MTD 41BD380C799 Owner’s Manual

Operator's Manual

2-Cycle

WEEDWACKER® GAS TRIMMER

Model No. 316.791191

o SAFETY

ASSEMBLY

OPERATION

MAINTENANCE PARTS LIST

ESPANOL, R 13

CAUTION: Before using this product, read this manual

and follow all safety rules and operating instructions.

Sears Brands Management Corporation, Hoffman Estates, IL 60179 U.S.A.

Visit our website: www.craftsrnan.corn

769-06145 P00 06/10

CALIFORNIA PROPOSITION 65 WARNING

THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS CHEMICALS

KNOWN TO THE STATE OF CALiFORNiA TO CAUSE CANCER, BIRTH

DEFECTS OR OTHER REPRODUCTIVE HARM.

TABLE OF CONTENTS

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

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

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

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

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

Starting/Stopping Instructions ................................... 6

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

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

Cleaning and Storage .......................................... 9

Troubleshooting Chart ........................................ 10

Specifications ............................................... 11

Parts List ................................................... 30

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

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=06182 Muffler Assembly

The purpose of safety symbols is to attract your attention to possible I 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. J

SYMBOL MEANING

Attention is required in order to avoid serious personal injury. May

SAFETY ALERT: Indicates danger, warning or caution.

be used in conjunction with other symbols or pictographs.

NOTE: Advises of information or instructions vital to the operation or

I _ _DANGER: Failure to obey a safety warning will result in serious

NOTE= This Unit Can Use a Plug-In Power Start or Power Bit Start

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=4=MY=HOME®

maintenance of the equipment.

injury to yourself or to others. Always follow the safety precautions

to reduce the risk of fire, electric shock and personal injury.

to yourself and others. Always follow the safety precautions to

WARNING: Failure to obey a safety warning can result in injury

reduce the risk of fire, electric shock and personal injury.

property damage or personal injury to yourself or to others.

CAUTION: Failure to obey a safety warning may result in

Always follow the safety precautions to reduce the risk of fire, electric shock and personal injury.

Optional Accessory!

Please refer to the Plug-In Power Start or Power Bit Start

operator's manual for proper use of these features. (Items Sold Separately! Please refer to page 9 of this manual for more

information about purchasing these accessories.)

,, IMPORTANT SAFETY INSTRUCTIONS ,,

READ ALL INSTRUCTIONS BEFORE OPERATING

WARNING: When using the unit, all safety rules must be

followed. 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.

• 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 and teens under the age of 15 must not use the unit, except for

teens guided by an adult. All guards and safety attachments must be installed properly before

operating the unit. Inspect the unit before use. Replace damaged parts. Check for fuel leaks.

Make sure all fasteners are in place and secure. Replace parts that are cracked, chipped, or damaged in any way. Do not operate the unit with

loose or damaged parts. Carefully inspect the area before starting the unit. Remove all debris and

hard or sharp objects such as glass, wire, etc. Be aware of the risk of injury to the head, hands and feet.

Clear the area of children, bystanders, and pets. At a minimum, keep all children, bystanders, and pets outside a 50 feet (15 m)radius; there still may

be a risk to bystanders from thrown objects. Bystanders should be encouraged to wear eye protection. If approached, stop the unit immediately.

Use only 0.095 inch (2.41 mm) diameter original equipment manufacturer replacement line. Never use metal-reinforced line, wire or rope. These can

break off and become dangerous projectiles. Squeeze the throttle control and check that it returns automatically to the

idle position. Make all adjustments or repairs before using unit.

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.

SAFETY WARNINGS FOR GAS UNITS

WARNING:

exp ode f gn ted. Take the fo ow ng precaut ons:

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.

Always loosen the fuel tank cap slowly to relieve any pressure in the tank

before fueling. Do not smoke.

Always mix and add fuel in a clean, well-ventilated outdoor area where there are no sparks or flames. Do not smoke.

Never operate the unit without the fuel cap securely in place.

Avoid creating a source of ignition for spilled fuel. Wipe up any spilled fuel from the unit immediately before starting the engine. Move the unit at

least 30 feet (9.1 m) from the fueling source and site before starting the

engine. Do not smoke.

