Craftsman 316792021 Owner’s Manual

Operator's Manual

4-Cycle GAS TRIMMER

Model No. 316.792021

INCREDI.PULL TM

UNBELIEVABLE STARTING EA S E

with MAX FIRE_._/II3NITIO NTM

* SAFETY * ASSEMBLY * OPERATION * MAINTENANCE * PARTS LIST * ESPANOL, R 15

CAUTION: Before using this product, read this manual and

follow all safety rules and

operating instructions.

FOR ANSWERS TO QUESTIONS ABOUT THIS PRODUCT, CALL 1-800-4-MY=HOME®

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

Visit our websRe: www.craltsman.com

P/N 769-05876 PO2 4/10

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.

The purpose of safety symbols is to attract attention to possible dangers. The safety symbols, and their explanations, deserve 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.

SYMBOL MEANING

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 ......................................... 7

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

Cleaning and Storage ......................................... 11

Optional Equipment .......................................... 11

Troubleshooting Chart ........................................ 12

Specifications ............................................... 13

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 #753-06334 Muffler Assembly.

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.

• 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 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 forfuel 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.

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 Craftsman Hassle-Free TM XTRA QUIET Spiral Lineoriginal

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.

SAFETY WARNINGS FOR GAS UNITS

explode if ignited. Take the following precautions:

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

,, Avoid creating a source of ignition for spilled fuel. Do not start the engine

until fuel vapors dissipate.

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 of information or instructions vital to the operation or

_ ANGER: 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®

WHILE OPERATING

1_L_ WARNING: Gasoline is highly flammable and its vapors can

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.

yourself and others. Always follow the safety precautions to reduce the risk

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

of fire, electric shock and personal injury.

CAUTION: Failure to obey a safety warning may result inproperty 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.

Optional Accessory! Please refer to the Plug-In Power Start or Power Bit Start operator's

manual for proper use of these features. (Items may be Sold Separately! Please refer to page 11 of this manual for more information

about purchasing these accessories.)

Always stop the engine and allow it to cool before filling the fuel tank. Never

remove the cap of the fuel tank, 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 inthe tank.

Add fuel in aclean, well-ventilated outdoor area where there are no sparks or flames. Slowly remove the fuel cap only after stopping engine. Do not smoke

while fueling. Wipe up any spilled fuel from the unit immediately. Always wipe unit dry before using.

Move the unit at least 30 feet (9.1 m) from the fueling source and site before

starting the engine. Do not smoke or allow sparks and open flames near the area while adding fuel or operating the unit.

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.

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

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 isdusty. 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 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, have the unit adjusted by an authorized service technician.

Adjust the D-handle that will 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.

• Avoidaccidentalstarting.Beinthestartingpositionwheneverpullingthe starterrope.Theoperatorandunitmustbeinastablepositionwhile

starting.SeeStarting/StoppingInstructions. Usetherighttool.Onlyusethistoolforthepurposeintended.

Donotoverreach.Alwayskeepproperfootingandbalance. Alwaysholdtheunitwithbothhandswhenoperating.Keepafirmgripon

boththefrontandrearhandleorgrips. Keephands,face,andfeetatadistancefromallmovingparts.Donottouch

ortrytostopthecuttingattachmentwhenitisrotating. Donottouchtheengineormuffler.Thesepartsgetextremelyhotfrom

operation.Theyremainhotforashorttimeafterturningofftheunit. Donotoperatetheenginefasterthanthespeedneededtocut,trimoredge.Do

notruntheengineathighspeedwhentheunitisnotinuse. Alwaysstoptheenginewhencuttingisdelayedorwhenwalkingfromone

cuttinglocationtoanother. Ifstrikingorunitbecomesentangledwithaforeignobject,stoptheengine

immediatelyandcheckfordamage.Donotoperatebeforerepairingdamage.Do notoperatetheunitwithlooseordamagedparts.

Stopandswitchtheenginetooffformaintenance,repair,orforchanging thecuttingattachmentorotherattachments.

Useonlyoriginalequipmentmanufacturerreplacementpartsand

accessoriesforthisunit,aslistedinthePartspagesofthisoperator's

manual.TheseareavailablefromaSearsorotherauthorizedservice dealer.Useofanyunauthorizedpartsoraccessoriescouldleadtoserious

injurytotheuser,ordamagetotheunit,andvoidthewarranty.

