Craftsman 316.79192 User Manual
Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.sears.com/craftsman
CAUTION: Before using
this product, read this
manual and follow all
safety rules and operating
instructions.
Operator’s Manual
2-Cycle
2-in-1 PLUS TRIMMER / BLOWER
GAS WEEDWACKER
®
Model No. 316.791920
with
• SAFETY
• ASSEMBLY
• OPERATION
• MAINTENANCE
• PARTS LIST
• ESPAÑOL, P. 15
769-01969
®
2
• IMPORTANT SAFETY INSTRUCTIONS •
READ ALL INSTRUCTIONS BEFORE OPERATING
• Read the instructions carefully. Be familiar with the controls
and proper use of the unit.
• Do not operate this unit when tired, ill or under the influence of
alcohol, drugs or medication.
• Children must not operate the unit. Teens must be
accompanied and guided by an adult.
• Inspect the unit before use. Replace damaged parts. Check
for fuel leaks. Make sure all fasteners are in place and secure.
Replace cutting attachment parts that are cracked, chipped or
damaged in any way.
• Use only Hassle Free IV™ XTRA QUIET Spiral Line. Never use
metal-reinforced line, wire, chain or rope. These can break off
and become dangerous projectiles.
• Be aware of risk of injury to the head, hands and feet.
• Clear the area to be cut before each use. Remove rocks,
broken glass, nails, wire, string and other objects which may be
thrown or become entangled in the cutting attachment. Clear
the area of children, bystanders and pets; keep them outside a
50-foot (15 m) radius, at a minimum. Even then, they are still at
risk from thrown objects. Encourage bystanders to wear eye
protection. If you are approached, stop the unit immediately.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments or
repairs before using the unit.
FUEL SAFETY WARNINGS
• Store fuel only in containers specifically designed and
approved for the storage of such materials.
• Always stop the engine and allow it to cool before filling the
fuel tank. Never remove the fuel tank cap or add fuel when the
engine is hot. Never operate the unit without the fuel cap
securely in place.
• Loosen the fuel tank cap slowly to relieve any pressure in the tank.
• Mix and add fuel in a clean, well-ventilated outdoor area where
there are no sparks or flames. Remove the fuel cap slowly, and
only after the engine stops. Do not smoke while fueling or
mixing fuel. Wipe up any spilled fuel from the unit immediately.
• Avoid creating a source of ignition for spilled fuel. Do not
start the engine until fuel vapors dissipate.
• Move the unit at least 30 feet (9.1 m) from the fueling source
and site before starting the engine. Do not smoke. Keep
sparks and open flames away from the area while adding
fuel or operating the unit.
WHILE OPERATING
• Never start or run the unit inside a closed room or building.
Breathing exhaust fumes can be fatal. Operate this unit only
in a well-ventilated outdoor area.
• Wear safety glasses or goggles that meet ANSI Z87.1
standards and are marked as such. Wear ear/hearing
protection when operating this unit. Wear a face or dust
mask if the operation is dusty.
• Wear heavy long pants, boots, gloves and a long sleeve
shirt. Do not wear loose clothing, jewelry, short pants,
sandals or go barefoot. Secure hair above shoulder level.
• The cutting attachment shield must always be in place while
operating the unit. Do not operate unit without both trimming
lines extended, and the proper line installed. Do not extend
the trimming line beyond the length of the shield.
• This unit has a clutch. The cutting attachment remains
stationary when the engine is idling. If it does not, take the unit
to a Sears or other qualified service dealer for an adjustment.
• Adjust the D-handle to your size in order to provide the best
grip.
• Be sure the cutting attachment is not in contact with
anything before starting the unit.
WARNING:
Gasoline is highly flammable and its
vapors can explode if ignited. Take the following
precautions:
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 a Sears or other qualified service dealer to
install the Accessory Part #753-05169 Spark Arrestor Kit.
All information, illustrations, and specifications in this manual
are based on the latest product information available at the
time of printing. We reserve the right to make changes at any
time without notice.
TABLE OF CONTENTS
Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
CARB / EPA Warranty Information . . . . . . . . . . . . . . . . . .4
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . .6
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Maintenance and Repair Instructions . . . . . . . . . . . . . . . .9
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Repair Protection Agreement . . . . . . . . . . . . . . . . . . . . .12
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Service Numbers . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
CALIFORNIA PROPOSITION 65 WARNING
WARNING
THE ENGINE EXHAUST FROM THIS PRODUCT
CONTAINS CHEMICALS KNOWN TO THE STATE OF
CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS
OR OTHER REPRODUCTIVE HARM.