Never start or run the unit inside a closed room or building. Breathing exhaust

fumes can kill. Only operate this unit in a well-ventilated outdoor area.

WHILE OPERATING

Never start or run the unit inside a closed room or building. Breathing exhaust

fumes can kill. Operate this unit only in a well ventilated outdoor area. Wear safety glasses or goggles that are marked as meeting ANSI Z87.1 -

1989 standards. Also wear ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty. Long sleeve shirts

are recommended. Wear heavy, long pants, boots and gloves. Do not wear loose clothing,

jewelry, short pants, sandals or go barefoot. Secure hair above shoulder level. The cutting head 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.

Gasoline is highly flammable and its vapors can

• The cutting attachment may spin during idle speed adjustments. Wear protective clothing and observe all safety instructions to prevent serious

personal injury.

• Adjust the position of the D-handle to provide the best grip.

• Be sure the cutting head is not incontact with anything before starting the unit.

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

• Avoid accidental starting. Be inthe starting position whenever pulling the

starter rope. The operator and unit must be in a stable position while starting. See Starting/Stopping Instructions.

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

• Do not overreach. Always keep proper footing and balance.

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

both the front and rear handle or grips.

• Keep hands, face, and feet at a distance from all moving parts. Do not touch or try to stop the cutting head when it is rotating.

• Do not touch the engine or muffler. These parts get extremely hot from operation. They remain hot for a short time after turning off the unit.

• 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.

• This unit has an overspeed protection switch to keep the unit from overheating. When the unit is run at full throttle while not in use for

extended lengths of time the overspeed protection switch will engage.

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

,, SAFETY & INTERNATIONAL SYMBOLS ,,

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.

SYMBOL MEANINGSYMBOL

• If the unit is struck or becomes 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.

• Stop and switch the engine to off for maintenance, repair, or for changing the cutting head or other attachments.

• Use only replacement parts and accessories listed in the Parts List section of this operator's manual and distributed by a Craftsman outlet or service

center. Use of any replacement parts or accessories purchased elsewhere may be hazardous and will also void the warranty.

,, Keep unit clean of vegetation and other materials. They may become

lodged between the cutting head and shield.

• To reduce fire hazard, 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 or spark.

, Allow the engine to cool before storing or transporting. Be sure to secure

the unit while transporting.

, Store the unit in a dry area, locked up or up high to prevent unauthorized

use or damage, 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 the Cleaning and Storage instructions.

, Keep these instructions. Refer to them often and use them to instruct other

users. If loaning someone this unit, also loan them these instructions.

SAVE THESE INSTRUCTIONS

iiiiiii_iiiiii_

KEEP

W_IF

Bets

HOT_

In_eJ

o_[ii

NNIN

SHAF

CRAFTSMAN 2 YEAR FULL WARRANTY

FOR 2 YEARS from the date of purchase, this product is warranted against any defects in material or workmanship. Defective product will receive free repair or free replacement if repair is unavailable.

For warranty coverage details to obtain repair or replacement, visit the web site: www.craftsman.com This warranty covers ONLY defects in material and workmanship. Warranty coverage does NOT include:

• Expendable items that can wear out from normal use within the warranty period, such as cutting line, filters or spark plugs. Product damage resulting from user attempts at product modification or repair or caused by product accessories.

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 is void if this product is ever used while providing commercial services or if rented to another person. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state.

Sears Brands Management Corporation, Hoffman Estates, IL 60179

APPLICATIONS Mumer As a trimmer: \

• Cutting grass and light weeds Edging Decorative trimming around trees, fences, etc. Shaft Grip

Other optional accessories may be used with this unit.

Shaft Housing

Line Cutting Blade

D-Handle

Cutting Head Shield

On/Oft

Control

Convertible TM

Coupler

Throttle

Control

Spark Plug

Starter Rope

Grip

Air Filter

Cover

Fuel Cap

Primer Bulb

Cutting

INSTALL CUTTING HEAD SHIELD

-- i_L_ ARNING: To prevent serious personal injury, never operate

Use the following instructions ifthe cutting head shield on the unit is not installed.

