6.5 Horsepower

KEY START

HIGHWHEEL WEEDTRIMMER:

MODEL NO.

536.773520

Caution:

Read and follow all Safety Rules and Operating Instructions before first use of this product,

SEARS, ROEBUCK AND CO., Hoffman Estates, IL 60179 U.S

712344 02/10/99

TABLE OF CONTENTS

WARRANTY STATEMENT

SAFETY RULES ...............

......

INTERNATIONAL SYMBOLS ....

ASSEMBLY ...................

OPERATION ...................

MAINTENANCE ................

SERVICE AND ADJUSTMENT ..,

13

16

6

9

2

3

5

TROUBLE SHOOTING CHART ..

21

SLOPE GUIDE .................

23

REPAIR PARTS ................

ENGINE REPAIR PARTS ........

24

29

SPANISH (ESPANOL) ..........

PARTS ORDERING/SERVICE ...

38

64

WARRANTY STATEMENT

LIMITED TWO-YEAR WARRANTY ON CRAFTSMAN WEEDTRIMMER

For two years from the date of purchase, when this CraftsmanWeedtrimmer is maintained, lubricated,and tuned ,up according to the operating and maintenance instructionsin the

owner's manual, Craftsman wilt repair, free of charge, any defect in material or workman- ship.

If this CraftsmanWeedtrimmer is used for commercial or rental purposes, this warrantyappliesfor only 90 days from the date of purchase.

This warranty does not cover the following;

Expendable items which become worn during normal use, such as spark plugs, etc.

• Repair necessary because of operator abuse or negligence,includingbent crankshafts and the failure to maintain the equipmentaccording to the instructionscontainedin the owner's manual.

WARRANTY SERVICE IS AVAILABLE BY RETURNING THE CRAFTSMAN WEED°

TRIMMER TO THE NEAREST CRAFTSMAN SERVICE CENTER/DEPARTMENT IN THE

UNITED STATES. THIS WARRANTY APPLIES ONLY WHILE THIS PRODUCT IS IN USE

IN THE UNITED STATES.

This warranty gives you specific legal rights, and you may also have other rights which may vary from state to state.

Sears, Roebuck and Co., D81"7WA, Hoffman Estates. IL 60179

of to cause cancer, birth defects or other reproductive harm.

tP

IMPORTANT: This unit |a equipped with an internal combustion engine and must not be used on or near any unimproved forest-covered, brush-covered or grass-covered land

unless the engine's exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any). If a spark arrester is used, it must be maintained in

effective working order by the operator.

In the State of California the above is required by law (Section 4442 of the California

Public Resources Coda). Other states may have similar laws. Federal laws apply on fed-

eral lands. See an Authorized Service Center for a spark arrester for the muffler,

712344 2

SAFETY RULES

Safe Operation Practices for Trimmer.

A

L General Operation

1.

Read, understand, and follow all instructions on the machine and in the manual(s).

Be thoroughly familiar with the controls and the proper use of the trimmer before starting.

2.

Familiarize yourself with all of the safety and operating decals on th_s equipment and on any of its attachments or accessories.

3.

Do not put hands or feet near or under rotat- ing parts,

4.

Only allow responsible individuals, who are femi{iar with the instructions, to operate the trimmer.

5.

_nspect the area where the trimmer is to be

used. Your equipment can propel small ob-

jects at high speed causing personal injury or property damage.

Stay away from breakable objects, such as house windows, auto glass, greenhouses, etc,

6.

Keep the area of operation clear of all per- sons, particularly small children, end pets.

7, Wear appropriate clothing such as a long-

sleeved shirt or jacket, Also wear long trou-

sers or slacks, Do not wear shorts,

8.

Do not wear loose clothing which could get caught in this equipment.

9.

Always wear safety goggles or safety glasses with side shields when operating trimmer to protect your eyes from foreign

objects which can be thrown from the unit.

10. Always wear work gloves and sturdy footwear.

Leather work shoes or short boots

work well for most people. These will pro- tect the operator's ankles and shins from smell sticks, splinters, and other debris,

and improve traction.

11. It is advisable to wear protective headgear to prevent the possibility of being struck by

small flying particles, or being struck by low hanging branches, twigs, or other objects

which may be unnoticed by the operator.

12, Do not operate the trimmer without proper guards or other safety protective devices in place.

13, Use this equipment for its intended pur- pose only.

14. See manufacturer's instructions for proper

operation and installation of accessories.

712344 3

Only use accessories approved by the manufacturer.

15. Operate only in daylight or good artificial light.

16. Do not operate the trimmer while under the influence of alcohol,drugs or other medication which can cause drowsiness or effect your abilityto operate this machinesafely.

17. Never operate trimmer in wet grass. Al-

ways be sure of your footing; keep a firm

hold on the handle and walk; never run.

18. Before each use, inspectthe throttle controt lever end cable.

Make sure that the

cable is free and that the lever is not dam-

aged. Also check the cable linkage running

to the carburetor for kinks, loose fittings, end obstructions. Verify that the control bailis working properly.

19. Stopthe rotatingtrimmerhead when crossinggravel drives, walks, or roads. Wait for the cutting linesto stop rotating.

20. Watch for traffic when operating near, or

when crossing roads.

21. Stop the engine (motor) whenever you leave the equipment, before cleaning re-

pairing or inspecting the unit, be sure the

trimmer head and all moving parts have

stopped. Let the engine cool, disconnect

the spark plug wire and move it away from the spark plug.

22. If the equipmentshouldstart to vibrate abnormally,stop the engine (motor), discon-

nectthe spark plug wire and prevent itfrom

touchingthe spark plug. Check immediate-

ly for the cause. Vibration is generally a warningof trouble.

23. After striking a foreign object, stop the en-

gine (motor). Remove the wire from the spark plug. Inspect the trimmer for damage. If damaged, repair beforestarting and operatingthe trimmer.

24. Never leave the trimmer unattendedwhen the engine is running.

from the spark plug.

Remove the wire

25. Regularly inspectthe trimmer. Make sure parts are not bent, damaged or loose.

II. Slope Operation

Slopes are a majorfactor related to slip and fall accidents which can result in severe injury,All

SAFETY RULES c.