WARNING:
When using the unit, you must follow
the safety rules. Please read these instructions
before operating the unit in order to ensure the safety
of the operator and any bystanders. Please keep
these instructions for later use.
RULES FOR SAFE OPERATION
3
RULES FOR SAFE OPERATION
• Use the unit only in daylight or good artificial light.
• Avoid accidental starting. Be in the starting position
whenever pulling the starter rope. The operator and unit must
be in a stable position while starting. Refer to
Starting/Stopping Instructions (p. 6).
• Use the right tool. Only use this tool for its intended purpose.
• Always hold the unit with both hands when operating. Keep a
firm grip on both handles or grips.
• Keep hands, face, and feet away from all moving parts. Do not
touch or try to stop the cutting attachment when it rotates.
• Do not touch the engine, gear housing or muffler. These parts get
extremely hot from operation, even after the unit is turned off.
• Do not operate the engine faster than the speed needed to
cut or trim. Do not run the engine at high speed when not
cutting.
• Always stop the engine when cutting is delayed or when
walking from one cutting location to another.
• If you strike or become entangled with a foreign object, stop the
engine immediately and check for damage. Do not operate
before repairing damage. Do not operate the unit with loose or
damaged parts.
• Turn the engine to off and disconnect the spark plug for
maintenance or repair.
• Use only replacement parts or accessories recommended for
this tool that are sold by Sears or a Craftsman outlet. Use of
any replacement parts or accessories purchased elsewhere
may be hazardous, and will also void your warranty.
• Keep unit clean of vegetation and other materials. They may
become lodged between the cutting attachment and shield.
• To reduce fire hazard, replace a faulty muffler and spark
arrestor. Keep the engine and muffler free from grass, leaves,
excessive grease or carbon build up.
OTHER SAFETY WARNINGS
• Never store the unit with fuel in the tank, inside a building
where fumes may reach an open flame (pilot lights, etc.) or
sparks (switches, electrical motors, etc.).
• Allow the engine to cool before storing or transporting. Be
sure to secure the unit while transporting.
• Store the unit in a dry place, secured or at a height to prevent
unauthorized use or damage. Keep out of the reach of children.
• Never douse or squirt the unit with water or any other liquid.
Keep handles dry, clean and free from debris. Clean after
each use, see Cleaning and Storage instructions (p. 10).
• Keep these instructions. Refer to them often and use them to
instruct other users. If you loan this unit to others, also loan
them these instructions.
SAVE THESE INSTRUCTIONS
This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the
operator's manual for complete safety, assembly, operating and maintenance and repair information.
SYMBOL MEANING
• ON/OFF STOP CONTROL
ON / START / RUN
• WARNING - READ OPERATOR'S MANUAL
Read the operator’s manual(s) and follow all warnings
and safety instructions. Failure to do so can result in
serious injury to the operator and/or bystanders.
• ON/OFF STOP CONTROL
OFF or STOP
SYMBOL MEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May be used
in conjunction with other symbols or pictographs.
• WEAR EYE AND HEARING PROTECTION
WARNING: Thrown objects and loud noise can
cause severe eye injury and hearing loss. Wear
eye protection meeting ANSI Z87.1 standards
and ear protection when operating this unit. Use
a full face shield when needed.
• KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders, especially
children and pets, at least 50 feet (15 m) from
the operating area.
• THROWN OBJECTS AND ROTATING
CUTTER CAN CAUSE SEVERE INJURY
WARNING: Do not operate without the cutting
attach-ment shield in place. Keep away from the
rotating cutting attachment.
• HOT SURFACE WARNING
Do not touch a hot muffler, gear housing or
cylinder. You may get burned. These parts get
extremely hot from operation. They remain hot for
a short time after the unit is turned off.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel
• OIL
Refer to operator’s manual for the proper type of oil.
• SAFETY & INTERNATIONAL SYMBOLS •
• BLOWERS
WARNING: Rotating impeller blades can cause
severe injury.
Stop the engine and allow the impeller to stop
before cleaning or performing any maintenance.
• SHARP BLADE
WARNING: Sharp blade on cutting attachment
shield. To prevent serious injury, do not touch
the line cutting blade.