1. Place the cutting head shield

2. Take the 2 shield screws and

3. Using an appropriate screw

the trimmer without the cutting head shield in place.

onto the guard mount bracket, making sure to align

the holes on the shield with the ones in the guard mount

bracket. (Fig. 1) screw each one into the

shield until finger tight.

driver, tighten the screws until the shield is firmly in place.

Cutting _ _ Guard

HeadShie,d\ \ BrackeMeUntt

• Screw (2)

Fig. I

INSTALL AND ADJUST THE D-HANDLE

1. Push the D-handle down onto Shaft Grip Shaft Housing

hex bolt hole in the handle D-Handle should be on the left side.

the shaft housing (Fig. 2). The ___._

2. Insert the bolt into the hex hole in the handle and push _ "kJ__'_._ Tighten

through. Place the washer on Minimum 6 in. _-"_-'_r-_ Wing

the bolt, then screw the wing nut onto the bolt. Do not (15.24 cm) J_-"_l_ Nut

tighten until making the handle adjustment. Bolt -_ Washer

3. Rotate the D-handle to place Fig. 2 the grip above the top of the

shaft housing. Place it a minimum of 6 inches (15.24 cm) from the end of the shaft grip.

4. While holding the unit in the operating position (Fig. 10), move the D-handle to the location that provides the best grip.

5. Tighten the wing nut until the D-handle is secure.

OPERATING THE CONVERTIBLE TM COUPLER SYSTEM

the manual that came with the attachment. Follow all safety |

WARNING: Before using any attachment, read and understand I

information contained within.

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

• Edger Cultivator

Turbo Blower

Brushcutter Pole Saw

Hedge Trimmer

INSTALLING THE TRIMMER ATTACHMENT OR OTHER ATTACHMENT

I _, I WARNING" To avoid serious personal injury and damage to the I

_unit, shut the unit off before removing or installing attachment.

_ OAUTION : Before operating the u nit, be su re that the release 1

NOTE: To make installing or Primary Hole

1. Turn knob counterclockwise _,, .lj____ _

2. While firmly holding the

NOTE: Aligning the release

3. Turn the knob clockwise to

For decorative edging with the line head trimmer attachment or other

attachment, lock the release button of the attachment into the

90° hole (Fig. 4). REMOVING THE TRIMMER ATTACHMENT OR OTHER ATTACHMENT

1. Turn the knob counterclockwise to loosen (Fig. 4).

2. Press and hold the release

button is fully snapped into the primary hole, and that the knob is securely tightened.

removing the attachment

the ground or on a work

easier, place the unit on _ _, _---_¢--"_" bench.

to loosen (Fig. 4).

attachment, push it straight Upper Shaft Lower Shaft into the Convertible TM

coupler until the release button snaps firmly into the

primary hole (Fig. 3).

button with the guide recess will help

installation (Fig. 5).

tighten (Fig. 4).

button (Fig. 5). While firmly holding the upper __

shaft housing, pull the attachment straight out of the

Convertible TM coupler (Fig. 3).

Housing

90° Edging Hole

(Trimmer Only)

Convertible TM Release Button

Coupler

Housing

Fig. 3

Fig. 4

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

m i_[_ ARN|NG: It has been proven that fuel containing greater than

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 30 days old).

Using Blended Fuels If choosing to use a blended fuel, or its use is unavoidable, follow

recommended precautions:

• Always agitate the fuel mix before fueling the unit

• Drain the tank and run the engine dry before storing the unit Using Fuel Additives

_ CAUTION: For proper engine operation and maximum

The bottle of 2-cycle oil that came with the unit contains a fuel additive that will help inhibit corrosion and minimize the formation of gum deposits.

Always use a good 2-cycle oil designed 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 inthe engine fuel tank.

See the table below for specific gas and oil mixing ratios.

NOTE: One gallon (3.8 liters) of

NOTE: Dispose of the old fuel/oil

_ WARN|NG: Gasoline is extremely flammable. Ignited vapors

FUELING THE UNIT

15% ethanol will likely damage this engine and void the warranty.

