MTD 25B-515-799 Owner’s Manual

Operator's Manual

M

4-Cycle

Lawn Edger

Model No. 316,772380

INCREDI.PULL TM

UNBELIEVABLE STARTING E A S E

with MA× FIREx4clI3NITION M

,, SAFETY
* ASSEMBLY
* OPERATION

* MAINTENANCE
* PARTS LIST

CAUTION: Before using this
product, read this manual and

follow all safety rules and

operating instructions.

* ESPANOL, R 13

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

Visit our website: www.craftsman.com

P/N 769=05248 P00 11/09

CALiFORNiAPROPOSiTiON 65 WARNING

THE ENGINE EXHAUST FROM THiS PRODUCT CONTAINS CHEMICALS

KNOWN TO THE STATE OF CALiFORNiA TO CAUSE CANCER, BIRTH

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

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

Optional Equipment ........................................... 9

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

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

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

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

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

Oregon and Washington. All U.S. Forest Land and the state of California (Public
Resources Codes 4442 and 4443), Oregon and Washington require, by law that

certain internal combustion engines operated on forest brush and/or grass-covered
areas be equipped with a spark arrestor, maintained in effective working order, or

the engine be constructed, equipped and maintained for the prevention of fire.
Check with your state or local authorities for regulations pertaining to these

requirements. Failure to follow these requirements could subject you to liability or
a fine. This unit is factory equipped with a spark arrestor. If it requires

replacement, ask your LOCAL SERVICE DEALER to install the Accessory Part
#753=05245 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.

READ ALL iNSTRUCTiONS BEFORE OPERATING

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

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

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

Children and teens under the age of 15 must not use the unit, except for
teens guided by an adult.

All guards and safety attachments must be installed properly before operating
the unit.

Inspect the unit before use. Replace damaged parts. Check for fuel leaks.
Make sure all fasteners are in place and secure. Replace parts that are
cracked, chipped, or damaged inany way. Do not operate the unit with loose

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

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

Clear the area of children, bystanders, and pets. At a minimum, keep all
children, bystanders, and pets outside a 50 feet (15 m.) radius; there still may
be a risk to bystanders from thrown objects. Bystanders should be

encouraged to wear eye protection. Ifapproached, stop the unit immediately.
Squeeze the throttle control and check that it returns automatically to the idle

position. Make all adjustments or repairs before using unit.

SAFETY WARNINGS FOR GAS UNITS

-- i

_ WARNING: Gasoline is highly flammable and its vapors can

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

DEFECTS OR OTHER REPRODUCTIVE HARM.

• iMPORTANT SAFETY iNSTRUCTiONS

followed. Please read these instructions before operating the unit

in order to ensure the safety of the operator and any bystanders.
Please keep these instructions for later use.

explode if ignited. Take the following precautions:

J

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

understanding. The safety warnings do not by themselves eliminate any danger.
The instructions or warnings they give are not substitutes for proper accident

prevention measures.

SYMBOL MEANING

Attention is required in order to avoid serious personal injury.

SAFETY ALERT: Indicates danger, warning or caution.

May be used in conjunction with other symbols or pictographs.

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

DANGER: Failure to obey a safety warning will result in serious

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

injury to yourself and others. Always follow the safety precautions

WARNING: Failure to obey a safety warning can result in

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

_IL CAUTION: Failure to obey a safety warning may result in

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

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

Read the Operator's Manual and foflow 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®.

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

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

• Add fuel in a clean, well-ventilated outdoor area where there are no sparks or
flames. 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.

WHILE OPERATING

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

fumes can kill. Operate this unit only in a well ventilated outdoor area.
Wear safety glasses or goggles that are marked as meeting ANSI Z87.1-1989

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

recommended.

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

This unit has a clutch. The blade remains stationary when the engine is idling.

Ifthey do not, have the unit adjusted by an authorized service technician.
Be sure the blade is not in contact with anything before starting the unit.

Use the unit only in daylight or good artificial light.

Avoid accidental starting. Be in the starting position whenever pulling the
starter rope. The operator and unit must be in a stable position while starting.

See Starting/Stopping Instructions.

