings and safety instructions. Failure to do so can result in serious injury to the operator and/or bystanders.

FOR QUESTIONS, CALL 1-800-659-5917

SYMBOL MEANING

WARNING:

Failure to obey a safety warning can result in injury to yourself and others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

CAUTION:

Failure to obey a safety warning may result in property damage or personal injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and their explanations, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.

SAFETY ALERT:

Indicates danger, warning or caution. Attention is required in order to avoid serious personal injury. May be used in conjunction with other symbols or pictographs.

NOTE: Advises you of information or instructions vital to the

operation or maintenance of the equipment.

DANGER:

Failure to obey a safety warning will result in serious injury to yourself or to others. Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

WARNING:

Gasoline is highly flammable and its vapors

can explode if ignited. Take the following precautions:

WARNING:

When using the unit, you must follow the safety rules. Please read these instructions before operating the unit in order to ensure the safety of the operator and any bystanders. Please keep these instructions for later use.

RULES FOR SAFE OPERATION

• The cutting attachment shield must always be in place while operating the unit. Do not operate unit without both trimming lines extended, and the proper line installed. Do not extend the trimming line beyond the length of the shield.

• This unit has a clutch. The cutting attachment remains stationary when the engine is idling. If it does not, take the unit to a Sears or other qualified service dealer for an adjustment.

• Adjust the D-handle to your size in order to provide the best grip.

• Be sure the cutting attachment is not in contact with anything before starting the unit.

• Use the unit only in daylight or good artificial light.

• Avoid accidental starting. Be in the starting position whenever pulling the starter rope. The operator and unit must be in a stable position while starting. Refer to Starting/Stopping Instructions.

• Use the right tool. Only use this tool for its intended purpose.

• Always hold the unit with both hands when operating. Keep a firm grip on both handles or grips.

• Keep hands, face, and feet away from all moving parts. Do not touch or try to stop the cutting attachment when it rotates.

• Do not touch the engine, gear housing or muffler. These parts get extremely hot from operation, even after the unit is turned off.

• Do not operate the engine faster than the speed needed to cut, trim or edge. Do not run the engine at high speed when not cutting.

• Always stop the engine when cutting is delayed or when walking from one cutting location to another.

•

If you strike or become entangled with a foreign object, stop the engine immediately and check for damage. Do not operate before repairing damage. Do not operate the unit with loose or damaged parts.

• Turn the engine to off and disconnect the spark plug for maintenance or repair.

• Use only replacement parts or accessories recommended for this tool that are distributed by Sears or a Craftsman outlet. Use of any replacement parts or accessories purchased elsewhere may be hazardous, and will also void your warranty.

• Keep unit clean of vegetation and other materials. They may become lodged between the cutting attachment and shield.

• To reduce fire hazard, replace a faulty muffler and spark arrestor. Keep the engine and muffler free from grass, leaves, excessive grease or carbon build up.

OTHER SAFETY WARNINGS

• Never store the unit with fuel in the tank, inside a building where fumes may reach an open flame (pilot lights, etc.) or sparks (switches, electrical motors, etc.).

• Allow the engine to cool before storing or transporting. Be sure to secure the unit while transporting.

• Store the unit in a dry place, secured or at a height to prevent unauthorized use or damage. Keep out of the reach of children.

• Never douse or squirt the unit with water or any other liquid. Keep handles dry, clean and free from debris. Clean after each use, see Cleaning and Storage instructions (p. 11).

• Keep these instructions. Refer to them often and use them to instruct other users. If you loan this unit to others, also loan them these instructions.

SAVE THESE INSTRUCTIONS

This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's manual for complete safety, assembly, operating and maintenance and repair information.

• SAFETY & INTERNATIONAL SYMBOLS •

SYMBOL MEANING SYMBOL MEANING

• SAFETY ALERT SYMBOL

Indicates danger, warning or caution. May be used in conjunction with other symbols or pictographs.