Never refuelthe machine indoors, slopes require extra caution. If you feel uneasy on a slope, do not trim it,

Do trim across the face of slopes; never up and down. Do not trim excessively steep slopes

(ma.%lmum 15 degrees) or areas where the ground is very rough. See the "Guide" in the back of this manual to check a slope. Exercise extreme caution when changing direction on slopes.

Do remove objects such as rocks, tree limbs, etc.

Do watch for holes, ruts, or bumps. Tall grass can hide obstacles.

Do not trim near drop-offs, ditches, or embankments. The operator could lose footing or balance,

Do not trim excessively steep slopes.

Do not trim on wet grass. Reduced footing could cause slipping,

IlL Children

Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the trimmer and the trimming

activity. Never assume that children will remain where you last saw them,

1.

Keep children out of the trimming area and under the watchful care of a responsible adult.

2.

Be alert and turn trimmer off if children en- ter the area.

3.

Before and while moving backwards, look

behind and down for small children.

4.

Nev_ allow children to operate the trimmer.

5.

Use extra care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.

6.

On electric start models, remove the igni-

tion key to prevent accidental starting when

the trimmer is not is use.

IV. Service

1.

Use extra care in hand$inggaso$ineand other fuels: They are flammable and vaporsare explosive.

a.

Use onlyan approvedcontainer. b.

Never remove gas cap or add fuel with the engine running. Allow engine to cool before refueling.Do not smoke.

d.

Never store the machine or fuel container inside where there is an open flame, such as a water heater,

2.

Never run an engine indoors or inside a

closed area.

3.

Never make adjustments or repairs with

the engine (motor) running. Disconnect the spark plug wire, and keep the wire away

from the plug to prevent accidental starting

(remove the ignition key if equipped with an electric start), Always wear eye protection

when you make adjustments or repairs.

4.

Check the trimmer head and engine mounting bolts at frequent intervals for proper tightness.

5.

Keep all nuts and bolts tight and keep equipment in good condition.

Check mounting hardware on trimmer head every

time you change trimmer line and prior to each use.

6.

Never tamper with safety devices. Check their proper operation regularly.

7.

When servicing or repairing the trimmer, do not tip the machine over or up unless spe-

cifically instructed to do so in this Manual.

Service and repair procedures can be done with the trimmer in an upright position.

Some procedures will be easier if the machine is lifted on a raised platform or working surface.

8.

To reduce fire hazard, keep trimmer free of grass, leaves, or other debris build-up.

Clean up oil or fuel spillage. Allow trimmer to cool before storing.

9.

Stop and inspect the equipment if you

strike an object. Repair, if necessary, before restarting.

10. Always disconnect spark plug wire before cleaning, repairing, or adjusting.

11. Do not change the engine governor setting or over-speed the engine,

12. Clean and replace safety and instruction

decals as necessary.

13. To guard against engine over-heating, always hav_ engine debris lister mounted and clean.

14, Inspect trimmer before storage.

15, Use only original equipment or authorized replacement parts.

712344 4

SAFETY RULES

INTERNATIONAL SYMBOLS

IMPORTANT: Many of the following symbols are located on your unit or on literature sup- plied with the product. Before you operate the unit, learn and understand the purpose for each symbol.

ControlAnd OperatingSymbols

Slow Fast Fuel

SafetyWarningSymbols

A

WARNING

Thrown Objects.

Keep Bystanders Away.

WARNING

Rotating Parts. Stop Engine.

Disconnect Spark Wire Before

Making Adjustments.

WARNING

OII

IMPORTANT

Read Owner's Manual

Before Operating

This Machine.

WARNING

Wear Eye Protection

STOP

WARNING

Never Operate Up Or

Down Slopes. Operate

Across Slopes.

712344 5

ASSEMBLY

CONTENTS OF PARTS BAG

1 Owner's Manual

- Parts Bag

ASSEMBLY

(Not shown actual size)

1-wTr-...2,,a-

WARNING: Always wear safety sembling the trimmer.

TOOLS REQUIRED

1 - Knife to cut carton.

1 - T-Handle Wrench.

Figure 1 shows the trimmer completely assembled and positioned in the carton for ship- ment.

References to the right or left hand side of the trimmer are from the viewpoint of the opera- tor's position behind the unit,

'

TO REMOVE THE

TRIMMER FROM CARTON

1.

Remove the parts bag and all loose parts from carton.

I

I

2.

Remove the packing material positioned aroundthe unit.

3.

Cut down all four corners of the cartonand lay the side panelsflat.

4.

Pull the trimmer out of the carton and off

the base pad.

5.

Remove packing materialfrom aroundthe trimmer head.

6.

Remove protective plastic from front of frame.

712344 6

Figure 1

ASSEMBLY

HOW TO RAISE THE HANDLE

1.

Hold the handle with one hand and loosen both handle adjustment knobs until the ratchet teeth are disengaged. Do not remove the handle adjustment knobs. See Figure 2.

2.

Raise the handle to the

operating position.

3.

Stand in the operator's position behind the trimmer. Put the handle in a

Handle comfortable position.

Make sure both sides of the handle are level.

NOTE: Make sure the cables are not caught between the upper and lower handle.

Recoil Start

Handle

Handle

Pivot

4.

Tighten the handle adjustment knobs, Make sure the handle pivots are locked in place,

NOTE: The handle height is adjustable.

Sea "How To Adjust

The Height Of The Handle" in the Adjustment section.

Handle Adjustment

Knob

Rgure 2

5.

To attach the recoil start handle to the rope guide, twist the rope through the rope guide mountedon the rightside of the handle.

HOW TO INSTALL

THE ENGINE DEBRIS SHIELD

1.

2.

Remove the engine debris shield from the protective packaging.

Attach the engine debris shield to the two mounting brackets with the wingnuts as

shown in Figure 3. Make sure the wing-

nuts are tight.

Engine Debris Shield

Mounting

Bracket

Wingnut

/

Figure3

712344 7

ASSEMBLY

ENGINE PREPARATION

Fill Crankcase With Oil

The trimmer was shipped with a container of

SAE30 motor oil. This oil must be added to the engine before operating.