Use the right tool. Only use this tool for the purpose intended.
Use extreme caution when reversing or pulling the unit backwards.
Do not overreach. Always keep proper footing and balance. Take extra care

when working with on steep slopes or inclines.

property damage or personal injury to yourself or to others.

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

maintenance of the equipment.

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 9 of this manual for more information
about purchasing these accessories.)

* Always hold the unit with both hands when operating. Keep afirm grip on the

handle.

* Keep hands, face, and feet at a distance from all moving parts. Do not touch

or try to stop the blade while it is rotating.

* Do not touch the engine or muffler. These parts get extremely hot from

operation. They remain hot for a short time after turning off the unit.

* Do not operate the engine faster than the speed needed for the job. Do not

run the engine at high speed when the unit is not in use.

* Always stop the engine when work is delayed or when walking from one

location to another.

* If striking or becomes entangled with a foreign object, stop the engine

immediately and check for damage. Do not operate before repairing damage.
Do not operate the unit with loose or damaged parts.

* Stop and switch the engine to offfor maintenance or repair.
* Use only original equipment manufacturer replacement parts and accessories

for this unit. These are available from an authorized service dealer. The use of
any unauthorized parts or accessories could lead to serious injury to the user,

or damage to the unit, and void the warranty.

* Keep unit clean of vegetation and other materials that may become lodged or

entangled in the unit.

* To reduce fire hazard, keep the engine and muffler free from grass, leaves,

excessive grease or carbon build up.

After use

* Clean the unit with household cleaner to remove any gum buildup. Oi the

bade with mach ne oil to prevent rust.

OTHER SAFETY WARNINGS

* Never store a fueled unit inside a building where fumes may reach an open

flame or spark.

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

unit while transporting.

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

or damage. Keep out of the reach of children.

* Never douse or squirt the unit with water or any other liquid. Keep handles dry,

clean and free from debris. Clean after each use. See the Cleaning and
Storage instructions.

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

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

SAVE THESE INSTRUCTIONS

,, 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 SYMBOL MEANING

3

CRAFTSMAN FULL WARRANTY

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

This warranty applies for only 90 days 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, air cleaner or spark plug.
Repairs necessary because of accident or failure to operate or maintain the product according to all supplied instructions.

Preventive maintenance, or repairs necesary 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

Edging along paths, driveways, rockeries, etc.

Handme Bairn Lock

Throttle Contol

Oil Fill Plug

Fuel Cap

Starter Rope

On/Off Control

HANDLE ASSEMBLY II Middle Handle

1. Remove the nuts and bolts

from the handle
components. Be sure that

they return to the holes they 4.
came out of. [_ Lock-Nuts

straight middle shaft over the
lower shaft on the unit and

align the holes (Fig. 1). Make

2. Place the 2-holed end of the _=_ :_

sure the "TO START" label is Lower Handle
facing up. Fig. 1

3.

Insert the 2 flange-head bolts
(1/4" x 1-1/4") into these holes (Fig. 1).

4. Install the lock-nuts onto these bolts until finger tight.

5. Using a 3/8" wrench, hold each flange-head bolt and tighten the lock-

nuts with a 7/16" wrench until firm. DO NOT OVERTIGHTEN.

U

Grip

Edger Blade Blade

Bolt

Air Filter

Cover

Muffler Spark Plug

Depth Adjustment

Lever

Shield

6. Place the upper shaft of the
control handle onto the 3-holed

end of the straight middle shaft
and align the control handle's

holes with the two end-holes of
the straight metal shaft (Fig. 2).

NOTE: The On/Off control

cables are pre-installed,
care must be taken

when installing the
control handle as to not

pinch or bend them.
This can damage the

cables and cause them to not function properly.

7. Insert two flange-head bolts (1/4" x 1-1/4") into these holes (Fig. 2).

8. Hand-start the lock-nuts onto these bolts.

Upper Handle_ Bolt

Fig. 2

Bulb

9. Usinga3/8"wrench,hold

Starter Rope

eachflange-headboltand
tightenthelock-nutswitha

7/16"wrenchuntilfirm.DO

Grip

NOTOVERTIGHTEN.

10.Pulloutthestarterropeand
runitintotheeyehook(Fig.3).

11.Inserttheeyehookintothe

_/_ Starter

remainingholeonthe
straightmetalshaft(Fig.3).