4
TWO YEAR FULL WARRANTY ON CRAFTSMAN GAS TRIMMER
When used and maintained according to the operator’s manual, if this gas trimmer fails due to a defect in material or workmanship
within two years from the date of purchase, return it to any Sears store, other Craftsman outlet, or Sears Parts & Repair Center for free
repair (or replacement if repair proves impossible). This warranty excludes cutting line, spark plug and air filter, which are expendable
parts that can wear out from normal use in less than two years. This warranty applies for only 30 days from the date of purchase if
this gas trimmer is used for commercial or rental purposes. 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
California / EPA Emission Control Warranty Statement
Your Warranty Rights and Obligations
The California Air Resources Board, The Environmental Protection Agency, and Sears, Roebuck and Co., are pleased to explain the
emission control system warranty on your 2005 and later small off-road engine. New small off-road engines must be designed, built and
equipped to meet stringent anti-smog standards. Sears, Roebuck and Co. must warrant the emission control system on your small offroad engine for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your small offroad engine.
Your Emission control system may include parts such as the carburetor or fuel-injection system, the ignition system, and catalytic
converter. Also included may be hoses, belts, connectors and other emission-related assemblies.
Where a warrantable condition exists, Sears will repair your small off-road engine at no cost to you including diagnosis, parts and
labor.
The 2005 and later small off-road engines are warranted for two years. If any emission-related part on your engine is
defective, the part will be repaired or replaced by Sears.
Owner’s Warranty Responsibilities
• As the small off-road engine owner, you are responsible for the performance of the required maintenance listed in your operator’s
manual. Sears recommends that you retain all receipts covering maintenance on your small off-road engine, but Sears cannot deny
warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance.
• As the small off-road engine owner, you should however be aware that Sears may deny you warranty coverage if your small off-road
engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
• You are responsible for presenting your small off-road engine to a Sears authorized service center as soon as problem exists. The
warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should call 1-800-4-MY-HOME
®
.
Manufacturer’s Warranty Coverage
• The warranty period begins on the date the engine or equipment is delivered to the retail purchaser.
• The manufacturer warrants to the initial owner and each subsequent purchaser, that the engine is free from defects in material and
workmanship which cause the failure of a warranted part for a period of two years.
• Repair and replacement of warranted part will be performed at no charge to the owner at an authorized Sears service center. For
the nearest location please contact Sears at: 1-800-4-MY-HOME
®
.
• Any warranted part which is not scheduled for replacement, as required maintenance or which is scheduled only for regular
inspection to the effect of “Repair or Replace as Necessary” is warranted for the period. Any warranted part which is scheduled for
replacement as required maintenance will be warranted for the period of time up to the first scheduled replacement point for that
part.
• The owner will not be charged for diagnostic labor which leads to the determination that a warranted part is defective if the
diagnostic work is performed at an authorized Sears Service Center.
• The manufacturer is liable for damages to other engine components caused by the failure of a warranted part still under warranty.
• Failures caused by abuse, neglect or improper maintenance are not covered under warranty.
• The use of add-on or modified parts can be grounds for disallowing a warranty claim. The manufacturer is not liable to cover failures
of warranted parts caused by the use of add-on or modified parts.
• In order to file a claim, go to your nearest authorized Sears Service Center. Warranty service or repairs will be provided at all
authorized Sears Service Centers.
• Any manufacturer approved replacement part may be used in the performance of any warranty maintenance or repair of emission
related parts and will be provided without charge to the owner. Any replacement part that is equivalent in performance or durability
may be used in non-warranty maintenance or repair and will not reduce the warranty obligations of the manufacturer.
• The following components are included in the emission related warranty: engine, air filter, carburetor, primer, fuel lines, fuel pick
up/fuel filter, ignition module, spark plug and muffler.
WARRANTY STATEMENT
5
INSTALL AND ADJUST THE D-HANDLE
Install
1. Place the D-handle down on to the shaft housing and the
bottom clamp so that the handle slants towards the shaft grip
(Fig. 1). Place handle and clamp a minimum of 6 inches from
the end of the shaft grip.
2. Start screws with a flat-head or T-25 Torx screwdriver. Do not
tighten until handle is adjusted.
Adjust
3. While holding the unit in the operating position (Fig. 2), position
the D-handle to the location that provides you the best grip.
4. Tighten the clamp screws evenly until the D-handle is secure.
INSTALL TRIMMER / BLOWER ATTACHMENT
NOTE: To make installation easier, place the unit on the
ground or on a workbench.