Keepunitcleanofvegetationandothermaterials.Theymaybecome

lodgedbetweenthecuttingattachmentandshield. Toreducefirehazard,replacefaultymufflerandsparkarrestor.Keepthe

engineandmufflerfreefromgrass,leavesorotherdebris.

OTHERSAFETYWARNINGS

Neverstoretheunit,withfuelinthetank,insideabuildingwherefumes

mayreachanopenflameorspark. Allowtheenginetocoolbeforestoringortransporting.Besuretosecure

theunitwhiletransporting. Storetheunitinadryarea,lockeduporuphightopreventunauthorized

useordamage.Keepoutofthereachofchildren.

Neverdouseorsquirttheunitwithwateroranyotherliquid.Keephandles

dry,cleanandfreefromdebris.Cleanaftereachuse.SeetheCleaning andStorageinstructions.

Keeptheseinstructions.Refertothemoftenandusethemtoinstructotherusers.If

loaningsomeonethisunit,alsoloanthemtheseinstructions.

SAVETHESEINSTRUCTIONS

=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 MEANING

_,. SAFETY ALERT SYMBOL

_] I []_ WARNING: Read the operator's manual(s) and follow all

IL.__L_._J_ warnings and safety instructions. Failure to do so can result

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

, READ OPERATOR'S MANUAL

, in serious injury to the operator and/or bystanders.

SYMBOL MEANING

_ @ , THROWN OBJECTS AND ROTATING CUTTER CAN

/_ CAUSE SEVERE INJURY

_>_" WARNING: Small objects can be propelled at high speed,

;*/__/_=b . causing injury. Keep away from the rotating rotor.

A mKEEP BYSTANDERS AWAY

WARNING: Keepall bystandeisl especially Children and

pets, at least 50 feet (!5 m.) from the operating area.

4t _ DWEAR EYE AND HEARING PROTECTION _! ye injury and hearing loss.Weareyeprotection meetingANSI Z87.1-

WARNING: Thrown objects and loud noise can cause severe

1989standards andear protection when operating this unit. Use a full face shieldwhen needed.

, UNLEADED FUEL

Always use clean, fresh unleaded fuel

, ON/OFF STOP CONTROL

ON / START / RUN

, DO NOT USE E85 FUEL IN THIS UNIT

WARNING: It has been proven that fuel containing

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

.HOTSURFAOE

_,,_ ARNING: D0 nottoucha hot enginel TheSe partS get

i,===== When turned off they remain hot for a short time,

_J Refer to opeiat0r!s manual f0i the pr0per type 0f0iL

extremely hot from operation and may cause severe burns.

,OiL

PRIMERBULBPush pdmei bulb: iU!!y and SloW!y: iO timesl

_ , SHARP BLADE

WARNING: sharpblade Ontiimmer attachment shield.

"_ p[event sedous !nJu_,do not touch th e f!ne cutting blade,

CRAFTSMAN PROFESSIONAL FULL WARRANTY

If this Craftsman Professional product fails due to a defect in material or workmanship within three 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 one year 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

APPLICATIONS on/off Control As a trimmer:

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

Shaft Grip

Throttle Lockout

Fuel Cap

D-Handle _ Throttlecontrol Primer Bulb

Shoulder

Shaft Housing

Strap Loop

Rapid Rewind ® Cutting

Head

iNSTALL AND ADJUST THE D-HANDLE

1. Place D-handle over the shaft housing and onto the

bottom clamp (Fig. 1). Place it a minimum of 6 inches

(15.24 cm) from the end of the shaft grip.

2. Start screws with a large Flat-head or T-25 Torx

screwdriver. Do not tighten until making the necessary

handle adjustment.

3. While holding the unit in the operating position (Fig. 13),

move the D-handle to the location that provides the best grip.

Choke Lever

Air Filter Muffler

Cover

Optional Hassle Free ® PLUS Adapter

Cutting Head Grip

Shield

Line Cutting

Blade

Cutting Head Starter Rope

4. Tighten the clamp screws evenly, until the D-handle is secure. INSTALL THE SHOULDER SUPPORT

Shaft Grip

1. Put the shoulder support on using the clip. (Fig. 2).

2. Adjust by lifting slightly on the rear of the lower clip then

push or pull the loose end of the strap length to fit the

D-Handle

operator's size and comfort. (Fig. 3).

3. Attach the shoulder clip to

Clamp

Fig. I

the unit. (Fig. 4)

Electric Start

Fig. 2

iNSTALL THE CUTTING HEAD

SHIELD

1. Place the cutting head shield onto the guard mount

bracket, making sure to align the holes on the shield with

the ones in the guard mount bracket. (Fig. 5)

2. Take the 4 shield screws and screw each one into the

shield until finger tight.