12.Screwthenutontotheeye
hook(Fig3)andusea7/16"

wrenchtotighten.DONOT

OVERTIGHTEN.

13.Usingtheziptiesinthe

Fig.3

Zip Tie

Z-Hook

hardwarebag,securethe
handlecablestothestraight

metal shaft mid-way between
the eye hook and the motor

housing.

NOTE: DO NOT run any control

14. Cut the Zip tie holding the

15. Insert the Z-Hook into the

16. Remove the nut and bolt

17. Align the throttle control with

18. Insert the bolt through the hole in the throttle control and the hole in the

19. Hand-start the lock-nut onto this bolt.

20. Using a 7/16" wrench, tighten each nut onto each bolt until firm. DO

wires though the eye
hook.

bail to the handle (Fig. 4).

hole on the right side of the
bail to secure the clutch

cable to the bail (Fig. 4).

from the throttle control
(Fig. 5).

the hole on the right side of
the handle (Fig. 5).

handle.

NOT OVERTIGHTEN.

\

Bail

Fig. 4

Throttle Control

Bolt

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

NOTE: Never add oil to the fuel

5. Wipe up any oil that may

Check oil before each use and

change as needed. Refer to

Checking the Oil Level.
RECOMMENDED FUEL TYPE oil Fill Hole

Old fuel is the primary reason for Fig. 7

improper unit performance. Be

sure to use fresh, clean, unleaded oil Fill Plug
gasoline. _"

NOTE: Dispose of the old

NOTE: This is a four cycle

Definition of Blended Fuels Fig. 8

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 60 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

or fuel tank.

have spilled and reinstall the

oil fill plug.

gasoline in accordance
to Federal, State and

Local regulations. O-Ring

engine. In order to avoid
damage to the unit, do oil Fill

not mix oil with Hole

gasoline.

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

_[ ARNING: 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 3.04
fluid oz. (90 ml.) bottle of SAE 30

SF, SG, SH oil (Fig. 4).
NOTE: Save the bottle of oil. It

1. Unscrew the top of the bottle of oil and remove the paper seal covering

2. Place unit on a flat, level surface.

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

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.

Fig. 6

can be used to measure the correct amount during future oil
changes. See Changing the Oil.

the opening. Replace the top. Next, cut the tip off the funnel spout (Fig. 6).

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 a fuel 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

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

_L_ WARNING: DO NOT USE E85 FUEL IN THIS UNIT. It has

1. Remove the fuel cap (Fig. 9). Gas Can Spout

2. Place the gas container's

NOTE: Do not overfill the tank.

3. Wipe up any gasoline that

4. Reinstall the fuel cap. O

5. Move the unit at least 30 ft. Fuel Tank

5

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

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

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

tank.

may have spilled.

(9.1 m) from the fueling Fig. 9

source and site before
starting the engine.

m

i iwA°.,°oo0eratethisunitonyinaweventiatedoutdoorarea

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

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

1. Check the oil level in the Control

STARTING INSTRUCTIONS F__Throttle

2. Fill the fuel tank with fresh, _

NOTE: There is no need to turn

IF COLD... For cold weather

3. Fully press and release the

4. Stand in the starting position

5. Pull the starter rope in a

NOTE: DO NOT engage the bail _ _ _ o

IF COLD... For cold weather conditions (below 40°F), flip the Cold Weather

6. Wait 60 seconds and then move the throttle control to the FAST (_)

IF... The engine does not start, go back to step 3.
IF... The engine stops while squeezing the throttle, go back to step 4.

STOPPING INSTRUCTIONS

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

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

Carbon monox de exhaust fumes can be ethan a conf ned area.

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, j

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.

crankcase. Refer to
Checking the Oil Level.

Refer to Fueling the Unit. Slow _,
clean unleaded gasoline. _---

the unit on. The On/Off

Control is in the ON (1} On/Off _'_k--'_
position at all times Control

(Fig. 10). Fig. 10

conditions (below 40°F), Cold Weather Primer Bulb
flip the Cold Weather Start Starter Lever

closed position and
continue to step 3. DO

NOT flip this lever back if

the temperature is above
40°E

Lever (Fig. 11) back to the _

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

be visible in the primer bulb
(Fig. 11). If fuel can not be Fig. 11

seen in the bulb, press and Starting
release the bulb until fuel is Position

visible.