1. Turn knob counterclockwise to loosen coupler (Fig. 14, p. 8).
2. While firmly holding trimmer attachment, push it straight into
the coupler until the release button snaps into the primary
hole (Fig. 15, p. 8).
NOTE: Aligning the release button with the guide recess will
help installation (Fig. 15, p. 8).
3. Turn the knob clockwise to tighten.
APPLICATIONS
Use the trimmer to cut grass and light weeds, and decorative
trimming around trees, fences, etc.
Use the blower to clean around buildings, walls, and fences
(Figs. 7 & 8), and also around trees, shrubs, and flower beds
(Fig. 9).
INSTALLING CUTTING ATTACHMENT SHIELD
1. Place the narrow end of the cutting attachment shield over
the shield bracket at the back of the attachment body and
position it so that the circular cut-out slips over the guard
assembly peg (Fig. 2).
2. Place the locking nut
into the hexagonal hole
on the left side of the
guard and hold in place.
3. Insert the assembly
screw into the hole on
the right side of the
guard and screw it
into the nut on the left
side using a Phillipshead screwdriver.
4. Make sure the screw
is tight before
operating the unit.
Fig. 1
(4) Screws
Shaft Grip
Shaft
Housing
On/Off Stop Control
Minimum 6 Inches
(15.24 cm)
D-Handle
Bottom Clamp
Cutting
Attachment
Shield
Fuel Cap
D-Handle
Hassle Free IV
®
Shaft Grip
Shaft Housing
Starter Rope
Grip
Throttle Control
Primer
Bulb
Air Filter/Muffler
Cover
Spark Plug
Line Cutting
Blade
Convertible™
Coupler
Blower
On/Off Stop Control
KNOW YOUR TRIMMERASSEMBLY INSTRUCTIONS
Shift
Handle
Muffler
SELECTING THE TRIMMER OR BLOWER
To switch between the trimmer and blower functions of this
unit, make sure that the unit is turned off and the engine has
stopped running.
To Use the Trimmer
To use the trimmer, make sure the
shift handle is in the DOWN
position before starting the unit.
1. If the shift handle is in the UP
position, grasp the red shift
latch (Fig. 3) on the shift
handle and squeeze until the
internal locking mechanism
releases.
2. Push the shift handle DOWN
until the red shift latch locks
into place. DO NOT FORCE.
3. Start the unit following the
Starting Instructions (p. 6) and
the unit is ready for use.
To Use the Blower
To use the blower, make sure the shift handle is in the UP position
before starting the unit.
1. If the shift handle is in the DOWN position, grasp the red shift
latch (Fig. 3) on the shift handle and squeeze until the internal
locking mechanism releases.
2. Pull the shift handle UP until the red shift latch locks into
place. DO NOT FORCE.
3. Start the unit following the Starting Instructions (p. 6) and the
unit is ready for use.
WARNING:
To avoid serious personal injury or
damage to the unit, DO NOT attempt to shift between
the trimmer and the blower while the unit is operating.
®
Fig. 3
Shift Latch
Shift Handle
Fig. 2
Guard
Assembly
Peg
Shield
Bracket
6
STARTING/STOPPING INSTRUCTIONS
WARNING:
Operate this unit only in a wellventilated outdoor area. Carbon monoxide exhaust
fumes can be lethal in a confined area.
WARNING: Avoid accidental starting. Make sure
you are in the starting position when pulling the starter
rope (Fig. 6).
To avoid serious injury, the operator and
unit must be in a stable position while starting.
1. Mix gas with oil.
2. Fill the fuel tank with the fuel/oil mixture. See Oil and
Fuel Mixing Instructions above.
NOTE: There is no need to turn the unit on. The On/Off Stop
Control (Fig. 4) is in the ON ( I ) position at all times.
3. Fully press and release the primer bulb 10 times, slowly.
Some amount of fuel should be visible in the primer
bulb and fuel lines (Fig. 5). If you can’t see fuel in the
bulb, press and release the bulb as many times as it
takes until you can see fuel in it.
4. Crouch in the starting position (Fig. 6), do not
squeeze the throttle, and pull the starter rope with a
controlled and steady motion until the unit starts.
Wait 10 to 15 seconds, then squeeze the throttle to
control the cutting or blowing speed.
IF...
the engine does not start, go back to step 3.
NOTE: This unit uses the Incredi-Pull™ starting system
with MAX FIRE IGNITION™, which significantly
reduces the effort required to start the engine. You
must pull the starter rope out far enough to hear the
engine attempt to start. There is no need to pull the
rope briskly-- there is no harsh resistance when pulling.