1, Remove the oil fill cap/dipstick shown in

Figure 4. Fill the crankcase to the FULL line on oilfill cap/dipstick. DO NOT OVER-

FILL.

2.

Install the oil fill cap/dipstick and tighten securely.

Fill Fuel Tank With Gasoline

For the correct procedure and grade of

gasoline, see "How To Fill With Gasoline" in the Operation section.

ELECTRIC START BATTERY

When the mower was shipped from the factory, the battery was not fully charged. Before the

first use, the battery must be charged for

16-24 hours. See "How To Charge The Bat- tery" in the Service And Adjustment section.

Fuel Cap

Oil Fill Cap/

Dipstick

Figure 4

_" CHECKLIST

For the best performance and satisfaction from this quality product, please review the following checklist before you operate the trim- mer:

P"

•_"

All assembly instructions have been completed.

Check carton. Make sure no louse parts

remain in the carton.

As you learn how to use the trimmer, pay extra

attention to the following important items:

r_P " Engine oil is at correct level.

J."_,_" Fuel tank is filled with fresh, clean, reg- ular unleaded gasoline.

P",_" Become familiar and understand the function of all controls. Before your start the engine, operate all controls.

712344 8

OPERATION

KNOW YOUR TRIMMER

READ THE OWNER'S MANUAL AND ALL SAFETY RULES BEFORE YOU OPERATE the trimmer, To familiarize yourself with the location of the controls, compare the illustrations with your trimmer. Save this manual for future reference,

Control Bail

Trimmer Head Drive Lever

Handle

Ignition Switch

Throttle Control Lever

Recoil Starter Handle

Fuel Cap

Engine Debris Shield

Handle Adjustment Knob

Dipstick

Trimmer Head

Shield Edge Guard _"

Trimmer Head Drive Lever Engages the rotation of the trimmer head.

Control Ball - Release to stop the rotation of the trimmer head.

Throttle Control Lever Controls the speed or stops the engine.

Primer Button - Injects fuel directty into the carburetor manifold for fester starts.

See

Figure 8.

Figure5

Recoil Starter Handle - The engine is equippedwith an easy pull recoil starter.

Ignition Switch - Use on key-start engine.

Shield Edge Guard - Protects the shield by automaticallycuttingthe line to the correct length.

Engine Debris Shield - Protects the en-

gine from debris. Can be easily removed to service the engine.

EYE PROTECTION

WARNING: Debris thrown from the trimmer can resuR in foreign

HOW TO STOP

THE TRIMMER HEAD

eyes, which can cause severe objects being thrown into the eye damage.

Always wear safety glasses or eye shields when operating the trimmer.

Always wear safety glasses. If you wear eye

glasses, put a Wide Vision Safety Mask over your eye glasses.

712344 9

1.

Release tl_e control bell. It will return to its

open position and disengage the trimmer head,

HOW TO STOP THE ENGINE

1.

Move the throttle control lever completely back to the STOP position,

OPERATION

HOW TO USE THE

TRIMMER HEAD DRIVE LEVER

2.

1.

To engage the trimmer head, hold the control bail against the handle.

Move the trimmer head drive lever forward to engage the trimmer head. See Figure 6. The faster the engine runs, the fester the trimmer head will rotate.

Once the trimmer head is rotating, push the trimmerforward to trim.

HOW TO USE THE

THROTTLE CONTROL

1.

During normal use, set the throttle control lever in the FAST position to run the

engine at full speed.

2,

Pull the throttle control lever back to decrease engine speed.

Push the throttle control lever forward to increase engine speed.

3.

To stop the engine, pull the throttle control lever completely back to the STOP position.

HOW TO USE

THE PRIMER BUTTON

1.

Push the primer button five times.

See

Figure 8 for location. Wait approximately two seconds between each push.

NOTE: Do not use the primer button to re- start a warm engine after a short shutdown.

Throttle Control

Lever

Figure 7

712344 10

I

OPERATION

BEFORE STARTING THE ENGINE

Oil Recommendation

Only use high quality detergent oil rated with

API service classification SG. Select the oil's

SAE viscosity grade according to your expected operating temperature:

32OF

Colder _,_ -_I-_,b --_ Warmer I

<(--'---1---"-->> I

=m, f '==' == I

5w30 SAE30 [

I

How To Fill With Gasoline

NOTICE: ENGINES WHICH ARE CERTI-

FIED TO COMPLY WITH CALIFORNIA AND

US EPA EMISSION REGULATIONS FOR

ULGE ENGINES: Are certified to operate on reguisr unleaded gasoline, include the following emission control system(s): EM, TWC (if so equipped). Include any user adjustable features-therefore no other adjustments are needed.

WARNING: Never fill the gas tank

NOTE: Although multi-viscosity oils

(5W30, 10W30, etc.) improve starting in cold weather, these multi-viscosity oils will result in increased oll consumption when used above 32°F. To avoid possible engine damage from running low on oil, frequently check your engine oil level.

while the engine Is running or before adding gasoline. Immediately wipe off any spilled gasoline before you start the engine.

Check The Engine Oil

Before each use, check the engine oi_ as follows:

1.

Put the trimmer on a level surface.

2.

Remove the oil fill cap/dipstick shown in

Figure 9.

3.

Make sure the oil reaches the FULL mark on the oil fill cap/dipstick.

4.

If necessary, add oil until the FULL mark on the oil fill cap/dipstick is reached.

DO

NOT OVERFILL.

See "Oil Recommendation" for the grade and type of oil to use.

Fuel Cap

Oil Fill Cap/Dipstick

Debris Screen

A

WARNING: Gasoline Is flammable. Usa caution when hanaway from an open flame or an electrical spark. Do not smoke while filling the fuel tank. Store gasoline In a clean, approved container In a cool well ventilated place; never In the house.

Fill the fuel tank with a fresh, clean, unleaded regular, unleaded premium, or reformulated automotive gasoline only.

DO NOT use leaded gasoline.

Be sure that the gasoline

container is clean and free from dust or other foreign particles. Never use gasoline that is stale from long periods of storage. Reinstall fuel cap.