3. Using a Flat Head or T-20 screw driver, tighten the

screws until the shield is firmly in place. (Fig. 5)

Support

Clip

Adjustment

Tab

Fig. 3

Support

Fitting

Fig. 4

\ \ Screws (4)

Shield \ \ GuardMount

Fig. 5

3. Remove the oil fill plug from the crankcase (Fig.8).

4. Pour the entire bottle of oil into the oil fill hole (Fig. 7).

NOTE: Never add oil to the fuel

or fuel tank.

5. Wipe up any oil that may have spilled and reinstall the

oil fill plug.

Check oil before each use and

change as needed. Refer to

Checking the Oil Level. RECOMMENDED FUEL TYPE

Old fuel is the primary reason for improper unit performance. Be sure to use fresh, clean, unleaded gasoline.

NOTE: Dispose of the old gasoline in accordance to Federal, State and

Local regulations.

NOTE: This is a four cycle engine. In order to avoid damage to the unit, do

not mix oil with gasoline.

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 or form acids when stored.

Use fresh fuel (less than 30 days old), when using alcohol-blended fuel. Using Blended Fuels

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

• Always use fresh unleaded gasoline

• Use the fuel additive STA-BIL® or an equivalent

• Drain tank and run the engine dry before storing unit

Using Fuel Additives

Oil Fill Plug

O-Ring --_'

Fig. 8

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.

SERIOUS PERSONAL INJURY. Check and maintain the proper oil level in the crankcase; it is important and cannot be

I_ _WARNING: OVERFILLING OIL CRANKCASE MAY CAUSE

RECOMMENDED OIL TYPE Using the proper type and weight of oil in the crankcase is extremely important.

Check the oil before each use and change the oil regularly. Failure to use the correct oil, or using dirty oil, can cause premature engine wear and failure.

Use a high-quality SAE 30 weight oil of API (American Petroleum Institute) service class SF,SG, SH.

ADDING OiL TO CRANKCASE: INITIAL USE NOTE: This unit is shipped

The unit is supplied with one 2.2 fl.oz. (60 ml.) bottle of SAE 30 SF,

SG, SH oil (Fig. 6). NOTE: Save the bottle of oil. It

1. Unscrew the top of the

2. Place unit on a flat, level

overemphasized. Check the oil before each use and change it as needed. See Changing the Oil.

without oil. In order to avoid damage to the

unit, put oil in the crankcase before

attempting to start the unit.

can be used to measure the correct amount

during future oil changes. See Changing

the Oil.

bottle of oil and remove the paper seal covering the

opening. Replace the top. Next, cut the tip off the

funnel spout (Fig. 6).

surface.

Oil Fill Hole

Fig.6

Fig.7

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.

The use of fuel additives, such as STA-BIL@Gas Stabilizer or an equivalent, will

inhibit corrosion and minimize the formation of gum deposits. Using afuel additive

can keep fuel from forming harmful deposits in the carburetor for up to six (6)

months. Add 0.8 oz. (23 ml.) of fuel additive per gallon of fuel according to the instructions on the fuel additive container. NEVER add fuel additives directly to the

unit's gas tank. FUELING THE UNIT

-- i

_L_ WARNING: Remove fuel cap slowly to avoid injury from fuel

_ ARNING: DO NOT USE E85 FUEL IN THIS UNIT. It has beenl

1. Remove the fuel cap (Fig. 9).

2. Place the gas container's

NOTE: Do not overfill the tank.

3. Wipe up any gasoline that

4. Reinstall the fuel cap.

5. Move the unit at least 30 ft.

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

proven that fuel containing greater than 15% ethanol will likely damage this engine and void the warranty.

Gas Can Spout

spout into the fill hole on the fuel tank (Fig. 9) and fill the

tank.

may have spilled.

(9.1 m) from the fueling

source and site before starting the engine.