Be aware that this starting method is vastly different
from (and much easier than) what you may be used to.
Throttle Control
Fig. 6
Starting
Position
Fig. 5
Primer Bulb
Fig. 4
Start/On ( I )
Stop/Off (O)
Throttle
Control
STARTING INSTRUCTIONS
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control. Allow the
engine to cool down by idling.
Trimmer
Equipped With
Incredi-Pull
Starting
2. Press and hold On/Off Stop Control in the OFF (O) position
until engine comes to a complete stop (Fig. 4)
To Obtain Correct Fuel Mix:
Thoroughly mix the proper ratio of 2-cycle engine oil with
unleaded gasoline in a separate fuel can. Use a 40:1 fuel/oil
ratio (One gallon (3.8 liters) of unleaded gasoline mixed with
one 3.2 oz. (95 ml.) bottle of 2-cycle oil makes a 40:1 fuel/oil
ratio). Do not mix them directly in the engine fuel tank. See the
Fuel Mixture Table for specific gas and oil mixing ratios.
OIL AND FUEL MIXING INSTRUCTIONS
Old and/or improperly mixed fuel are the main reasons for the
unit not running properly. Be sure to use fresh (less than 60
days old), clean unleaded fuel. Follow the instructions carefully
for the proper fuel/oil mixture.
Definition of Blended Fuels
Today's fuels are often a blend of gasoline and oxygenates
such as ethanol, methanol, or MTBE (ether). Alcohol-blended
fuel absorbs water. As little as 1% water in the fuel can make
CAUTION: For proper engine operation and
maximum reliability, pay strict attention to the oil and
fuel mixing instructions on the 2-cycle oil container.
Using improperly mixed fuel can severely damage
the engine.
fuel and oil separate and
leads to formation of acids
during storage. When
using alcohol-blended
fuel, use fresh fuel.
Using Blended Fuels
If you choose to use a
blended fuel, or its use is
unavoidable, follow
recommended
precautions:
• Always use the fresh fuel mix explained in the operator's manual
• Always shake the fuel mix before fueling the unit
• Drain the tank and run the engine dry before storing the unit
NOTE: Dispose of the old fuel/oil mix in accordance to
Federal, State and Local regulations.
UNLEADED GAS
2-CYCLE OIL
+
UNLEADED GAS 2 CYCLE OIL
1 GALLON US 3.2 FL. OZ.
(3.8 LITERS) (95 ml)
1 LITER 25 ml
MIXING RATIO - 40:1
WARNING:
Remove fuel cap slowly to avoid injury
from fuel spray. Never operate the unit without the
fuel cap securely in place.
OIL & FUEL INFORMATION
WARNING: Gasoline is extremely flammable.
Ignited vapors may explode. Always stop the engine
and allow it to cool before filling the fuel tank. Do not
smoke while filling the tank. Keep sparks and open
flames at a distance from the area.
WARNING: 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.
7
OPERATING INSTRUCTIONS
HOLDING THE UNIT
Before operating the unit, stand in the operating position (Figs.
7–9). Check for the following:
• The operator is wearing eye protection and proper
clothing.
• The right arm is slightly bent, and the hand is holding
the shaft grip.
• The left arm is straight, and the hand is holding the Dhandle.
• The unit is at waist level.
• The trimmer/blower attachment is parallel to the
ground and is positioned so debris is blown away from
operator.
Fig. 7
OPERATING TIPS WHEN USING TRIMMER/BLOWER
ATTACHMENT
• To reduce the risk of hearing loss associated with
sound level(s), the use of hearing protection is
required.
• Operate power equipment only at reasonable hours –
not early in the morning or late at night when people
might be disturbed. Comply with time listed in local
ordinance. Usual recommend-ations are 9:00 am to
5:00 pm, Monday through Saturday.
• To reduce noise levels, limit the number of pieces of
equipment used at any one time.
• To reduce noise levels, operate power blowers at the
lowest possible speed to do the job.
• Use rakes and brooms to loosen debris before blowing.
• In dusty conditions, slightly dampen surfaces or use a
mister attachment when water is available.
• Conserve water by using power blowers instead of
hoses for many lawn and garden applications,
including areas such as gutters, screens, patios, grills,
porches, and gardens.
• Watch out for children, pets, open windows, or freshly
washed cars, and blow debris away.
• After using blowers and other equipment, CLEAN UP!
Dispose of debris in trash receptacles.