• WARNING - READ OPERATOR'S MANUAL

Read the operator’s manual(s) and follow all warnings and safety instructions. Failure to do so can result in serious injury to the operator and/or bystanders.

• WEAR EYE AND HEARING PROTECTION

WARNING:

Thrown objects and loud noise can cause severe eye injury and hearing loss. Wear eye protection meeting ANSI Z87.1-1989 standards and ear protection when operating this unit. Use a full face shield when needed.

• UNLEADED FUEL

Always use clean, fresh unleaded fuel

• ON/OFF STOP CONTROL

ON / START / RUN

• ON/OFF STOP CONTROL

OFF or STOP

• HOT SURFACE WARNING

Do not touch a hot muffler or cylinder. You may get burned. These parts get extremely hot from operation. When turned off they remain hot for a short time.

• KEEP BYSTANDERS AWAY

WARNING: Keep all bystanders, especially children

and pets, at least 50 feet (15 m.) from the operating area.

• THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY

WARNING: Small objects can be propelled at high

speed, causing injury. Keep away from the rotating rotor.

• PRIMER BULB

Push primer bulb, fully and slowly, 10 times.

• OIL

Refer to operator’s manual for the proper type of oil.

• SHARP BLADE

WARNING:

Sharp blade on cutting attachment shield.

To prevent serious injury, do not touch the line cutting blade.

CRAFTSMAN FULL WARRANTY

If this Craftsman product fails due to a defect in material or workmanship within two years from the date of purchase, return it to any Sears store, Parts & Repair Service Center, or other Craftsman outlet in the United States for free repair (or replacement if repair proves impossible).

This warranty applies for only 90 days from the purchase date if this product is ever used for commercial or rental purposes.

This warranty covers ONLY defects in material and workmanship. Sears will NOT pay for:

• Expendable items that can wear out from normal use within the warranty period, such as cutting line, filters or spark plugs.

• Repairs necessary because of accident or failure to operate or maintain the product according to all supplied instructions.

• Preventive maintenance, or repairs necessary due to improper fuel mixture, contaminated or stale fuel. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Sears, Roebuck and Co., Hoffman Estates, IL 60179

WARRANTY STATEMENT

KNOW YOUR UNIT

Cutting Shield

Fuel Cap

D-Handle

Hassle Free®Plus Cutting Head

Shaft Grip

Shaft Housing

Starter

Rope Grip

Throttle Control

Air Filter/

Muffler Cover

Spark Plug

Muffler

Convertible™

Coupler

On/Off Stop Control

APPLICATIONS

As a trimmer:

• Cutting grass and light weeds.

• Edging

• Decorative trimming around trees, fences, etc. Other optional accessories may be used with this unit.

Shoulder Strap

Loop

Primer Bulb

Line Cutting

Blade

ADJUSTING THE D-HANDLE

1. Using a flathead or T-25 screwdriver, loosen the 4 screws on the D-handle enough to loosen it (Fig. 1).

2. Rotate the D-Handle to the upright position on the front side of the shaft housing (Fig. 1).

3. Hold the unit in the operating position (Fig. 8). If necessary, reposition the Dhandle to the location that provides the best grip.

4. Tighten the 4 screws until the Dhandle is secure.

ASSEMBLY INSTRUCTIONS

INSTALLING THE TRIMMER ATTACHMENT

Prior to use, make sure trimmer attachment is installed correctly. Please refer to Operating the Convertible™ Coupler System for proper installation.

NOTE: Remove red cap or hanger from lower shaft housing prior to

assembling to Convertible™ coupler

Trimmer Attachment

Fig. 1

OIL AND FUEL MIXING INSTRUCTIONS

Old and/or improperly mixed fuel are the main reasons for the unit not running properly. Be sure to use fresh, clean unleaded fuel. Follow the instructions carefully for the proper fuel/oil mixture.