Fuel Tank

Fig. 9

_L_ WARNING: Operate this unit only in a well-ventilated outdoor area.I

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

NOTE: This unit uses the Incredi-PuIF Mstarting system, which

STARTING INSTRUCTIONS

1. Check the oil level in the

2. Fill the fuel tank with fresh,

NOTE: There is no need to turn /t I_ ,_J/"_

3. Fully press and release the

4. Place the choke lever in

5. Crouch in the starting

6. Place the choke lever in

7. While pressing the throttle

8. Keep the throttle squeezed

9. Continue squeezing the

NOTE: Unit is properly warmed up when engine accelerates without

IF... the engine hesitates, return the choke lever to Position 2 (Fig. 11)

IF... the engine does not start, go back to step 3. IF... the engine fails to start after a few attempts, place the choke lever

IF WARM... If the engine is already warm, start the unit with the choke lever

STOPPING INSTRUCTIONS

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

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

Carbon monoxide exhaust fumes can be lethal in a confined area. j

starting position when pulling the starter rope (Fig. 12). To avoid serious injury, the operator and unit must be in a stable position

while starting.

significantly reduces the effort required to start the engine. There is no harsh resistance when pulling the starter rope. Be aware that

this starting method is vastly different from (and much easier than)

previous starting techniques.

Stop/Off (O)

crankcase. Refer to ........ /)_-_

Checking the Oil Level. bllar'6'un i i , ___

clean unleaded gasoline. __ \\ _- Refer to Fueling the Unit. _[_ _-_._./

the unit on. The On/Off /1_ _{_.

Control is in the ON ( I) "_ _ Throttle Control position at all times

(Fig. 10).

primer bulb 10 times, slowly. Primer Bulb Some amount of fuel should Choke Lever

be visible in the primer bulb and fuel lines (Fig. 11). If fuel

cannot be seen in the primer bulb, press and release the bulb until fuel is visible.

Position 1 (Fig. 11).

position (Fig. 12). Press the throttle lockout in and fully squeeze the throttle control Fig. 11

lever. Pull the starter rope 5 Starting times. Position

Position 2 (Fig. 11).

lockout in and squeezing the throttle control, pull the

starter rope 3 to 5 times to start the engine.

and allow the engine to warm up for 30 to 60 seconds. Fig. 12

throttle control, move the choke lever to Position 3 (Fig. 11) and continue warming the engine for an additional 60 seconds. The unit

may be used during this time.

hesitation.

and continue warm-up.

in Position 3 and squeeze the throttle control. Pull the starter rope

out with a controlled and steady motion 3 to 8 times. The engine should start. If not, repeat.

in Position 2. After the unit starts, move the choke lever to

Position 3.

comes to a complete stop (Fig. 10).

Fig. I0

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

STARTING INSTRUCTIONS

1. Check the oil level in the crankcase. Refer to Checking the Oil Level.

2. Fill the fuel tank with fresh, clean unleaded gasoline. Refer to Fueling

NOTE: There is no need to turn the unit on. The On/Off Control is in the ON ( I)

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

4. Place the choke lever in Position 1 (Fig. 11).

5. Crouch in the starting position (Fig. 12).Place the electric starter or

6. Press the throttle lockout in and fully squeeze the throttle control lever.

7. Place the choke lever in Position 2 (Fig. 11).

8. While pressing the throttle lockout in and squeezing the throttle control,

9. Continue to squeeze the throttle control, remove the electric starter or

10. Continue squeezing the throttle control, move the choke lever to

NOTE: Unit is properly warmed up when engine accelerates without

IF... the engine hesitates, return the choke lever to Position 2 (Fig. 11)

IF... the engine does not start, go back to step 3. IF... the engine fails to start after a few attempts, place the choke lever

IF WARM... If the engine is already warm, start the unit with the choke lever

STOPPING INSTRUCTIONS

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

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

Optional Accessory!

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

manual for proper use of these features. (Items may be Sold Separately! Please refer to page 11 of this manual for more information

about purchasing these accessories.)

the Unit.

position at all times (Fig. 10).

of fuel should be visible in the primer bulb and fuel lines (Fig. 11). If fuel cannot be seen in the primer bulb, press and release the bulb until fuel

is visible.

power start bit into the back of the unit. Refer to the Operation section

of the Electric Starter or Power Start Bit TM operator's manual.

Press and hold the electric starter or drill ON (I) button for 2 seconds.

press and hold the electric starter or drill ON (I) button for 2 second intervals until unit starts.

drill from the unit and allow the engine to warm up for 30 to 60 seconds.

Position 3 (Fig. 11) and run the unit for an additional 60 seconds. The unit may be used during this time.

hesitation.

and continue warm-up.

in Position 3 and squeeze the throttle control. Press and hold the electric starter or drill ON (I) button for 2-second intervals until the

unit starts.

in Position 2. After the unit starts, move the choke lever to

Position 3.

comes to a complete stop (Fig. 10).