(Fig. 12) and make sure the
throttle control (Fig. 10) is in Starter

the SLOW (_) position. Rope

controlled motion 3 to 5
times or until unit starts.

while pulling the starter
rope (Fig. 12) or the unit Fig. 12
will not start.

Start Lever forward to the open position after the unit has started
and before increasing the throttle.

position and allow the engine to warm up for 30 to 60 seconds. The unit
may be used during this time.

comes to a complete stop. (Fig. 10)

\

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. Fillthe fuel tank with fresh, clean unleaded gasoline. Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off Control is in the

IF COLD... For cold weather conditions (below 40°F), flip the Cold Weather

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

4. Make sure the throttle control (Fig. 11) is in the SLOW (_) position.

5. Place the electric starter or power start bit into the back of the unit.

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

NOTE: DO NOT engage the bail while starting the unit (Fig. 12) or the unit

IF COLD... For cold weather conditions (below 40°F), flip the Cold Weather

6. Once the unit is started, remove the electric starter or drill and wait 60

7. From the operator's position, move the throttle control to the FAST (_')

IF,.. The engine does not start, go back to step 3.
IF,.. The engine stops while squeezing the throttle, go back to step 4.
STOPPING INSTRUCTIONS

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

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

HOLDING THE UNIT

-- i

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

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

following:

• The operator is wearing eye protection and

ADJUSTING EDGER CUTTING DEPTH

1. Grasp the depth adjustment lever

2. To raise the cutting blade, \\_

3. To lower the cutting blade, _ ,d_.

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 9 of this manual for more information
about purchasing these accessories.)

ON (I) position at all times (Fig. 10).

Start Lever (Fig. 9) down to the start/closed position and continue to
step 3. DO NOT flip this lever down if the temperature is above 40°R

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

Refer to the Operation section of the Electric Starter or Power Start Bit

operator's manual.

intervals until unit starts.

will not start.

Start Lever forward to the open position after the unit has started
and before squeezing the throttle control.

seconds.

position and allow the engine to warm up for 30 to 60 seconds (Fig. 10).
The unit may be used during this time.

comes to a complete stop. (Fig. 10)

to reduce the risk of injury when operating this unit.

proper clothing.
Both hands are holding the handle bar

firmly.
The edger wheel adjusted for proper cut

depth as shown in Figure 14 and edger
positioned as shown in Figure 13.

located beside the front
wheel (Fig 14). L_

move the lever toward the
front of the wheel bracket _X_/" _
(Fig. 14). Lowering the wheel b-_\\\\_-_

decreases the cutting depth.._9).._L
move the lever toward the

rear of the wheel bracket.
Raising the wheel increases

the cutting depth.

_ T[lurnb Wheel Ju_tvPe_mhrent

Wheel Bracket

Fig. 14

Fig. 13

TIPS FOR BEST EDGING RESULTS

• Do not force the edger. Edge
the first time at a lesser

depth,(No more than 1/2" depth
cut per pass), then do the area

again with a deeper setting.

• Walk the edger at a slow, even
pace.
Check the blade condition. As
it wears it becomes smaller,
thus reducing the cutting depth
performance. Replace with a

new blade when the blade has
worn to the blade's wear limit

holes (Fig. 15).

ADJUST BELT TENSION
If blade fails to turn when the bail is pulled, then:

1.

Locate small thumb wheel on top of the belt housing (Fig. 14).

2.

Turn the wheel clockwise 1 revolution to increase the tension on the belt.

3.

Try pulling the bail and see if the blade turns. If not, repeat step 2 until
the blade turns.

MAINTENANCE SCHEDULE

BLADE EDGE

Wear Limit Holes

Fig. 15

I ,tk I WARNING: To prevent serious injury, never perform maintenance

-- ]

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

NOTE: Some maintenance procedures may require special tools or skills. If

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

FREQUENCY MAINTENANCE REQUIRED SEE
Every 10 hours Clean air filter p. 8

At 10 hours Change oil p. 7

Every 40 Change oil p. 7

BLADE REPLACEMENT Spindle

1. Place the 5/16" Allen wrench

2. While holding the Allen

3. Remove the nut and blade.

4. Install the new blade and nut

5. While holding the Allen

NOTE: Make sure that the blade

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

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

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

Check rocker arm to valve clearance and adjust p. 8
Check spark plug condition and gap p. 9

Check rocker arm to valve clearance and adjust p. 8
Check spark plug condition and gap p. 9

Clean spark arrestor p. 9

in the spindle hole (Fig. 16).

wrench in place, loosen the
nut with a 15/16" wrench by

turning it counterclockwise

(Fig. 16).