Definition of Blended Fuels

Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol, or MTBE (ether). Alcohol-blended fuel absorbs water. As little as 1% water in the fuel can make fuel and oil separate. It forms acids when stored. When using alcohol-blended fuel, use fresh fuel (less than 60 days old).

Using Blended Fuels

If you choose to use a blended fuel, or its use is unavoidable, follow recommended precautions:

• Always use the fresh fuel mix explained in your operator's manual

• Always agitate the fuel mix before fueling the unit

• Drain the tank and run the engine dry before storing the unit

Using Fuel Additives

The bottle of 2-cycle oil that came with your unit contains a fuel additive which will help inhibit corrosion and minimize the formation of gum deposits. It is recommended that you use our 2-cycle oil with this unit. If unavailable, use a good 2-cycle oil de-signed for air-cooled engines along with a fuel additive, such as STA-BIL

Gas Stabilizer or an equivalent. Add 0.8 oz. (23 ml.) of fuel additive per gallon of fuel according to the instructions on the container. NEVER add fuel additives directly to the unit's fuel tank.

Thoroughly mix the proper ratio of 2-cycle engine oil with unleaded gasoline in a separate fuel can. Use a 40:1 fuel/oil ratio. Do not mix them directly in the engine fuel tank. See the table below for specific gas and oil mixing ratios.

NOTE: One gallon (3.8 liters)

of unleaded gasoline mixed with one 3.2 oz. (95 ml.) bottle of 2-cycle oil makes a 40:1 fuel/oil ratio.

NOTE: Dispose of the old

fuel/oil mix in accordance to Federal, State and Local regulations.

OIL & FUEL INFORMATION

UNLEADED GAS 2 CYCLE OIL

1 GALLON US

(3.8 LITERS)

3.2 FL. OZ. (95 ml)

1 LITER 25 ml

MIXING RATIO - 40:1

STARTING INSTRUCTIONS

STARTING/STOPPING INSTRUCTIONS

1. Mix gas with oil. See

Oil and Fuel Mixing Instructions.

2. Fill the fuel tank with the fuel/oil mixture.

NOTE: There is no need

to turn the unit on. The On/Off Stop Control is in the ON ( I ) position at all times (Fig. 2).

Fully press and release the primer bulb 10 times, slowly. Some amount of fuel should be visible in the primer bulb and fuel lines (Fig. 3). If you can’t see fuel in the bulb, press and release the bulb as many times as it takes until you can see fuel in it.

Crouch in the starting position (Fig. 4). Do not squeeze the throttle, and pull the starter rope with a controlled and steady motion until the unit starts. Wait 10 to 15 seconds, then squeeze the throttle to control the cutting speed.

NOTE:

The unit uses the INCREDI-PULL™ starting system, which significantly reduces the effort required to start the engine. You must pull the starter rope out far enough to hear the engine attempt to start. There is no need to pull the rope briskly-- there is no harsh resistance when pulling. Be aware that this starting method is vastly different from (and much easier than) what you may be used to.

IF... The engine does not start, go back to step 3. NOTE: If the unit is hot and fails to start within 3 pulls of the

starter rope, squeeze the throttle control and pull the starter rope until the unit starts.

STOPPING INSTRUCTIONS

1. Release your hand from the throttle control. Allow the engine to cool down by idling.

2. Press and hold On/Off Stop Control in the OFF (O) position until engine comes to a complete stop (Fig. 2).

CAUTION:

For proper engine operation and maximum reliability, pay strict attention to the oil and fuel mixing instructions on the 2-cycle oil container. Using improperly mixed fuel can severely damage the engine.

WARNING:

Gasoline is extremely flammable. Ignited vapors may explode. Always stop the engine and allow it to cool before filling the fuel tank. Do not smoke while filling the tank. Keep sparks and open flames at a distance from the area.

WARNING:

Remove fuel cap slowly to avoid injury from fuel spray. Never operate the unit without the fuel cap securely in place.