CAUTION: Alcohol blended fuels (called gasohol or using methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic

gas can damage the fuel system of an engine while in storage. To avoid engine problems, empty the fuel system before

storage of 30 days or longer. Drain the fuel tank. Start the engine and let it run until the

fuel lines and carburetor are empty. Never usa engine or carburetor cleaner products

in the fuel tank or permanent damage may

occur. See "Storage Instructions" for addi- tional information.

Figure g

11 712344

OPERATION

HOW TO START THE ENGINE

NOTE: DO NOT BE ALARMED, your engine will smoke the first time it is started.

It is burning off the protective coating that is on the internal engine parts.

Figure 10. Pull back sharply on the recoil starter handle.

DO NOT allow the starter rope to snap back.

Let the starter rope slowly rewind as you hold the recoil starter handle.

A mer unattended whil the engine is runngln. Wait for the trimmer lines to stop rotation.

NOTE: If engine fails to start etter three at- tempts, push the primer button two times

and again try to start the engine.

Before each use, remove debris from the debris screen shown in Figure 9. Debris can cause the engine to overheat. Wipe the debris screen with a cloth or paper towel.

2.

Key Start: Make sure the battery is connected to the wiring harness.

3.

Move the throttle control lever forward to the START or FAST position.

5,

4,

To starta coldengine,pushthe primerbutton five times. Wait two seconds between

each push of the primer button.

NOTE: Do not use the primer to start a warm engine.

Key Start: Turn the ignition key to the

START position. Use short starting cycles

(15 seconds per minute). When the engine starts, release the ignition key. If the engine will not turn over, charge the battery.

See "How To Charge The Battery".

6.

Recoil-Start: Firmly hold the recoil starter handle with your right hand, See

_k

area. Engine exhaust contains carbon monoxide, an odorless and deadly gas. Keep hands, feet, hair and loose clothing away from the trimmer and any moving parts on the engine. Avoid the muffler and surrounding areas. Temper-

atures may exceed 150°1=.

Ignition Key /

Figure 10

TRIMMER TIPS

A gravel or rocks, can be thrown with sufficient force to cause personal injury or property damage.

Set the throttle control in the FAST posi-

tion. If the weeds or grass are tall and

thick, operate the trimmer at a slower walking speed.

Frequently clean the underside of the trimmer to remove any grass build up. See the

Maintenance section for details.

For best results and longer lasting line,

use the ends of the line to do the cutting.

This is easily done by moving slowly through very thick or heavy weeds.

712344 12

If the trimmer lines become too short, it will

take longer to complete the job. If the trim- mer lines are worn to less than half their

original length, change to a new trimmer

line. "See How To Change The Trimmer

Line" in the Service And Adjustment section.

Do not trim on excessively steep slopes. If

a slope isdifficult to stand on, do not trim.

Do not trim on slopes when the ground is

slippery or wet. Trim across the face of a

slope, not up and down.

Trimmer head contact to concrete, asphalt and harder services may create premature wear to the height guide (See

Figure 18).

MAINTENANCE

CUSTOMER RESPONSIBILITIES

:

SERVICE RECORDS

Fill in dates as you complete regular

service.

Before Every Every Every

Each 5 25 100 As

Use Hours Hours Hours Noted

:i:ilii

SERVICE

DATES

Check trimmertines ,_/

Engine/Machine Cleaning %/"

; i

1

!!

2

Check Spark Plug

: ::::: :::;:,

"V"

::::::; :: :::::: :: :::

Lubricate Wheel Bearings

¢

Note I - When old line is half the original length, replace with new line.

Note 2 - Clean daily if used in extremely dusty or dirty conditions.

Note 3 - Change more often ff used in extremaly dusty or dirty conditions.

Note 4 - Charge battery before each season and before winter storage.

PRODUCT SPECIFICATIONS

Trimmer Line Diameter

Trimmer Line Length

Horse Power

Displacement

Gasoline Capaoity

Oil Capacity

Spark Plug

Spark Plug Gap

712344

0,155 inch

21.5 inches

6.5

12.0 cu, in.

1.5 quarts

20 oz.

Champion

RJ-19LM

0,0,30 inch

GENERAL RECOMMENDATIONS

The warranty on this trimmer does not cover items that have been subjected to operator abuse or negligence.To receive full value kom the warranty, the operator must maintain the trimmeras instructedin this manual.

Some adjustments must be made periodically to properlymaintainyour trimmer.

13

All adjustments in the Service and Adjust- mentssectionof this manual must be checked at least once each season.

MAINTENANCE

LUBRICATION

How To Lubricate

The Jackshaft Assembly

A grease fitting is provided to lubricate the jackshaft assembly. Use a grease gun with au- tomotive type grease to lubricate the jaskshatt assembly as shown in Figure 11.

How To Change Engine Oil

Change the engine oil when the engine is

warm, Forthe properoilcapacity,see "Product

Specifications", t.

Disconnectspark plugwire from the spark plug.

2.

Remove the oil drain plug as shown in

Figure 12.

3.

Drain all the engine oil intoa fiat pan.

4.

Install the oil drain plug. Make sure the oil drain plug is tight.

5.

Remove the dipstick.

6.

Fill the engine crankcase. DO NOT

OVERFILL. For proper oil capacity, see

"Product Specifications".

7,

Cohnect the spark plug wire to the spark plug.

HOW TO REPLACE THE AIR FILTER

Replace the air filter once a year or more often in dusty or dirty conditions, DO NOT attempt to

clean or oil the air filter. Remove and install a

new air filter as follows:

CAUTION: Never run the engine without the air filter installed. An air filter clogged with dust can result in loss of engine power and can cause excessive wear or damage to the engine. If the air filter Is clogged, replace Immediately.

1.

Disconnect the spark plug wire from the spark plug,

2.

Turn the cover clockwise as shown in

Figure 13. Remove the cover and the air filter,

3.

Discard the old air filter.

4.

Clean the cover and the flange.

712344 14

5,

7,

Put the new air filter into the cover.

6.

Push the cover firmly against the flange.

Turn the cover counterclockwise until tight. Be sure the retainers are locked around the flange.

Connect the spark plug wire to the spark plug.

MAINTENANCE

HOW TO SERVICE

THE ENGINE AND SPARK PLUG

1.