Keep the nut for new blade
installation. Fig. 16

(Fig. 17).

wrench in the spindle hole,

tighten the nut by turning the

wrench clockwise until tight
(Fig. 16).

stays flat and centered
against the output shaft

throughout installation.

Edger Blade

Fig. 17

CHECKING THE OiL LEVEL

_lb[_ ARNING: Toavoid serious personal injury, always turn the

maintaining the proper oil level in

the crankcase cannot be
overemphasized. Check oil before

each use:

heochec

1. Stop the engine and allow oil

2. Place unit on a flat, level oil Max Fill Line

3. Keep dirt, grass clippings

4. Remove the oil fill plug.

5. Look into the oil fill hole, use

6. Ifthe oil level is not touching Oil Fifl

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

CHANGING THE OIL

-- i

_[_ CAUTION: Wear gloves to prevent injury when handling the unit.

For a new engine, change the oil

after the first 10 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

3. Wipe up any oil residue on

4. Refill the crankcase with

NOTE: Use the bottle and

5.

6.

unit off and allow it to cool before cleaning or maintaining it.

to drain into the crankcase. --

surface.

and other debris out of the Fig. 18
engine. Clean the area

around the dipstick before oil Fill Plug

removing it.

a flashlight if needed. The oil
should be just touching the O-Ring

inner most thread (Fig. 18).

the inner most thread on the Hole
oil fill hole, add a small
amount of oil to the oil fill hole

and recheck (Fig. 21). Repeat Fig. 19
this procedure until the oil level reaches the inner most thread on the oil fill

hole.

and changing the oil (Fig. 19).

hole and into a container by

tipping the unit to a vertical

position (Fig. 20). Allow

ample time for complete
drainage.

the unit and clean up any oil
that may have spilled.

Dispose of the oil according

to Federal, State and local

regulations.

3.04 fl.oz. (90 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 fl.oz.

(90 ml) (Fig. 22). Check
the level, See Checking

the Oil Level. If the level
is low, add a small

amount of oil and recheck. Do not overfill (Fig. 18).
Replace the oil fill plug.
Reconnect the spark plug boot.

Fill Line __._

Fig. 20

Fig. 21

A

p--q

Fig. 22

AiR FILTER MAINTENANCE

-- j_L_ ARNING: To avoid serious personal injury, always turn the

Cleaning the Air Filter Air Filter Cover Slot
Clean and re-oil 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. Tab Hooks Air Filter

1. Open the air filter cover. Push

2. Remove the air filter (Fig. 23).

3. Wash the filter in detergent

4. Apply enough clean SAE 30

5. Squeeze the filter to spread

6. Replace the filter (Fig. 23).
NOTE: Operating the unit

7. Reinstall the air filter cover.

8. Push the cover in until the tab

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. 27). Fig. 26

NOTE: Careless adjustments can seriously damage the unit. Aside from

First, Check Fuel
Old fuel is usually the reason for improper unit performance. 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
carburetor. Check the condition of the air filter before adjusting the idle

speed screw. Refer to Air Filter Maintenance.
Third, Adjust Idle Speed Screw

If, after checking the fuel and IdleAdjustment
cleaning the air filter, the engine Screw
still will not idle, adjust the idle

speed screw as follows:

1. Start the engine and let it run

2. Release the throttle trigger

unit off and allow it to cool before cleaning or maintaining it.

the tab on the left side of the Fig. 23

cover in, swing the air filter
cover out, and off the air filter

housing (Fig. 23).

U

and water (Fig. 24). Rinse the
filter thoroughly and allow it
to dry.

motor oil to lightly coat the
filter (Fig. 25). Fig. 24

and remove excess oil (Fig. 26).

without the air filter, will

VOID the warranty.