WARNING:

Add fuel in a clean, well ventilated outdoor area. Wipe up any spilled fuel immediately. Avoid creating a source of ignition for spilt fuel. Do not start the engine until fuel vapors dissipate.

WARNING:

Operate this unit only in a well-ventilated outdoor area. Carbon monoxide exhaust fumes can be lethal in a confined area.

WARNING:

Avoid accidental starting. Make sure you are in the starting position when pulling the starter rope (Fig. 5). To avoid serious injury, the operator and unit must be in a stable position while starting.

Start/On ( I )

Stop/Off (O)

Throttle Control

Fig. 2

Starting Position

Throttle Control

Fig. 4

Primer Bulb

Fig. 3

OPERATING INSTRUCTIONS

OPERATING THE CONVERTIBLE™ COUPLER SYSTEM

The Convertible™ coupler system enables the use of these optional attaachments.

• Edger

• Cultivator

• Turbo Blower

• Brushcutter

• Pole Saw

• Blade Pruner

• Hedge Trimmer

REMOVING THE TRIMMER ATTACHMENT OR OTHER ATTACHMENT

1. Turn the knob counterclockwise to loosen (Fig. 7).

2. Press and hold the release button (Fig. 5).

3. While firmly holding the upper shaft housing, pull the trimmer attachment or other attachment straight out of the Convertible™ coupler (Fig. 6).

REMOVING THE TRIMMER ATTACHMENT OR OTHER ATTACHMENT

NOTE: To make installing or

removing the attachment easier, place the unit on the ground or on a work bench.

1. Turn knob counterclockwise to loosen (Fig. 7).

2. While firmly holding the trimmer attachment or other attachment, push it straight into the Convertible™ coupler until the release button snaps firmly into the primary hole (Fig. 6).

NOTE: Aligning the release

button with the guide recess will help installation (Fig. 5).

3. Turn the knob clockwise to tighten (Fig. 7).

For decorative edging with the line head trimmer attachment or other attachment, lock the release button of the attachment into the 90° hole (Fig. 7).

HOLDING THE TRIMMER

Before operating the unit, stand in the operating position (Fig. 8). Check for the following:

• The operator is wearing eye protection and proper clothing

• With a slightly-bent right arm, the operator’s hand is holding the shaft grip

• The operator’s left arm is slightly bent, the left hand holding the D-handle

• The unit is at waist level

• The trimmer attachment is parallel to the ground and easily contacts the grass without the need to bend over

TIPS FOR BEST TRIMMING RESULTS

• Keep the trimmer attachment parallel to the ground.

•

Cut from left to right whenever possible. Cutting to the right improves the unit's cutting efficiency. Clippings are thrown away from the operator.

• Trim only when grass and weeds are dry.

• The life of your cutting line is dependent upon:

- Following the trimming tips

- What vegetation is being cut

- Where vegetation is being cut

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all vegetation around trees, posts, fences and more. Rotate the whole unit so that the trimmer attachment is at a 30° angle to the ground (Fig. 9).

WARNING:

Always wear eye, hearing, foot and body

protection to reduce the risk of injury when operating this unit.

WARNING:

Before you begin using any attachment, read and understand the manual that came with the attachment. Follow all safety information contained within.

CAUTION:

Before operating this unit, be sure that the release button is fully snapped into the primary hole (Fig. 12), and that the knob (Fig. 13) is securely tightened.

WARNING:

To avoid serious personal injury and damage to the unit, shut the unit off before removing or installing all attachments.

CAUTION:

These attachments are to be snapped into the primary hole only. Using the wrong hole could lead to personal injury or damage to the unit.

Release Button

Convertible™

Coupler

Guide Recess

Fig. 5

90˚ Edging Hole

(Trimmer Only)

Knob

Fig. 7

Primary Hole

Lower Shaft

Housing

Fig. 6

Upper Shaft

Housing

Fig. 8

Fig. 9

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up.