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

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.

unleaded gasoline mixed with one 3.2 oz. (95 ml)

bottle of 2-cycle oil makes a 40:1 fuel/oil ratio.

mix in accordance to

Federal, State and Local

regulations.

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.

UNLEADED GAS 2 CYCLE OIL

f GALLON US 3.2 FL. OZ.

(3.8 LITERS) (95 ml)

f LITER 25 ml

MiXiNG RATIO =40:1

Fig. 5

Guide Recess

_ WARN|NG: Remove fuel cap slowly to avoid injury from fuel

_ WARNING: Add fuel in a clean, well ventilated outdoor area. Wipe

1. Turn unit on its side, with the fuel cap facing up, and remove the fuel cap.

2. Place the gas container's spout into the fill hole on the fuel tank and fill

NOTE: Do not overfill the tank.

3. Wipe up any gasoline that may have spilled.

4. Reinstall the fuel cap.

5. Move the unit at least 30 ft. (9.1 m) from the fueling source and site

spray. Never operate the unit without the fuel cap securely in place.

up any spilled fuel immediately. Avoid creating a source of ignition for spilt fuel. Do not start the engine until fuel vapors dissipate.

the tank.

before starting the engine.

A I WARNING: Operate this unit only ina well-ventilated outdoor area.

_ Carbon monox de exhaust fumes can be etha n a conf ned area.

_ WARNING: Avoid accidental starting. Make sure to be in the

STARTING iNSTRUCTiONS

1. Mix gas with oil. See Oil and

2. Fill the fuel tank with the

NOTE: There is no need to turn

3. Fully press and release the

4. Flip the choke lever clockwise

5. Crouch in the starting position

6. Waitand allow the unit to idlefor

7. Squeeze and hold the throttle

NOTE: The unit uses the

IF'... The engine does not start,

NOTE: If the unit is hot and fails

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool down by idling.

2. Press and hold the On/Off Control in the OFF (O) position until the

HOW TO START THE UNIT USING THE PLUG=IN POWER START OR

POWER BIT START ACCESSORY NOTE= This unit can use a Plug-in Power Start or Power Bit Start

starting position when pulling the starter rope (Fig. 9). To avoid serious

Fuel Mixing Instructions.

fuel/oil mixture.

the unit on. The On/Off

Control is in the ON ( I) position at all times (Fig. 6).

primer bulb 10 times, slowly. Some amount of fuel should

be visible in the primer bulb and fuel lines (Fig. 7). If fuel

can not be seen in the bulb, press and release the bulb as

many times as it takes until fuel can be seen in it.

until it clicks (Fig. 8).

(Fig. 9). Do not squeeze the throttle. Pull the starter rope

with a controlled motion until the unit starts.

5 - 10 seconds. Ifthe unit stops running during this time, squeeze Choke LeverJ

the throttle control and pullthe starter rope in a controlled

motion until the unit starts.

control for 30 to 60 seconds to allow the unit to warm up.

INCREDI=PULL TM starting

system, which significantly reduces the effort required

to start the engine. The

starter rope must be pulled out far enough to

hear the engine attempt to start. There is no need to / oq,,,p_o,,m\

pull the rope briskly-- there I/_/_/-PUI/J/,,_ _

is no harsh resistance .....................

when pulling. Be aware _,_c_oa!-p,,. that this starting method is

vastly different from (and

much easier than) what

you may be used to.

go back to step 3.

to start within 3 pulls of the starter rope, squeeze the throttle control and pull the starter rope

until the unit starts.

engine comes to a complete stop (Fig. 6).

optional accessory! Please refer to the Plug-In Power Start or Power Bit Start operator's

manual for proper use of this feature. (Items Sold Separately! Please refer to page 9 of this manual about purchasing these accessories.)

Fig. 6

Fig. 7

Fig. 8

Fig. 9

Control

Primer

/Bumb

Starting

Position

STARTING 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 Control is in the

ON (I) position at all times (Fig. 6).

3. Fully press and release the primer bulb 10 times, slowly. Some amount of

Jinjury,the operator and unit must be in a stable position while starting.

fuel should be visible in the primer bulb and fuel lines (Fig. 7). If fuel can not be seen in the bulb, press and release the bulb as many times as it takes

until fuel can be seen in it.