Position the tabs on the

sides of the air filter cover

onto the slots at the top of Fig. 25

the back plate (Fig. 23).

on the air filter backplate

snaps into place in the slot on

the air filter cover (Fig. 23).

idle speed, only a Sears or other qualified service dealer should
make carburetor adjustments.

adjustments. Wear protective clothing and observe all safety

instructions to prevent serious personal injury.

at a high idle for a minute to

warm up. Refer to

Starting/Stopping

Instructions.

and let the engine idle. If the Fig. 27

engine stops, insert a small phillips in between the Air Filter Cover and

the Engine Cover (Fig. 27). Turn the idle speed screw in, clockwise, 1/8

of a turn at a time (as needed) until the engine idles smoothly.

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

3. If the cutting attachment rotates when the engine idles, turn the idle
speed screw counterclockwise 1/8 of a turn at a time (as needed), to

reduce idle speed.

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
the engine hesitates or stalls on acceleration

there is a loss of engine power

ROCKER ARM CLEARANCE

m

_ ARNING: To avoid serious personal injury, always turn the

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

NOTE: Inspect the valve to rocker arm clearance with a feeler gauge after

1. Remove the six (6) screws on

2. Disconnect the spark plug wire.

3. Clean dirt from around the

4. Remove the engine cover

5. Clean dirt from around the

6. Pull the starter rope slowly to Arms

If these statements are not true, 0.003-0.006 i

repeat step 6. (0.076-0.152 ram)

7. Slide the feeler gauge between

The recommended clearance for both intake and exhaust is .003 - .006 in.
(.076 - 0.152 rnrn). Use a standard automotive .005 in. (0.127 mm) feeler
gauge. The feeler gauge should slide between the rocker arm and valve stem
with a slight amount of resistance, without binding. See Figures 30 and 31.

8. If the clearance is not within specification:
a. Turn the adjusting nut using a 5/16 inch (8 mm) wrench or nut driver

b. Recheck both clearances, and adjust as necessary.

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

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

11. Replace the spark plug wire.

unit off and allow it to cool before cleaning or maintaining it.

the first 10 hours of View of the Rear Engine Cover
operation and every 40

hours of operation.

The engine must be cold when
checking or adjusting the valve Screws

clearance.
This task should be performed

inside, in a clean, dust free area.

the back of the engine cover
with a Flat-head or T-25 Torx

screwdriver (Fig. 28).

Rocker Arm

Spark Plug

Hole

Rocker

Cover

Fig. 29

Adjusting Nuts

INTAKE

EXHAUST

Fig. 30

Rocker Arm

n._o Gauge

spark plug. Remove the spark
plug from the cylinder head by

turning a 5/8 in. socket
counterclockwise.

(Fig. 28).

rocker arm cover. Remove the
screw holding the rocker arm

cover with a large flat blade
screwdriver or Torx T-25 bit

(Fig. 29). Remove the rocker
arm cover and gasket.

bring the piston to the top of
its travel, (known as top dead

center). Check that:

• The piston isat the top of its
travel. This should be done by Exhaust

looking into the spark plug hole. Adjusting ____ /
(Fig. 30) Nut _ -- Feeler

and both valves are closed

Both rocker arms move freely, L.

the rocker arm and the valve
return spring. Measure the Fig.31

clearance between the valve
stem and rocker arm (Fig. 31). Measure both the intake and exhaust valves.

(Fig. 31).
To increase clearance, turn the adjusting nut counterclockwise.
To decrease clearance, turn the adjusting nut clockwise.

20-30 inolb (2.2-3.4 Norn).

Screws

12.Reinstalltheenginecover.Checkalignmentofthecoverbeforetightening
thescrews.Tightenscrews.

REPLACINGTHESPARKPLUG
UseareplacementChampion®#RDZ4Nsparkplug.Thecorrectairgap

is0.025in.{0.635 rnrn). Remove the plug after every 40 hours of operation

and check its condition.

1. Stop the engine and allow it to cool. Remove the six (6)screws on the back
of the engine cover with a Flat-head or T-25 Torx screwdriver (Fig. 28).