HOLDING THE TRIMMER

MAINTENANCE SCHEDULE

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

WARNING: Always wear eye, hearing, foot and body protection I

Before operating the unit, stand in the operating position (Fig. 13). Check for the

following:

• The operator is wearing eye protection and proper clothing

With a slightly-bent right arm, the operator's right hand is holding the shaft

grip The operator's left arm is straight, the left

hand holding the handle The unit is at waist level

The cutting attachment is parallel to the ground and easily contacts the grass

without the need to bend over

ADJUSTING TRIMMING LINE LENGTH

The cutting head allows the release of trimming line without stopping the engine. To

Fig.13

release more line, lightly tap the cutting attachment on the ground (Fig. 14) while operating the trimmer at high speed.

NOTE: Always keep the trimming line fully extended. Line release

becomes more difficult as the cutting line becomes shorter.

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

proper length if excess line is released. For best results, tap the cutting head on bare ground or hard soil. If line

release is attempted in tall grass, the engine may stall. Always keep the trimming line fully extended. Line release becomes more difficult as the cutting line becomes shorter.

NOTE: Do not rest the cutting head 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 attachment parallel to the

Fig. 14

ground. Do not force the cutting attachment. 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.

Slowly move the trimmer 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 cutting head and shield are designed to allow the unit to cut in either direction, from right to left or left to right.

The life of the cutting line is dependent upon:

Proper adherence of explained trimming techniques

- What vegetation is 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 and more.

Rotate the whole unit so that the cutting attachment is at a 30 ° angle to the ground

(Fig. 15).

.L L_

Fig.15

_ ARNING: To prevent serious injury, never perform

maintenance or repairs with unit running. Always service and repair a cool unit.

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

unsure about these procedures take the 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.

FREQUENCY MAINTENANCE REQUIRED SEE Before starting Fill fuel tank with fresh fuel p. 6

engine Check oil p. 9 Every 10 hours Clean air filter p. 9

1st change at 10 Change oil p. 9 hours

Every 40 hours after Clean spark arrestor and change oil p. 11 Every 40 hours Check rocker arm to valve clearance p. 10

and adjust Check spark plug condition and gap p. 11

RAPID REWIND TM CUTTING HEAD LiNE INSTALLATION

Only use 0.095 in. (2.41 mm) replacement line.Other line width may make the engine overheat or fail.

NOTE: There may be a need to

remove the old line prior to installing new line. If

so, please refer to

Removing the old line or obstructions.

Align the arrows on the cutting

head knob with the outer

spool eyelets, if they are not already.(Fig. 16)

Using 10.5 ft. (3.2 m) of 0.095 in. (2.41 mm) replacement line

Eyelet

Fig. 16

push an end of the line through

one of the eyelets until it

protrudes through the opposite

side. Continue pushing or

pulling the line until the line is

evenly distributed, so approximately 5 ft. (1.5 m) is

visible from both sides of the cutting head.(Fig. 17)

3. Hold the cutting head knob and turn the cutting head clockwise

to wind the line around the

Fig. 17

inner reeluntil 5 in. (12.7 cm) is protruding from each side of

the cutting head.(Fig. 17)

NOTE: Ifwinding the line from a

large spool, push approximately 5 ft. (1.5 m)

of line through the cutting head to the other side.

Turn the cutting head to wind the line in. When the

line winds to a distance of 5 in. from the head, cut

Fig. 18

the line on the spool side 5 inches from the head.

Start the unit and bump the cutting head on the ground until the desired cutting length is achieved.

Cutting

Head Knob

Tab

REMOVING THE OLD LiNE OR

OBSTRUCTIONS

NOTE: There should only be a

1. Firmly press in on the tabs that

NOTE: It may be easier to press

2. Detach the bump cap either

3. Remove any old line from the

4. Place the inner reel back into the

5. Reattach the bump cap by

To install new line, please refer to

the Rapid Rewind Cutting Head

Line Instaflation section.