To access the engine or the spark plug, re- move the engine debris shield as shown in

Figure 14.

2.

After engine service is completed, replace

the engine debris shield.

SPARKPLUG

Check the spark plug every 25 hours.

Replace the spark plug if the electrodes are pitted or burned or if the porcelain is cracked.

1,

Make sure the spark plug is clean. Clean the spark plug by carefully scraping the

electrodes (do not sand blast or use a wire brush).

2.

Check the spark plug gap with a feeler

gauge. See "Product Specifications"for the correct spark plug gap and replacement spark plug.

3.

Before installingthe spark plug, coat the

threads lightlywith oil for easy removal.

Tighten the spark plug to a torque of 15 foot-pounds.

712344 15

SERVICE AND ADJUSTMENT

SERVICE AND ADJUSTMENT

_h) WARNING: Before you inspect, clean or service the trimmer, stop the engine.

spark plug.

HOW TO

REPLACE THE TRIMMER LINE

For the best performance, use a heavy gauge (0.155" diameter) trimmer line. Cut

the length of the trimmer line to 21.5 inches.

Use the length guide, located on the shield, to make sure the trimmer line is the correct length. See Figure 16, Do not allow the length of the lines to vary more than one inch. This is important to make sure the trim-

mer head is balanced and does not vibrate.

IMPORTANT: To extend the life of the trimmer line, keep the trimmer line moist, if not kept moist, the nylon trimmer line will become dry and brittle. Keep extra trimmer

line In a can of water. The line will then stay

flexible and easy to change. A flexible line will also last much longer.

HOW TO CHANGE TRIMMER LINES

When the trimmer line becomes worn to half the original length, replace the trimmer line as follows:

Une

Retainer

Trimmer

Line

1.

Stop the engine. Wait for all moving parts to stop.

2.

Remove worn trimmer line from line retainer,

3, First, thread the ends of the new trimmer line through loops.

the outside

Une

Retainer

4.

Next, take the ends of the tine. cross over the line retainer, and thread the ends through the center hole.

5.

Then, check to make sure that the ends of the line are even.

712344 16

SERVICE AND ADJUSTMENT

HOW TO ADJUST

THE HEIGHT OF THE HANDLE

I

I

Handle

Use the knoba, on each side of the handle, to adjust the height of the handle.

1.

Hold the handle with one hand and loosen both knobs until the ratchet teeth are dis-

engaged. Do not remove the knobs. See

Figure 17.

2.

Move the handle up or down to the desired position, then align the ratchet teeth. Make sure both sides of the handle are level.

3.

Tighten the knobs.

Ratchet

Teeth

I

HOW TO SET THE HEIGHT OF CUT

CAUTION: Before you set the height of cut: stop the engine.

Wait for all moving parts to stop.

Allow the engine to cool and disconnect the spark plug wire.

The height of cut can be set from 1-1/'2 inches to 3 inches. Recommended cutting height for the average yard is 2".

1, Use the T-wrench, found in the parts bag, to loosen the set screw shown in

Figure 18,

2.

Set the trimmer head at the desired height.

3.

Tighten the set screw.

Height Of

Set Screw

Height Guide

.__t;

Trimmer

Head

Rgure 18

712344 17

SERVICE AND ADJUSTMENT

HOW TO

REPLACE THE DRIVE BELT

To replace the drive belt, the trimmer head and shield must be removed as follows.

_lb the drive belt, disconnect the wire

WARNING: Before you remove from the spark plug.

1.

Remove the two fasteners that hold the rear of the shield to the trimmer housing

(See Figure lg).

2.

Remove the four fasteners that hold the

front of the shield and trimmer head to the trimmer housing,

3.

Remove the "V" pulley from the idler bracket.

4.

5.

Raise the front of the trimmer housing and remove the drive belt. On some mod- els, it is necessary to loosen the mounting bolt forthe drive pulley to remove the drive belt (see Figure20). Do not bend the belt guides.

NOTE: Make sure you replace the drive belt only with a replacement belt from the factory.

To assemble the drive belt, reverse the

above steps, Make sure all fasteners are tight. Make sure the mounting bolt for the drive pulley Is tight.

6.

Check the routing of the drive belt. Make sure the drive belt is inside of all belt guides shown in Figure 20.

IMPORTANT: Test the drive system. Start the engine and move the throttle control to the FAST position. Engage and disengage the trimmer head several times. When dis-

engaged, make sure the trimmer head completely stops when resting on the ground. If the trimmer head continues to rotate, take the trimmer to the nearest Craftsman

Service Center.

Drive Belt -

Belt e .Pulley

Figure 20

712B44 18

SERVICE AND ADJUSTMENT

HOWTO CHARGE THE BATTERY 3 Chargethe batteryfor16-24 hours.

4.

Disconnect the battery charger from the electrical outlet and from the battery.

_ sulfuric acid which is harmful to

WARNING: The battery contains kthe skin, eyes and clothing. If acid gets on the body or clothing, wash with

water. Do not attempt to open the battery.

If the battery has a crack, replace the battery. Do not burn a damaged or old battery

or an explosion can result.

5.

Connect the wiring harness to the battery. If the battery will not be used for a long period of time or during storage, do not connect the wiring harness to the battery.

A WARNING: When you charge the battery, do not smoke.

Keep the battery away from any sparks.

The fumes from the battery acid can cause an explosion.

The battery is in the battery case mounted under the rear frame.

IMPORTANT: Make sure to use the battery charger supplied with the mower. The use of any other battery charger will damage the battery.

1.

Disconnect the wiring harness from the battery (Figure 21).

2.

Attach the battery charger wire to the battery. Connect the battery charger to an

electrical outlet.

HOW TO REMOVE THE BATTERY

If the engine will not turn over or turns over slowly when the key is turned on, charge the

battery. See "How To Charge The Battery". (f the battery will not charge fully and will not start

the engine, replace the battery as follows.

1.

Disconnect the wiring harness from the battery (Figure 21).

2.

Remove the two screws that secure the battery caseto the frame (Figure 2 t). Re-

move the battery case from the frame.

3.

To open the battery case, remove the two screws (Figure 22), Remove the battery from the battery case.

4.

Replace the battery with an authorized factory replacement battery.