NOTE:

Some maintenance procedures may require special tools or skills. If you are unsure about these procedures take your unit to Sears or other qualified service dealer. Call 1-800-4-MY-HOME

for more information.

NOTE: Maintenance, replacement, or repair of the emission

control devices and system may be performed by a Sears or other qualified service dealer. Call 1-800-4-MY-HOME

for more information.

In order to assure peak performance of your engine, inspection of the engine exhaust port may be necessary after 50 hours of operation. If you notice lost RPM, poor performance or general lack of acceleration, this service may be required. If you feel your engine is in need of this inspection, refer service to a Sears or other qualified service dealer. Call 1-800-4-MY-HOME

for more information. DO NOT attempt to

perform this process yourself as engine damage may result from contaminants involved in the cleaning process for the port.

WARNING:

To prevent serious injury, never perform maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that the unit cannot start.

OPERATING INSTRUCTIONS

MAINTENANCE & REPAIR INSTRUCTIONS

AIR FILTER MAINTENANCE

The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow and change the air/fuel mixture. This is often mistaken for an out of adjustment carburetor. Check the condition of the air filter before adjusting the idle speed screw. Refer to Air Filter Maintenance.

Removing the Air Filter/Muffler Cover

1. Remove the four (4) screws securing the air filter/ muffler cover (Fig. 14). Use a flat blade or T20 Torx bit screwdriver.

2. Pull the cover from the engine. Do not force.

Cleaning the Air Filter

Failure to maintain your air filter properly can result in poor performance or can cause permanent damage to your engine.

1. Remove air filter/muffler cover. Refer to Removing

the Air Filter/Muffler Cover above.

Turn cover over and look inside to locate the air filter. Remove the air filter from inside the air filter/muffler cover (Fig. 15).

3. Wash the filter in detergent and water (Fig. 16). Rinse the filter thoroughly. Squeeze out excess water. Allow it to dry completely.

4. Apply enough clean SAE 30 oil to lightly coat the filter (Fig. 17).

5. Squeeze the filter to spread and remove excess oil (Fig. 18).

6. Replace the air filter inside the air filter/muffler cover (Fig. 15).

NOTE: Operating the unit

without the air filter and air filter/muffler cover assembly will VOID the warranty.

Reinstalling the Air Filter/Muffler Cover

1. Place the air filter/muffler cover over the back of the carburetor and muffler. Align the screw holes.

2. Insert the four (4) screws into the holes in the air filter/muffler cover (Fig.

14) and tighten. Do not

over tighten.

MAINTENANCE & REPAIR INSTRUCTIONS

WARNING:

To avoid serious personal injury, always turn your unit off and allow it to cool before you clean or service it.

LINE REPLACEMENT

for Hassle-Free™ Plus Cutting Head

Always use Craftsman Hassle-Free™ XTRA QUIET Spiral Line. Choose the line size best suited for the job at hand. Red colored line is designed for cutting grass and small weeds. Black colored line is designed for cutting larger weeds and light brush.

NOTE: Before inserting new line into the holes in the cutting head,

identify the proper holes. Follow directions as shown on the glide plate. Do Not attempt to remove the cutting head from the unit when replacing line.

NOTE: Do not mix lines. Use 2 black or 2 red only.

1. Remove the old line and line glide plate from the cutting head.

2. Clean entire surface of cutting head.

3. Reinstall line glide plate (Fig. 10). The glide plate is a keyed item and will only fit one way. If it does not go into the cutting head smoothly, DO NOT force it. Rotate the glide plate until it slides into the cutting head easily.

NOTE: The glide plate must be

installed in the cutting head before inserting new line.

4. Insert both ends of your line through the insertion holes in the side of the cutting head (Fig. 10).

Push and/or pull the line so that the line is snug against the hub and is fully extended through the positioning tunnels (Fig. 11).

6. Correctly installed line will be the same length on both sides (Fig. 12).

NOTE: Make sure that when

installing new line, that the line is as close to even as possible. Any variation in lengths may cause the unit to vibrate excessively. If this happens, stop the unit and make sure the line is even.