CHANGING THE CUTTING HEADS This unit was also shipped with a Hassle FreeTM PLUS cutting head. Either cutting

head may be used at the operator's discretion. Removing the Rapid Rewind TM Cutting Head

1. Align the shaft bushing hole with the locking rod slot and insert the locking

2. Hold the locking rod in place by grasping it next to the shaft housing of

3. While holding the locking rod, remove the cutting head by turning it

Installing the Hassle Free TM PLUS Cutting Head

need to remove the bump cap if there is an

obstruction or jammed line preventing either

new line installation or line advancement.

are on each side of the cutting

head. (Fig. 18)

in and then up on one tab at a time.

by letting it pop off, or a

slight wiggle of the cap may

be required to pull it off the

outer spool (Fig. 19)

inner reel or obstructions

from the outer spool. (Fig. 20)

outer spool (Fig. 19).

aligning the tabs of the bump cap with the tab lock

windows of the outer spool and press down firmly until

both tabs snap back into place. (Fig. 21)

rod into the output shaft bushing hole (Fig. 22).

the unit (Fig. 23).

clockwise off of the output shaft (Fig. 22). Store the cutting head for future use.

Bump Cap _ / Spring

inner

Heel --_-__._ Cutting

Head Knob

Outer _€:=_:::::_

Spool

L.j Gearbox

Fig. 19

Fig.20

Fig. 21

WARNING: The gear housing gets hot with use. It can result in

injury to the operator. The housing remains hot for a short time even after the unit is turned off. Do not touch the gear housing

until it has cooled.

WARNING: To avoid serious personal injury or damage to the I

unit, do not start or operate this unit with the locking rod in the locking rod slot.

1. Place the cutting head onto the output shaft and turn

counterclockwise until finger tight. (Fig. 24)

Align the output shaft bushing

hole with the locking rod slot

and insert the locking rod into the shaft bushing hole (Fig. 22).

Hold the locking rod in place by grasping it next to the

shaft housing of the unit (Fig.

23).

4. Using a 1/2 in (13 mm) open-end wrench, tighten the cutting head securely in place. Remove the locking rod.

Refer to the Hassle-Free TM PLUS line replacement instructions, for line installation.

Output

Shaft

Bushing

Locking

Hole ___

Rod

Rapid Rewind TM Head

Fig. 22

Removing the Hassle-Free TM PLUS Cutting Head

1. Align the output shaft bushing hole with the locking rod slot

and insert the locking rod into the output shaft bushing hole

(Fig. 22).

2. Hold the locking rod in place by grasping it next to the

shaft housing of the unit (Fig.

23).

3. Use a 1/2 in (13 mm) wrench to remove the cutting head

from the output shaft on the gearbox by turning

clockwise. (Fig. 24)

Installing the Rapid Rewind TM cutting head

1. Align the output shaft bushing hole with the locking rod slot

and insert the locking rod into the shaft bushing hole (Fig.

25).

2. Hold the locking rod in place by grasping it next to the

shaft housing of the unit (Fig. 23).

3. Screw the cutting head counterclockwise onto the output shaft. Tighten securely. (Fig. 25) Remove the locking rod.

HASSLE-FREE TM PLUS LiNE REPLACEMENT Always use Craftsman Hassle- Rapid RewindTM Head

Free TM XTRA QUIET Spiral Line. _ L

Choose the line size best suited for the job at hand. Red colored

line is designed for cutting grass Output and small weeds. Black colored Bushing

weeds and light brush. NOTE: Before inserting new line Locking

line is designed for cutting larger Hole "__--_'_'- _

NOTE: Do not mix lines. Use 2

1. Remove the old line and line

2. Clean entire surface of

3. Reinstall line glide plate (Fig. /\

NOTE: The glide plate must be Fig. 27

4. Insert both ends of the line

5. Push and/or pull the lineso that

6. Correctly installed line will be Fig. 28

NOTE: Make sure that when installing new line, that the line is as close to

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

into the holes in the Rod cutting head, identify the

proper holes. Follow Fig.25 directions as shown on

the glide plate. Do Not attempt to remove the Glide Plate cutting head from the

unit when replacing line.

black or 2 red only.

glide plate from the cutting head. Cuttin¢ Head

cutting head. Large Holes Ill\

26). 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.

installed in the cutting head before inserting Positioning Tunnel

through the large holes in the side ofthe cutting head (Fig.27).

new line.

the line is snug against the hub and is fully extended through

the positioning tunnels. (Fig. 28)

the same length on both sides.

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.