5.

Charge the new battery for 15 hours. See

"How To Charge The Battery".

6.

To install the battery, reverse the above steps.

712344 19

Battery

Battery

Battery

Figure 22

SERVICE AND ADJUSTMENT

STORAGE

WARNING: Do not remove gasoline while Inside a building, near

a fire, or while you smoke. Gasoline fumes can cause an explo-

sion or a fire.

When the trimmer is put in storage for thirty days or more, follow the steps below to

make sure the trimmer is in good condition the following season.

Trimmer

Completely clean the trimmer.

Put the trimmer in a building that has good ventilation.

NOTE: A yearly checkup or tune-up at a

Craftsman authorized service center will make sure that the trimmer will provide maximum performance for the next season.

Engine

IMPORTANT: It is important to prevent gum deposits from forming in fuel system parts such as the carburetor, fuel filter, fuel hose, and tank during storage. Also, using alcohol-blended fuels (called gaeohol, ethanol

or methanol) can attract moisture which

leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage.

'o

To prevent engine damage when the trimmer is in storage for 30 days or more, follow the steps below:

Let the engine run until it is out of gasoline.

Drain the oil from the warm engine. Fill the engine crankcase with new oil.

Remove the spark plug from the cylinder,

Pour one ounce of oil into the cylinder.

Slowly pull the recoil starter handle so that

the oilwill protect the cylinder. Install a new spark plug in the cylinder.

Clean dirt and debris from the cylinder

cooling fins and the engine housing.

If you do not want to remove gasoline, add a fuel stabilizer, such as Craftsman fuel stabilizer No. 33500, to any gasoline left in the tank.

Craftsman fuel stalibizer will minimize the formation of gum deposits and acids. If the tank is almost empty, mix

Craftsman fuel stabilizer with fresh gaso-

line in a separate container and add the mixture to the tank. Always follow the in- structions on the stabilizer container. Run the engine at least ten minutes after stabi- lizer is added to allow the mixture to reach the carburetor.

Battery

Charge the battery for 16-24 hours before

storage and again before use each season.

712344 20

TROUBLE SHOOTING CHART

CAUSE CORRECTION TROUBLE

Engine does not start Spark plug wire disconnected.

Connectspark plugwire.

Engine not primed.

Defective or incorrectly gapped spark plug.

Fuel tank empty.

Dirty carburetor or fuel line.

Dirty air filter.

Carburetor out of adjustment.

Engine flooded.

: Throttle control laver in incorrect position.

Stale gasoline.

Defective throttle control lever or wire.

Prime engine.

Inspect or replace spark

:)lug.

Add fuel.

Clean carburetor or fuel line.

Replace air filter.

For carburetoradjustment,

take the unitto a Craftsman

Service Center,

Wait several minutasbefore starting.

Aove throttlelever to FAST or START position,

Drain old gasolineand add fresh gasoline.

Inspectlever and wire.

Replace if damaged or dafec[_ve.

Engine runs poorly.

Battery not fully charged.

Wiring harness not connected to battery.

Bad spark plug.

Charge battery 16-24 hours,

Connect wiringharness.

Replacespark plug.

Dirty air filter.

Carburetorout of adjustment.

Replace air filter.

! Adjust carburetor.Take the

unitto a CraftsmanService

Center.

Stale gasoline.

Engine coolingsystem clogged,

Drain old gasoline.Add fresh

,gasoline.

Clean engine screen and coolingfins.

712344 21

Engine overheats.

TROUBLE SHOOTING CHART

Engine cooling system clogged.

Clean debris screen and

engine cooling fins.

Carburetor out of adjustment. Adjust carburetor. Take the

unit to a Craftsman Service

Center.

Add oil.

Engi.newill not stop runn,ng.

Poor trimming performance.

Trimmer vibrates,

Oil level is low.

Defective throttle control lever or wire.

Throttle not adjusted properly.

Trimmer line length is too short.

i Engine not set at FAST speed.

Set screw for trimmer head is loose.

Inspect and replace damaged parts.

Move throttle to the full OFF position.

Correct line length is 21.5

inches. When less than 1/2 this length, replace the line.

Move engine throttle lever to

FAST position.

Tighten set screw with

T-handle wrench.

Trimmer head does not retain line

Trimmer line lengths are substantially different.

Loose nuts or bolts.

Adjust trimmer line to approximately equal lengths.

Check all bolts and nuts, including engine bolts.

Broken trimmer head.

Trimmer line not properly attached.

Replace broken part.

Follow instructions on decal or in the Service section of the owner's manual.

Broken line retainer.

Trimmer line not correctsize.

I Replace trimmer head assembly.

Use Craftsman 0.155 inch diameter trimmer line.

712344 22

•

_= I

-

i""u-._.Q...REE_

SLOPE GUIDE

SIGHT AND HOLD THIS GUIDE LEVEL WITH A VERTICAL

_ i,:

,i

" ...... :............

-:,

TREE, A CORNER OF A STRUCTURE, A POWER LINE

I ..................

J

........

POLE, OR A FENCE.

m°eaeeJ°eeeoo.e.e,

I

I

I

I

Operate a trimmer across the face of slopes, never up or down slopes.

0_ oJ

10 DEGREES

15 DEGREES

_

Use this guide and do not trim on a slope greater than 15 degrees.

A 10 degree slope is a hill that increases

in height

at approximately 1.7 feet in 10 feet..

A 15 degree slope is a hill that increases in height at approximately 2.5 feet in 10 feet..

Use extreme care at all times and avoid sudden turns or maneuvers. Follow other instructions in this anual for safety in trimming on slopes.

Operate a trimmer across the face of slopes, never up or down slopes.

Use extra care when operating on or near slopes and obstructions.

03

F-

CRAFTSMAN 536.773520

14

11

12

10

\

1

REPAIR PARTS

27

\

712344

18 12 20,

27

21

24

30

31

33 34

36

\

37

24

39

CRAFTSMAN 536.773520

4

8

7

8

9

10

11

12

16

17

18

19

13

14

15

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

Key

No.