Fig. 8
Fig. 9
WARNING: To prevent serious injury to yourself
or others, or possible damage to property, never
point the blower in the direction of people or pets,
or in the direction of windows. Always direct the
blowing debris away from people, animals, and
windows. Use extra caution when blowing debris
near solid objects such as trees, automobiles,
walls, etc.
WARNING: Always wear eye, hearing, foot and
body protection to reduce the risk of injury when
operating this unit.
LINE REPLACEMENT
for Hassle-Free IV™ Cutting Head
Always use Craftsman Hassle-Free IV™ XTRA QUIET Spiral Line.
NOTE: Before inserting new line into the holes in the cutting
head, identify the proper holes. Follow directions as shown
on the line glide plate. DO NOT attempt to remove the
cutting head from the unit when replacing line.
8
OPERATING INSTRUCTIONS
Craftsman Convertible™ Feature
The coupler allows you to convert this unit for use with the
following add-on attachments:
• Cultivator
• Blade Edger
• Brush Cutter
• Pruner
To Install Attachments
NOTE: To make installation easier,
place the unit on the ground or
on a workbench.
1. Make sure the unit is turned
completely off.
2. Turn the knob counterclockwise to loosen the coupler (Fig. 14).
3. While firmly holding the attachment, push it straight into the
coupler until the release button (Fig. 15) snaps into the
primary hole (Fig. 15). The primary hole is on the opposite
side of the coupler from the knob (Fig. 15). Align the release
button with the Guide Recess (Fig. 15) to help installation.
4. Turn the knob clockwise to tighten (Fig. 16).
To Remove Attachments
1. Make sure the unit is turned
completely off.
2. Turn the knob
counterclockwise to loosen the
coupler (Fig. 14).
3. Press and hold the release
button (Fig. 15).
4. While firmly holding the upper
shaft boom (Fig. 16), pull the
attachment out of the coupler.
1. Remove the old line and line glide plate from the cutting
head.
2. Clean entire surface of cutting head. Note positions “A”
and “B” on the cutting head.
3. Reinstall line glide plate (Fig.
10). Align arrow with “A” on
the cutting head.
NOTE: Line glide plate must be
reinstalled in cutting head
before inserting new line.
4. Insert both ends of your
line through the proper
holes in the side of the
cutting head (Fig. 11).
5. Pull the line and make
sure the line is against the
hub and is fully extended
through the positioning
tunnels (Fig. 12).
6. Correctly installed line will
be the same length on
both sides.
NOTE: Do not rest the
Hassle-Free IV™ 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 ground.
• Cut from left to right whenever possible. Cutting to the right
improves the unit's cutting efficiency. Clippings are thrown
away from the operator.
• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon:
- Following the trimming tips
- What vegetation is being cut
- Where vegetation is being
cut
DECORATIVE TRIMMING
Decorative trimming is
accomplished by removing all
vegetation around trees, posts,
fences and more. Rotate the
whole unit so that the cutting
attachment is at a 30° angle to
the ground (Fig. 13).
WARNING: Do not remove or alter the line cutting
blade assembly. Excessive line length will make the
clutch overheat. This may lead to serious personal
injury or damage to the unit.
Positioning
Tunnel
Fig. 11
Positioning
Tunnel
Line against
the hub
Fig. 12
WARNING: Before you begin using any
attachment, read and understand the manual that
came with the attachment. Follow all safety
information contained within.
WARNING: To avoid serious personal injury and
damage to the unit, shut the unit off before
removing or installing attachments.
Cutting
Head
Line Glide
Plate
Arrow
Fig. 10
Knob
Coupler
Fig. 14
CAUTION: These attachments are to be snapped
into the primary hole only. Using the wrong hole could
lead to personal injury or damage to the unit.
CAUTION: Before operating this unit, be sure
that the release button is fully snapped into the
primary hole (Fig. 15), and that the knob (Fig. 16) is
securely tightened.
Fig. 15
Craftsman Convertible™
Coupler
Release Button
Guide
Recess
Knob
Primary Hole
30º
Fig. 13
CAUTION: Lock the release button in the primary
hole (Fig. 15) and securely tighten the knob before
operating this unit.
Fig. 16
Knob
Attachment
Upper Shaft
Boom
Coupler
Attachment
3. Wash the filter in
detergent and water
(Fig. 19). Rinse the filter
thoroughly. Squeeze
out excess water. Allow
it to dry completely.
4. Apply enough clean SAE
30 oil to lightly coat the
filter (Fig. 20).