4. Flip the choke lever clockwise until it clicks (Fig. 8).

5. Crouch in the starting position (Fig. 9). Do not squeeze the throttle. Place the Plug-In Power Start or Power Bit Start into the back of the unit.

Refer to the Operation section of the Plug-In Power Start or Power Bit

Start operator's manual.

6. Press and hold the ON (I) button of the Plug-in Power Start or Power Bit Start equipped drill in intervals no longer than 4 seconds each until the

unit starts.

7. Wait and allow the unit to idle for 5 - 10 seconds. If the unit stops running during this time, squeeze the throttle control, then press and hold the ON (I)

button of the Plug-in Power Start or Power Bit Start equipped drill in intervals no longer than 4 seconds each until the unit starts.

8. Remove the Plug-In Power Start or drill from the unit.

9. Squeeze and hold the throttle control for 30 to 60 seconds to allow the unit to warm up.

IF'... The engine does not start, go back to step 3. IF'... The engine fails to start after a few attempts, squeeze the throttle

control, then press and hold the Plug-In Power Start or drill ON (I) button in intervals no longer than 4 seconds each until the unit starts.

STOPPING INSTRUCTIONS

1. Release the throttle control and allow the engine to cool down by idling.

2. Press and hold the On/Off Control in the OFF (O) position until the engine comes to a complete stop (Fig. 6).

HOLDING THE UNIT

-- ]_ ARNING: Always wear eye, hearing, foot and body protection

Before operating the unit, stand in the operating position (Fig. 10). Check for the following:

• The operator iswearing eye

• The unit is at waist level

• The cutting head is parallel to

ADJUSTING TRIMMING LINE LENGTH

i iw,o,,,o; I

The Bump Head TM cutting head allows the release of trimming line

without stopping the engine. To release more line, lightly tap the

cutting head on the ground (Fig.

11) while operating the unit at high

speed. NOTE: Always keep the

Each time the head is bumped, about 1 inch (25.4 mm) of trimming line releases. A blade in the cutting head shield will cut the line to the proper

length if any excess line is released.

to reduce the risk of injury when operating this unit.

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

straight, the left hand holding ,_ the D-handle

Fig. 10

the ground and easily contacts the grass without the need to bend over

assembly. Excessive line length will cause premature engine failure and / or unit damage.

trimming line fully extended. Line release

becomes more difficult when the cutting line gets shorter.

Fig. 11

Forbestresults,tapthebumpknobonbaregroundorhardsoil.If attemptingalinereleaseintallgrass,theenginemaystall.

NOTE:DonotresttheBumpHeadTM on the ground while the unit is running.

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

TIPS FOR BEST TRIMMING RESULTS

Keep the cutting head parallel to the ground. Do not force the cutting head. Allow the tip of the line to do the cutting,

especially along walls. Cutting with more than the tip will reduce cutting efficiency and may overload the engine.

Cut grass over 8 inches (200 mm) by working from top to bottom in small increments to avoid premature line wear or engine drag.

• Cut from right to left whenever possible. Cutting to the left improves the

unit's cutting efficiency. Clippings are thrown away from the operator.

• Slowly move the unit into and out of the cutting area at the desired height.

Move either in a forward-backward or side-to-side motion. Cutting shorter lengths produces the best results.

Trim only when grass and weeds are dry.

• The life of the cutting line is dependent upon:

Following the trimming techniques What vegetation is being cut Where vegetation is cut

For example, the line will wear faster when trimming against a

foundation wall as opposed to trimming around a tree.

DECORATIVE TRiMMiNG Decorative trimming is

accomplished by removing all vegetation around trees, posts,

fences, etc. Rotate the whole unit so that the cutting head is at a 30 ° angle to

the ground (Fig. 12).

MAINTENANCE SCHEDULE

maintenance or repairs with unit running. Always service and repair a cool unit. Disconnect the spark plug wire to ensure that

WARNING: To prevent serious injury, never perform

the unit cannot start.