1

2

3

39

40

41

42

36

37

38

Handle Assy,

Lever, Control

Bolt

Description

Strap, Tie

Washer

Guide, Rope

Cable, Control Latching

Key, Ignition

Cable, Throttle w/ES

Bolt

Screw

Cover, Battery

Harness, Wiring

Battery

Holder, Battery

Case, Battery

Charger, Battery

Knob, Handle

Washer, Spring

PLvot, Handle

Bolt

Handle, Lower

Screw

143.998512, See Engine Pages

Harness Clamp

Nut

Wheel and Tire

Washer

Spacer

Bracket Assembly, Axle and

Bolt, Carriage

Bolt

Nut

Nut

Shield, Trailing

Bolt

Frame

Glasses, Safety

Decal

Spacer, PM .26x.5x.2

Washer, Formed

REPAIR PARTS

Part No.

740198-846

740198-848

323035

712267

17x38 Z

672510

740193

740228

740225

323034

710269

740218

740221

740220

740222

740219

740223

740202

711936

740158

711937

740195-846

710079

ENGINE

740217

710140

740185

710258

740190

740188

711935

48901

710203

710205

740192

710265

740216-848

711890

712030

672292

783000

712344 25

CRAFTSMAN 536.773520

REPAIR PARTS

1

2

3

,8

15

27

\

31

26

\

25..

31

38

2O

23

712344 26

CRAFTSMAN 536.773520

24

25

26

27

20

22

23

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

29

30

31

32

33

36

37

38

Key

No.

1

2

3

4

Description

Nut

Bolt

Frame

Screw

Idler Assembly

Bolt

Spring

Spacer, Jackshaft Housing

Nut

Washer

Pulley, Cutting Head

Spacer

Belt

Pulley, Idler

Pulley, Engine

Pulley, Idler

Lockwasher

Bolt

Screw

Rap, Debris

Guard Assy,

Screw

Jackshaft Housing Assembly

Shaft, Cutting Head

Wrap, Upper Head

Screw

Cutting Disc Assembly

Screw, Set

Une, (Cutting Pack of 24)

Flatwasher

Guide, Height

Lockwasher

Bolt

T-Wrench

REPAIR PARTS

Pa_ No.

710140

711978

740216-848

740244

740179

740183

712147

712146

712145

740167

770070

710269

092574

740246

740163

712126

740175-848

712127

79999

712440

710272

740232

710200

712403

740292

712148

710083

740171

740173

711933

740226

120380

180018

712128

712344 27

CRAFTSMAN 536.773520

5 .......Q

REPAIR PARTS

/

5

3

712344

Key

No.

1

2

3

4

5

6

7 •

8

Description

Engine Debris Support

Screw

Bracket, Right Shield

Bracket, Left Shield

Ratchet Fastener

Shield, Engine Debris

Knob, Debris Shield

Housing, Trimmer

28

Part No.

740234-846

710273

740238

740245

311087

740229

740227

740216-848

CRAFTSMAN 143.996512

370E goo

400

135

416

130

120

119

125

126

REPAIR PARTS

_310

46

"_ _'_

"3O5

• 306

712344

238

245

250

29

CRAFTSMAN 143.996512

1

2

6

KEY PART

NO.

NO.

0

0

37266

26727

33734

DESCRIPTION

RPM High 3450 to 3750

RPM Low 2000 to 2300

Cylinder (IncL 2,20 & 150)

Dowel Pin

Breather Element

40

41

41

42

42

43

45

7

12

12A

19

20

30

40

36557

36775

36558

40027

Breather Ass'y.

(Incl. 6 & 12A)

Breather Tube

Breather Cover & Tube

(Incl. 12B)

Breather Tube Elbow

Washer

12B 36694

14 28277

15

16

17

18

30589 Governor Rod (Incl. 14)

34839A Governor Lever

31335

651018

Governor Lever Clamp

Screw, Torx T-15,

8-32 x 19/64"

37329

32600

Extension Spring

Oil Seal

34570A Crankshaft

46

48

50

40028

40025

40026

40006

40007

20381

36777

32610A

27241

36778

Piston, Pin & Ring Set

(Std.)

Piston, Pin & Ring Set

(.010" OS)

Piston & Pin Ass'y.

(Std.) (Incl. 43)

Piston & Pin Ass'y.

(.010" OS) (Incl. 43)

Ring Set (Std.)

Ring Set (.010" OS)

Piston Pin Retaining Ring

Connecting Rod Ass'y.

(Incl. 46)

Connecting Rod Bolt

Valve Lifter

Camshaft (MCR)

712344 30

REPAIR PARTS

KEY

NO.

52

69

70

72

75

80

81

82

92

93 lOO lOl lO3

83

86

89

90

PART

NO.

29914

35261

34311E

11o

110A tlOC

119

120

125

36230

34970

35020

36787

36825

37288

126

130

135

150

151

151A

36083

27897

30574A

30590A

30591

30588A

650488

610961

611179

850815

650816

34443B

610118

651007

37289

6021A

35395

31672

31673

40017

DESCRIPTION

Oil Pump Ass'y.

Mounting Range Gasket

Mounting Range

(Incl. 72 thru 83,306)

Oil Drain Plug

Oil Seal

Governor Shaft

Washer

Governor Gear Ass'y.

(Incl. 81)

Governor Spool

Screw, 1/4-20 x 1-1/4"

Rywheel Key

Flywheel

Belleville Washer

Flywheel Nut

Solid State Ignition

Spark Plug Cover

Screw, Torx T-15,

10-24 x 15/16"

Ground Wire

Ground Wire

Ground Wire

Cylinder Head Gasket

Cylinder Head

Exhaust Valve (Std.)

(Incl. 151)

Intake Valve (Std.)