5. Squeeze the filter to
spread and remove
excess oil (Fig. 21).
6. Replace the air filter
inside the air filter/muffler
cover (Fig. 18).
Reinstalling the Air Filter/Muffler
Cover
1. Place the air filter/muffler cover
over the back of the carburetor
and muffler. Align the screw holes.
2. Insert the four (4) screws into the
holes in the air filter/muffler cover
(Fig. 17) and tighten. Do not over
tighten.
SPARK ARRESTOR MAINTENANCE
NOTE: Pay close attention when disassembling the muffler so
you can put it back together correctly. Failure to do so will
damage the unit and may cause serious personal injury.
1. Remove air filter/muffler cover. Refer to Removing the Air
Filter/Muffler Cover (p. 9).
2. Locate the muffler, but do not remove it. Find the screw on
the bottom of the muffler (Fig. 22). This screw holds the
Spark Arrestor Hood Assembly and the spark arrestor
screen to the bottom of the muffler. Remove this screw
using either a Torx T20 or flat blade screwdriver.
3. Using a small flat blade screwdriver, carefully pry up the
spark arrestor screen from the recessed hole, taking care to
notice that the “raised” part of the spark arrestor screen is
inside the recessed hole. Remove the spark arrestor screen
from the
muffler.
4. Clean the spark
arrestor screen
with a wire
brush. Replace
it if it is
damaged, or if
you are unable
to clean it
thoroughly.
9
MAINTENANCE & REPAIR INSTRUCTIONS
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
1. Remove the four (4) screws
securing the air filter/muffler
cover (Fig. 17). Use a flat
blade or T20 Torx bit
screwdriver.
2. Pull the cover from the
engine. Do not force.
Cleaning the Air Filter
Failure to maintain your air
filter properly can result in poor
performance or can cause
permanent damage to your
engine.
1. Remove air filter/muffler
cover. Refer to Removing
the Air Filter/Muffler Cover
above.
2. Turn cover over and look inside to locate the air filter.
Remove the air filter from inside the air filter/muffler cover
(Fig. 18).
WARNING: To avoid serious personal injury,
always turn your unit off and allow it to cool before
you clean or service it.
Fig. 19
Fig. 20
Fig. 21
Air Filter
Inside Muffler
Cover
Fig. 18
Screws
Fig. 17
Fig. 22
Spark Arrestor
Screen
Spark Arrestor
Hood
Screw
Muffler
To Engine
Tabs
Slots
FREQUENCY MAINTENANCE REQUIRED SEE
Before starting
engine
Fill fuel tank with fresh fuel p. 6
Every 10 hours Clean and re-oil air filter p. 9
Every 25 hours
Check and clean spark arrestor
Check spark plug condition and gap
p. 9
p. 10
Every 50 hours
Inspect exhaust port and spark
arrestor screen for clogging or
obstruction
p. 9
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should also be
a part of any seasonal tune-up.
NOTE: Maintenance, replacement, or repair of the emission
control devices and system may be performed by a Sears
or other qualified service dealer. Call 1-800-4-MY-HOME
®
for more information.
In order to assure peak performance of your engine, inspection
of the engine exhaust port may be necessary after 50 hours of
operation. If you notice lost RPM, poor performance or general
lack of acceleration, this service may be required. If you feel
your engine is in need of this inspection, refer service to a
Sears or other qualified service dealer. Call 1-800-4-MY-
HOME
®
for more information. DO NOT attempt to perform this
process yourself as engine damage may result from
contaminants involved in the cleaning process for the port.
WARNING: To prevent serious injury, never
perform maintenance or repairs with unit running.
Always service and repair a cool unit. Disconnect the
spark plug wire to ensure that the unit cannot start.
10
REPLACING THE SPARK PLUG
Use a Champion RDJ7Y spark plug or equivalent. Remove the
plug after every 25 hours of operation and check its condition.
1. Stop the engine and allow it to cool. Grasp the plug boot
firmly and pull it from the spark
plug.
2. Clean around the spark plug.
Remove the spark plug from the
cylinder head by turning a 5/8-inch
socket counterclockwise.
3. Replace a cracked, fouled or dirty
spark plug. Set the air gap at
0.020 in. (0.5 mm) using a feeler gauge (Fig. 24).
4. Install a correctly-gapped spark plug in the cylinder head.
Tighten by turning the 5/8-inch socket clockwise until snug.