Glide Plate Hassle Free TM

Output Shaft

Shaft _:_::_J_

Fig. 23

_ PLUS Head

Fig. 24

NOTE:DonotresttheHassle-FreeTM PLUS Cutting Head 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

NOTE: During normal use the trimming line may become worn unevenly

CHECKING THE OiL LEVEL

-- i_ WARNING: Toavoidserious personalinjury,alwaysturnthe unit

The importance of checking and maintaining the proper oil level in the

crankcase cannot be overemphasized. Check oil before each use:

1. Stop the engine and allow oil

2. Place the unit on a flat, level

3. Keep dirt, grass clippings

4. Remove the oil fill plug.

5. Check the oil level. Oil

6. If the level is low, add a small

NOTE: Do not overfill the unit. Fig. 30 NOTE: Make sure the O-ring is in place on the oil fill plug when checking and

CHANGING THE OiL

-- i

_ AUTION: Wear gloves to prevent injury when handling the

For a new engine, change the oil after the first 25 hours of operation. Change

the oil while the engine is still warm. The oil will flow freely and carry away

more impurities.

1. Remove the oil fill plug.

2. Pour the oil out of the oil fill hole

3. Wipe up any oil residue on the

4. Refill the crankcase with 2.2

NOTE: Use the bottle and

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.

off and allow it to cool before cleaning or servicing it.

to drain into the crankcase.

surface to get a proper oil level reading.

and other debris out of the engine. Clean the area

around the oil fill plug before removing it.

should be just to the bottom of the threads of the oil fill

hole. (Fig. 30). amount of oil to the oil fill

hole and recheck (Fig. 30). Repeat this procedure until

the oil level reaches the

bottom of the threads in the oil fill hole.

changing the oil (Fig. 29).

unit.

and into a container by tipping

the unit to the side (Fig.31). Allow ample time for complete

drainage.

unit and clean up any oil that may have spilled. Dispose of

the oil according to Federal,

State and local regulations.

fl. oz. (60 ml) of SAE 30 SF,

SG, SH oil.

spout saved from initial use to measure the

correct amount of oil.

The top of the label on the bottle measures

approximately 3.04 ounces (90 ml) (Fig. 32).

Check the level (Fig. 25). If the level is low, add a small amount of oil and recheck. Do not overfill.

Replace the oil fill plug.

O-Ring_

Fig. 29

Add 1.4-1.5 Oz. _-_V_-_/,\

(41-44 ml)

Fig. 31

_ Fill Line

Fig. 32

Oil Fill Plug

Oil Fill Hole

AIR FILTER MAINTENANCE

_J AUTION: Wear gloves to prevent injury when handling the

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

2. Remove the air filter (Fig.38).

3. Wash the filter in detergent

4. Apply enough clean SAE 30

5. Squeeze the filter to spread

6. Replace the air filter into the

NOTE: Operating the unit

7. Reinstall the air filter cover.

IDLE SPEED ADJUSTMENT

The idle speed of the engine is adjustable. An idle adjustment

screw is between the air filter cover and the engine starter housing

(Fig. 39). NOTE: Careless adjustments

First, Check Fuel

Old fuel is usually the reason for

idle speed problems. Drain and refill the tank with fresh fuel prior

to making any adjustments. Refer to Oil and Fuel Information.

Second, Clean Air Filter The condition of the air filter is

important to the operation of the unit. A dirty air filter will restrict air

flow. This is often mistaken for an out of adjustment idle. Check the

condition of the air filter before adjusting the idle speed screw.

Refer to Air Filter Maintenance.

unit.

pressing the lock tab inand pulling out on the air filter

cover (Fig. 33 & 34).

and water (Fig. 35). Rinse the filter thoroughly and allow it to

dry.

motor oil to lightly coat the

filter (Fig. 36).

and remove excess oil (Fig.

37).

base plate (Fig. 38).

without the air filter, will VOID the warranty.

Position the two small tabs

on the air filter cover into the two slots in the back plate

and press the air filter cover down, making sure to align

the lock tab with the lock tab slot, until it snaps into place

(Fig. 34 & 33).

can seriously damage the unit. Aside from idle

speed, only a Sears or other authorized service

dealer should make carburetor adjustments.

Air Filter Cover

Black

Plate

Air

Fig. 33

Back Plate

Fig. 34

Fig.35

Fig. 36

Fig. 37

Fig. 38

Third, Adjust Idle Speed Screw • Both rocker arms move Adjusting Nuts

_ ARNING: The cutting attachment may spin during idle speed _

If, after checking the fuel 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

2. Release the throttle trigger

NOTE: The cutting attachment should not rotate when the engine idles.

3. If the cutting attachment rotates when the engine idles, turn the idle

Checking the fuel, cleaning the air filter, and adjusting the idle speed should solve most engine problems. If not and any of the following are true have the

unit serviced by a Sears or other qualified service dealer:

• the engine will not idle

ROCKER ARM CLEARANCE

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

This requires disassembly of the engine. If unsure or unqualified to perform this maintenance, take the unit to a Sears or other qualified service center.