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

NOTE: Maintenance, replacement, or repair of the emission control devices

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. 8

Every 25 hours Check spark plug condition and gap p. 8

LINE INSTALLATION

-- i

This section covers both SplitLine® and standard single line installation. Always use original equipment manufacturer 0.095 in. (2.41 ram}

replacement line. Line other than the specified may make the engine overheat or fail.

unsure about these procedures take the unit to Craftsman or other qualified service dealer. Call 1-800-4-MY-HOME ®for more information.

and system may be performed by a Craftsman or other qualified service dealer. Call 1=800=4=MY=HOME ®for more information.

rope. These can break off and become dangerous projectiles.

WARNING: Never use metal-reinforced line, wire, chain or

Fig. 12

There are two methods to replace Bump Knob the trimming line:

• Wind the inner reel with new line Install a prewound inner reel

Removing the Existing inner Reel

1. Hold the outer spool with one

hand and unscrew the bump knob counterclockwise (Fig.

13). Inspect the bolt inside the bump knob to make sure it

moves freely. Replace the bump knob if damaged. Fig.13

2. Remove the inner reel from the outer spool (Fig. 14). Outer

3. Remove spring from the Spool

inner reel (Fig. 14).

4. Use a clean cloth to clean _ ,. the inner reel, spring, shaft, and inner surface of the outer_

spool.

Check the indexing teeth on

the inner reel and outer spool for wear (Fig. 15). If

necessary, remove burrs or replace the reel and spool.

NOTE: Always use the correct

Single Line installation

Go To Step 8 for SplitLine® Installation:

6. Take approximately 20 feet (6

7. Wind the lines in tight even

SplitUne® installation

8. Take approximately 10 feet (3

9. Insert the end of the line into

10. Before winding, split the line

11. Wind the line in tight even

NOTE: Failure to wind the line in

line length when installing trimming line

on the unit. The line may not release properly if

the line is too long.

m) of new trimming line, loop it into two equal lengths. Insert each end of the line

through one of the two holes

in the inner reel (Fig. 16). Pull

the line through the inner reel so that the loop is as small

as possible.

layers onto the reel (Fig. 17).

Wind the line in the direction

indicated on the inner reel. Place an index finger

between the two lines to stop

the lines from overlapping.

Do not overlap the ends of

the line. Proceed to step 12.

m) of new trimming line. Insert

one end of the line through one of the two holes in the

inner reel (Fig. 18). Pull the line through the inner reel until

only about 4 inches is left out.

the open hole in the inner

reel and pull the line tight to make the loop as small as

possible (Fig. 18).

back about 6 inches. , _

layers in the direction ._ indicated on the inner reel. /H/i/

the direction indicated will cause the cutting head to

operate incorrectly.

indexing Teeth

Fig. 14

Fig.15

Fig. 16

Fig. 17

Fig. 18

Spring

Inner Reel

Loop

12. Insert the split ends of the line into the two holding slots

(Fig. 19).

13. Insert or slide the split ends of the line through or into the

eyelets in the outer spool place inner reel with spring

inside the outer spool (Fig.

20). Push the inner reel and outer spool together.

NOTE: The spring must be

14. While holding the inner reel

15. Hold the inner reel in place

INSTALLING A PREWOUND REEL

1. Hold the outer spool with one

2. Remove the old inner reel from the outer spool (Fig. 14).

3. Remove the spring from the old inner reel (Fig. 14).

4. Place the spring in the new inner reel.

NOTE: The spring must be assembled on the inner reel before

5. Insert or slide the ends of the line through or into the eyelets in the outer

6. Place the new inner reel inside the outer spool. Push the inner reel and

7. Hold the inner reel in place and install the bump knob by turning

assembled on the inner reel before reassembling

the cutting head.

and outer spool, grasp the split ends and pull firmly to

release the line from the holding slots in the spool.

and install the bump knob by turning clockwise. Tighten

securely.

hand and unscrew the bump Fig. 20 knob counterclockwise (Fig. 13). Inspect the bolt inside the bump knob to

make sure it moves freely. Replace the bump knob if damaged.

reassembling the cutting head.

spool (Fig. 20).

outer spool together. While holding the inner reel and outer spool, grasp the ends and pull firmly to release the line from the holding slots in the spool.

clockwise. Tighten securely.