If using a torque wrench, torque to:
110-120 in.•lb. (12.3-13.5 N•m). Do not over-tighten.
5. Reattach the plug boot.
TRANSPORTING
• Allow the engine to cool before transporting.
• Drain fuel from unit.
• Tighten fuel cap before transporting.
• Secure the unit while transporting.
CLEANING
Use a small brush to clean off the outside of the unit. Do not
use strong detergents. Household cleaners that contain
aromatic oils such as pine and lemon, and solvents such as
kerosene, can damage plastic housing or handle. Wipe off any
moisture with a soft cloth.
STORAGE
• Never store a fueled unit where fumes may reach an open
flame or spark.
• Allow the engine to cool before storing.
• Store the unit locked up to prevent unauthorized use or damage.
• Store the unit in a dry, well-ventilated area.
• Store the unit out of the reach of children.
LONG TERM STORAGE
If you plan on storing the unit for an extended time, use the
following storage procedure:
1. Carefully drain the fuel tank by running the unit dry or
remove fuel cap and tip the motor housing over and drain
oil/gas fuel into a container with the same 2-cycle fuel
mixture. Do not use fuel that has been stored for more than
60 days.
2. Start the engine and allow it to run until it stalls. This
ensures that all fuel has been drained from the carburetor.
3. Allow the engine to cool. Remove the spark plug and put 1
oz. (30 ml) of any high quality motor oil or 2-cycle oil into
the cylinder. Pull the starter rope slowly to distribute the oil.
Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil from the
cylinder before attempting to start the trimmer after storage.
4. Thoroughly clean the unit and inspect it for any loose or
damaged parts. Repair or replace damaged parts and
tighten loose screws, nuts or bolts. The unit is ready for
storage.
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable through the air
filter/muffler cover (Fig. 23).
NOTE: Careless adjustments can
seriously damage your unit.
Contact a Sears or other
qualified service dealer to
make carburetor adjustments.
Call 1-800-4-MY-HOME
®
for
more information.
Check Fuel Mixture
Old and/or improperly mixed fuel is
usually the reason for improper unit performance. Drain and
refill the tank with fresh, properly-mixed fuel prior to making any
adjustments. Refer to Oil and Fuel Information (p. 6).
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 and change the air/fuel
mixture. This is often mistaken for an out of adjustment
carburetor. Check the condition of the air filter before adjusting
the idle speed screw. Refer to Air Filter Maintenance (p. 9).
Adjust Idle Speed Screw
If, after checking the fuel mixture 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 at a high idle for a minute to
warm up. Refer to Starting/Stopping Instructions (p. 6).
2. Release the throttle trigger 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.
23). Turn the idle speed screw in, clockwise, 1/8 of a turn
at a time (as needed) until the engine idles smoothly.
3. If the cutting head is spinning at idle, turn the idle speed
screw counterclockwise 1/8 of a turn at a time (as
needed), to reduce idle speed.
Checking the fuel mixture, cleaning the air filter, and adjusting
the idle speed should solve most engine problems. If not, have
the carburetor adjusted by a Sears or other qualified service
dealer. Call 1-800-4-MY-HOME
®
for more information.
0.020 in.
(0.5 mm)
Fig. 24
Spark Plug
WARNING: Do not sand blast, scrape or clean
spark plug electrodes. Grit in the engine could
damage the cylinder.
WARNING: To avoid serious personal injury,
always turn your trimmer off and allow it to cool
before you clean or maintain it.
WARNING: The cutting attachment may spin
during idle speed adjustments. Wear protective
clothing and observe all safety instructions to
prevent serious personal injury.
5. Reinstall the spark arrestor screen by putting the “raised”
portion of the screen inside the recessed hole of the muffler.
Make sure that the spark arrestor screen fits flat against the
muffler.
6. Place the spark arrestor plate on top of the spark arrestor
screen with the raised side up and the opening facing
toward the engine (Fig. 22).
7. Place the spark arrestor hood on top of the spark arrestor
plate with the “raised” side up and the opening facing
AWAY from the engine (Fig. 22). Verify that the exhaust will
be directed AWAY from the engine.
8. Replace the screw you removed in Step 2 and tighten it
securely.
9. Reinstall the air filter/muffler cover (Fig. 17).
Idle
Speed
Screw
Fig. 23
MAINTENANCE & REPAIR INSTRUCTIONS
WARNING:
If the spark arrestor hood and spark
arrestor screen are not tightened securely, they could
fall off causing damage to the unit and possible
serious personal injury.
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