NOTE: Inspect the valve to Remove Screws

1. Remove the two (2) screws on

2. Remove the engine cover

3. Disconnect the spark plug

4. Clean dirt from around the

5. Clean dirt from around the

adjustments. Wear protective clothing and observe all safety instructions to prevent serious personal injury.

Adjustment

Screw

at a high idle for a minute to warm up. Refer to

Starting/Stopping Instructions.

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. 39). Turn the idle speed screw in, clockwise, 1/8 of a turn at a time (as needed) until the engine idles

smoothly.

speed screw counterclockwise 1/8 of a turn at a time (as needed), to reduce idle speed.

the engine hesitates or stalls on acceleration there is a loss of engine power

off and allow it to cool before cleaning or servicing it. |

rocker arm clearance with a feeler gauge after

the first 25 hours of

operation and then every 25 hours of operation

thereafter.

The engine must be cold when checking or adjusting the valve

clearance. This task should be performed

inside in a clean, dust free area.

back of the engine cover and the one on the front of the

engine cover with a Flat-head or T-25 Torx screwdriver (Fig.

40).

(Fig. 41).

wire.

spark plug. Remove the spark plug from the cylinder

head by turning a 5/8 in. (16 mm) socket

counterclockwise.

rocker arm cover. Remove the screw holding the rocker

arm cover with a large flat blade screwdriver or Torx T-

25 bit (Fig. 42). Remove the rocker arm cover and gasket. Pull the starter rope slowly to bring the piston to the top of its travel,

(known as top dead center). Check that: The piston is at the top of its travel. This should be done by looking into the

spark plug hole. (Fig. 42)

_-/l!_:_f.............,_----_ Engine

Rocker Arm

Cover

Spark Plug

Hole

Fig.39

Fig. 40

Muffler

Fig. 41

Screw _-----t_

Fig. 42

freely, and both valves are closed

If these statements are not true,

repeat step 6.

7. Slide the feeler gauge between the rocker arm and

the top of each valve stem.

Measure the clearance

between the valve stem and rocker arm (Fig. 43). Measure

both the intake and exhaust valves.

The recommended clearance for both

intake and exhaust is .003 - .006in.

(.076 - 0.152 mm). Use astandard automotive .005in. (0.127mm)feeler

gauge. The feeler gauge should slide between the rocker arm and valve

stem with a slight amount of resistance, without binding. Figure 43

and 44 show how to measure the clearance.

If the clearance is not within specification:

Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver (Fig. 43). To increase clearance, turn the adjusting nut counterclockwise. To decrease clearance, turn the adjusting nut clockwise.

Recheck both clearances, and adjust as necessary.

Reinstall the rocker arm cover using a new gasket. Torque the screw to

20-30 inolb (2.2-3.4 Norn).

10.

Check the spark plug and reinstall. See Replacing the Spark Plug.

11.

Replace the spark plug wire.

12.

Reinstall the engine cover. Check alignment of the cover before

tightening the screws. Tighten screws.

REPLACING THE SPARK PLUG

Use a replacement Champion ® RDZ4H spark plug. The correct air gap is

0.025 in. (0.635 rnm}. Remove the plug after every 25 hours of operation and

check its condition.

1. Stop the engine and allow it to cool. Remove the two (2)screws on back of the engine cover and the one on the front of the engine cover

with a Flat-head or T-25 Torx screwdriver (Fig. 40).

2. Grasp the plug wire firmly and pull the cap from the spark plug.

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

3. Clean dirt from around the I 1

4. Replace cracked, fouled or

5. Install a correctly-gapped 1'

If using a torque wrench, torque to: 110=120 in.=lb. (12.3=13.5 N=rn}

Do not over=tighten.

electrodes. Grit in the engine could damage the cylinder.

spark plug. Remove the spark plug from the cylinder

head by turning a 5/8 in. socket counterclockwise.

dirty spark plug. Set the air gap at 0.025 in. (0.635 rnrn} ,_

using a feeler gauge (Fig. 45). 0.025 in.

spark plug in the cylinder Fig. 45 head. Turn the 5/8 in. socket

clockwise until snug.

Rocker

Arms

Exhaust Rocker Arm

0.003-0.006 in. _ "_'_ _

(0.076-0.152 mm)

(0.635 ram)

INTAKE

EXHAUST

Fig. 43

/ Fee,er

Gauge

Valve Stem

Fig. 44

I I

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