7. Repeat steps 4 thru 6 to install the second trimmer line.

8. Correctly installed, the four lines will all be the same length (Fig. 13).

Some line breakage will occur from:

• Entanglement with foreign matter

• Normal line fatigue

• Attempting to cut thick, stalky

weeds

• Forcing the line into objects

such as walls or fence posts

NOTE: During normal use the

trimming line may become worn unevenly which may cause excessive vibrations in the unit. If this becomes uncomfortable or uncontrollable, stop the unit and replace the line. Refer to the Line Replacement instructions above.

FREQUENCY MAINTENANCE REQUIRED SEE

Before starting engine

Fill fuel tank with fresh fuel p. 5

Every 10 hours Clean and re-oil air filter p. 7 Every 25 hours Check and clean spark arrestor

Check spark plug condition and gap

p. 8 p. 8

Every 50 hours Inspect exhaust port and spark

arrestor screen for clogging or obstruction

p. 8

Screws

Fig. 14

Screws

Air Filter

Fig. 15

Fig. 16

Fig. 17

Fig. 18

Inside Muffler C over

Positioning

Tunnel

Trimming

Line

Fig. 10

Insertion

Holes

Glide Plate

Fig. 11

Fig. 12

Fig. 13

TRANSPORTING

• Allow the engine to cool before transporting.

• Drain fuel from unit.

• Tighten fuel cap before transporting.

• Secure the unit while transporting.

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 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.

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.

Locate the muffler, but do not remove it. Find the screw on the bottom of the muffler (Fig. 19). 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.

3. Using a small flat blade screwdriver, carefully pry up the spark arrestor screen from the recessed hole, taking care to notice that the “raised” part of the spark arrestor screen is inside the recessed hole. Remove the spark arrestor screen from the muffler.

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).

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.

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. 20).

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.

5. Reattach the plug boot.

MAINTENANCE & REPAIR INSTRUCTIONS

Screws

Fig. 19

Ta bs

Spark Arrestor Hood

0.025 in.

(0.635 mm)

Fig. 20

WARNING:

If the spark arrestor hood and spark arrestor screen are not tightened securely, they could fall off causing damage to the unit and possible serious personal injury.

WARNING:

Do not sand blast, scrape or clean spark plug electrodes. Grit in the engine could damage the cylinder.

WARNING:

To avoid serious personal injury, always turn your

trimmer off and allow it to cool before you clean or maintain it.

Spark Arrestor

Screen

Muffler

Engine

Slots

Empty fuel tank Fill fuel tank with properly mixed fuel Primer bulb wasn't pressed enough Press primer bulb fully and slowly 10 times Engine is flooded Pull the starter rope while holding the throttle control Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture Fouled spark plug Replace the spark plug Plugged spark arrestor Clean or replace spark arrestor The outside temperature is below 40º F Pull the starter rope up to 10-15 times The outside temperature is above 90º F Pull the starter rope up to 10-15 times

TROUBLESHOOTING

Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture Improper carburetor adjustment Take to a Sears authorized service dealer for an adjustment Cutting attachment bound with grass Stop the engine and clean the cutting attachment Dirty air filter Clean or replace the air filter Plugged spark arrestor Clean or replace spark arrestor

PROBLEM SOLUTION

Air filter is plugged Replace or clean the air filter Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture Improper carburetor adjustment Take to a Sears authorized service dealer for an adjustment

Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture Improper carburetor adjustment Take to a Sears authorized service dealer for an adjustment Air filter is plugged Replace or clean air filter Fouled spark plug Replace the spark plug Plugged spark arrestor Clean or replace spark arrestor

ENGINE WILL NOT START

ENGINE WILL NOT IDLE

ENGINE WILL NOT ACCELERATE

ENGINE LACKS POWER OR STALLS WHEN CUTTING

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