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

A I WARNING: Do not sand blast, scrape or clean spark plug

-- ]

3. Clean dirt from around the

4. Replace cracked, fouled or

5. Install a correctly-gapped

If using a torque wrench torque to: 110=120 in.olb. (12.3=13.5 Norn)
Do not over=tighten.

SPARK ARRESTOR MAINTENANCE

1. Remove the rear engine cover. See Rocker Arm Clearance.

2. With a flat blade screwdriver or Torx T-20 bit and a T-25 bit, remove the

3. Pull the tab on the spark Muffler Spark Arrestor

4. Remove the spark arrestor T-25

5. Clean the spark arrestor _ _"

6. Reinstall the spark arrestor Fig. 33

CLEANING

e ectrodes. Gr t n

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. 32).

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

clockwise until snug.

screws attaching the spark arrestor cover to the muffler (Fig. 33).

arrestor cover out of the Screen
arrestor cover. Cover

screen from the spark JZ Screw
arrestor cover.

muffler. Remove the spark _ [_ _ /
screen with a wire brush or

replace it. Slot 1"-20Screw _

screen, spark arrestor cover
and screws.

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

-- i

Use a small brush to clean off the outside of the unit. Do not use strong
detergents. Household cleaners that contain aromatic oils such as pine and

lemon, and solvents such as kerosene, can damage plastic housing or handle.
Wipe off any moisture with a soft cloth.
STORAGE

unit off and allow it to cool before cleaning or maintaining it.

Never store the unit with fuel in the tank where fumes may reach an open
flame or spark.

Allow the engine to cool before storing.
Lock up the unit to prevent unauthorized use or damage.
Store the unit in a dry, well-ventilated area.

Store the unit out of the reach of children.

the

engine could damage the cylinder.

0.025 in. J_

(0.635ram) t

Fig. 32

LONG TERM STORAGE

1. Drain all gasoline from the gas tank into a container. Do not use gas
that has been stored for more than 60 days. Dispose of the old gasoline

in accordance to Federal, State, and Local regulations.

2. Start the engine and allow it to run until it stalls. This ensures that all
gasoline has been drained from the carburetor.

3. Allow the engine to cool. Remove the spark plug and put 5 drops of

high quality motor oil into the cylinder. Pull the starter rope slowly to

distribute the oil. Reinstall the spark plug.

NOTE: Remove the spark plug and drain all of the oil from the cylinder

before attempting to start the trimmer after storage.

4. Change the oil, referring to Changing the Oil. Dispose of the old oil in
accordance to Federal, State and Local regulations.

5. Thoroughly clean the unit and inspect for any loose or damaged parts.
Repair or replace damaged parts and tighten loose screws, nuts or

bolts. The unit is ready for storage.

TRANSPORTING

Allow the engine to cool before transporting.
Secure the unit while transporting.

Drain the gas tank before transporting.

Tighten gas cap before transporting.

PLUG-IN POWER START AND POWER BIT START FEATURES

This unit is designed to be started with an optional Plug-In Power Start or

Power Bit Start that are sold separately. If choosing to start the unit using

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

also go to www.craftsrnan.com.

Electric Start Feature

item No. Description

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

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

9

PROBLEM

SOLUTION

Empty fuel tank
Pdmer bulb wasr,t Piessed enough

Old fuel
Fou ed spark pug Rep ace or c ean the spark pug

Plugged spark arrestor

Air filter is plugged
Old fuei

Improper idle speed

Old fuel

Improper carburetor adjustment

Blade bound with dirt or grass
Dirty air filter

Plugged spark arrestor

Fill fuel tank with fuel
Press primer bulb fully and Slowly i0 times

Drain gas tank and add fresh fuel

H

Clean or replace spark arrestor

Replace or clean the air filter

Drain gas tank and add fiesh

Adjust according to the Idle Speed Adjustments section.

Drain gas tank and add fresh fuel

Take to sears or other qualified Service dea!ei f0r an adjustment

Stop the engine and clean the blade
Clean or replace the air filter

Clean or replace spark arrestor

I

Old fuel
Impropei carburetor adjustment Take to sears oi other qualified Seivice dealei for an adjustment

Fouled spark plug Replace or clean the spark plug

Drain gas tank and add fresh fuel

Pluggedsparkarrestor ' Cleanorreplacesparkarrestor

iiii_....

10