(Incl. 151)

Screw, 5/16-18 x 1-1/2"

Resistor Spark Plug

(RJ19LM)

Valve Spring

Valve Spring Cap

Intake Valve Seal

CRAFTSMAN 143.996512

169 36783 Valve Cover Gasket

172

174

178

179

182

36784

30200

29752

30593

6201

Valve Cover

Screw, 10-24 x 9/16"

Nut & Lock Washer,

1/4-28

Retainer Clip

Screw, 1/4-28 x 7/8"

184 26756 Carburetor To Intake Pipe

Gasket

185

186

223

224

238

239

241

245

250

189

200

206

207

209

277

285

287

290

260

261

36980

30200

262 650831

263A 37198

275 36790A

650988

35000A

650926

29774

36785

36255

Intake Pipe

Governor Unk

650831

37134

610973

Screw. 1/4-20 x 1/2"

Control Bracket (Incl. 206)

Terminal

36200A Throttle Link

30200 Screw, 10-24x9/16"

650451

36786

650932

34338

36919

36905

36920

Screw, 1/4-20 x 1"

Intake Pipe Gasket

Screw, 10-32 x 49/64"

Air Cleaner Gasket

Air Cleaner Collar

Air Cleaner Filter

Air Cleaner Cover

Blower Housing

Screw, 10-24

Screw, 1/4-20 x 1/2"

Starter Grill

Muffler

Screw, 1/4-20

Starter Cup x 9/16" x2-9/32"

Screw, 8-32 x 21/64"

Fuel Line

292

298

300

26460

28763

36916

Fuel Une Clamp

Screw, 10-32 x 35/64"

Fuel Tank (Incl. 292 & 301)

301

305

306

307

309

310

313

314

315

322

36246

35647

36996

35499

650562

35648

34080

650767

REPAIR PARTS

Fuel Cap

Oil Fill Tube

"O'-Ring

"O"-Ring

Screw, 10-32 x 3/8"

Dipstick

Spacer

Screw, 8-32 x 27/64"

Alternator Coil

34990

35013 Connector Body

Terminal

324

325

347

33177

37152

651038

370A 36261

370C 37199

Spring Clip

Screw, 10-32 x 27/32"

Lubrication Decal

Primer Decal

Air Cleaner Decal

370E 34387

380

390

640069

590739

Carburetor (Incl, 184)

Rewind Starter

395

400

416

417

900

35707

36792B

36085

650821

0

(NOTE: This engine could

have been built with

590702 starter).

Electric Starter Motor

(12 Volt)

Gasket Set (incl. Items

Marked PK in Notes)

Incl. Part #'s 26756 (1),

28833 (1), 34338 (1),

36783 (1), 36786 (1),

36787 (1), 36832 (1),

36996 (1), 37130 (1).

Spark Arrestor Kit

(Incl. 417) (Optional)

Screw. 10-32 x 1/2"

(Optional)

Replacement Engine

NONE, order from 71-999

900 0

Replacement Short Block

750812B, order from 71-999

712344 31

CRAFTSMAN 143.996512

REPAIR PARTS

712344 32

4O

_m37

(_37

_36

27

CRAFTSMAN 143.996512

KEY

NO.

0

PART

NO.

640069

16

17

18

20

20A

25

27

28

6

7

4

5

1

2

37

40

44

47

48

29

30

31

35

36

60

631807

651025

630768

640027

640053

631867

631024

632019

631615

631767

631184

631183

640070

650506

631028

631021

631022

36045A

632735

632547

840030

27110A

630748

631027

632760

REPAIR PARTS

DESCRiPTiON

Carburetor

(Incl. 184 of Engine Parts !ist

ThrottleShaft & Lever Assembly

Throttle Return Spring

Dust Seal Washer

Dust Seal (Throttle)

ThrottleShutter

Shutter Screw

Fuel Fitting

Throttle Crack Screw / Idle Speed

TensionSpring

Idle RestrictorScrew

Idle RestrictorScrew Cap

Float Bowl

Float Shaft

Float

Float Bowl "O" Ring

Inlet Needle, Seat, & Clip (Incl. 31)

Spring Clip

Primer Bulb/RetainerRing

Main Nozzle Tube

"O" Ring, Main Nozzle Tube

High Speed Bowl Nut

Bowl Nut Washer

Welch Plug, Idle Mixtur# Well

Welch Plug, AtmosphericVent

Repair kit

(Incl. Items Marked PK in Notes)

712344 33

CRAFTSMAN 143.996512

REPAIR PARTS

6

\

8

11c

712344 34

CRAFTSMAN 143.996512

REPAIR PARTS

34949A

34953

33450

34944

34945

590500

34942

PART

NO.

35707

34955

34950

34954

34947

34946

34951

34952

34948

34953

590608

7

8

10A tlC

4A

5B

6

1

2

3

KEY

NO.

0

12

13

14

15

16

17

18

DESCRIPTION

Electric Starter (12 Volt)

Retainer Ring

Spring Retainer

Spring

Gear

Drive End Cap Ass'y,

Lock Nut

Armature

Housing Ass'y.

Thrust Washer

Commutator End Cap Ass'y. (Incl. brushes)

Bolt, 10-32 x 3-3/15"

Pinion Driver

Cup Washer

Retainer Ring

Washer

Drive Nut

Washer

712344 85

CRAFTSMAN 143.996512

V--14

REPAIR PARTS

11

13

12 j I

-7

712344

KEY

NO.

0

11

12

13

14

7

8

3

6

PART

NO.

590739

590740

590616

590517

590618A

590638

590535

59070 t

59O760

Rewind Starter

DESCRIPTION

Retainer

Starter Dog

Dog Spring

Pulley & Rewind Spring As$'y

Starter Housing Ass'y (40 degree grommet)

Starter Rope (Length 98" x 9/64" dia.)

Starter Handle

Spring Clip

36

NOTES

712344 37

For the repair or replacement parts you need delivered directly to your home

Call 7am-7pm,,,7days a week

1-800-366-PART

(1-800-366-7278)

Para ordenar piezas con entrega a domicilio - 1-800-659-7084

For in-house major brand repair service

Call 24 hours a day, 7days a week

1-800-4-REPAIR

(1-800-473-7247)

Para pedir servicio de reparacibn a domicilio1-800-676-5811

For the location of a Sears Parts and

Repair Center in your area

Call 24 hours a day, 7days a week

1-800-488-1222

For information on purchasing a Sears

Maintenance agreement or to inquire about an existing Agreement

Call 9am-5pm, Monday-Saturday

1-800-827-6655

When requesting service or ordering parts, always provide the following information:

• Product Type • Part Number

• Model Number

• Part Description

8B,AR8

|g|ggg

Printed in U.S.A.