Eyelets

Fig. 19

Index Teeth

AiR FILTER MAINTENANCE Cleaning the Air Filter _,

Clean the air filter every 10 hours of operation. It is an important item to maintain. Failure to maintain the

air filter properly can result in poor performance or can cause permanent damage to the engine.

1. Open the air filter cover by pressing the lock tab in and

pulling out on the air filter Lock Tab Air Filter cover (Fig. 21). Fig. 21

2. Remove the air filter (Fig. 21).

3. Wash the filter in detergent and f . water (Fig. 22). Rinse the filter

thoroughly and allow it to dry.

4. Apply enough clean SAE 30 motor oil to lightly coat the

filter (Fig. 23).

5. Squeeze the filter to spread and remove excess oil (Fig. 24).

6. Replace the air filter into the air filter cover (Fig. 21).

NOTE: Operating the unit

without the air filter Fig. 22 WILL VOID the warranty.

7. Close the air filter cover by J.._, swinging it to the left and

then pressing it down until the lock tab snaps into place

(Fig. 21).

CARBURETOR ADJUSTMENT NOTE: Careless adjustments can

REPLACING THE SPARK PLUG

Use a Champion RDJ7J or a

replacement part #753-06193 spark plug (or equivalent). Remove the plug after every 25 hours of

operation and check its condition.

1. Stop the engine and allow it

2. Clean around the spark plug. Fig. 24

seriously damage the unit. Contact a Craftsman

or other qualified service dealer to make carburetor

adjustments. Fig. 23 Call 1-800=4=MY-HOME ®

for more information.

to cool. Grasp the plug boot firmly and pull it from the

spark plug.

Remove the spark plug from

the cylinder head by turning a 5/8-inch socket counterclockwise.

Air Filter Cover

_ ARNING: Do not sand blast, scrape or clean spark plug

electrodes. Grit in the engine could damage the cylinder.

Replace a cracked, fouled or dirty spark plug. Set the air gap at 0.025

in. (0.635 rnrn) using a feeler gauge (Fig. 25).

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.olb. (12.3=13.5 Nora). Do not over=tighten.

Reattach the plug boot.

0.025 in.

(0.635 ram)

Fig. 25

TRANSPORTING

• Allow the engine to cool before transporting.

• Drain fuel from unit. Tighten fuel cap before transporting.

Secure the unit while transporting.

CLEANING

WARNING: To avoid serious personal injury, always turn the unit off I

and allow itto cool before cleaning or maintaining it. j

Use a small brush to clean offthe 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 anopen 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. 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 30 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.

PLUG-IN POWER START AND POWER BiT START FEATURES

This unit can be started with an optional Plug-In Power Start or Power Bit Start (items sold separately). If choosing to start the unit using one of these

features or have questions, please contact your local Craftsman retailer or call 1-800-4-MY-HOME® for more information and purchasing. You may

also go to www.craftsrnan.corn.

Power Start Feature

item No. Description

316.85951 ..................................... Plug-In Power Start

316.85952 ........................................ Power Bit Start

PROBLEM SOLUTION

Empty fuel tank

Engine is flooded

Fouled spark plug

Air filter is plugged

Improper carburetor adjustment

Old or improperly mixed fuel

Dirty air filter

Old or improperly mixed fuel

Fouled spark plug

Engine overspeed protection engaged

Fill fuel tank with properly mixed fuel

Pull the starter rope while holding the throttle control

Replace the spark plug

Replace or clean the air filter

Take to a Craftsman or other qualified service dealer for adjustment

Drain fuel tank and add fresh fuel mixture

Clean or replace the air filter

Drain fuel tank and add fresh fuel mixture

Replace the spark plug

Allow the engine to cool down for 10 minutes before restarting

Cutting head bound with grass

Inner reel bound up

Line welded

Not enough line is exposed Push the bump knob and pull out line until 4 inches (102 mm) of line is

Oil, cleaner or lubricant in cutting head Clean and thoroughly dry the cutting head

Stop the engine and clean cutting head

Rewind the inner reel

Disassemble, remove the welded section and rewind

outside of the cutting head

+ 22 hidden pages