Sears 316.79197 User Manual
Sears, Roebuck and Co., Hoffman Estates, IL 60179, U.S.A.
Visit our website: www.sears.com/craftsman
Operator’s Manual
4-Cycle
WEEDWACKER
®
GAS TRIMMER
Model No. 316.791970
• SAFETY
• ASSEMBLY
• OPERATION
• MAINTENANCE
• PARTS LIST
• ESPAÑOL, P. E1
769-03546A
®
CAUTION: Before using
this product, read this
manual and follow all
safety rules and operating
instructions.
2
TABLE OF CONTENTS
Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . . . . . . .2
Warranty Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Oil and Fuel Information . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Starting/Stopping Instructions . . . . . . . . . . . . . . . . . . . . . .7
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Maintenance and Repair Instructions . . . . . . . . . . . . . . . .9
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E17
Service Numbers . . . . . . . . . . . . . . . . . . . . . . . .Backcover
RULES FOR SAFE OPERATION
• IMPORTANT SAFETY INSTRUCTIONS •
READ ALL INSTRUCTIONS BEFORE OPERATING
• Read the instructions carefully. Be familiar with the controls and
proper use of the unit.
• Do not operate this unit when tired, ill, or under the influence of
alcohol, drugs, or medication.
• Children and teens under the age of 15 must not use the unit,
except for teens guided by an adult.
• All guards and safety attachments must be installed properly
before operating the unit.
• Inspect the unit before use. Replace damaged parts. Check for
fuel leaks. Make sure all fasteners are in place and secure.
Replace parts that are cracked, chipped, or damaged in any way.
Do not operate the unit with loose or damaged parts.
• Carefully inspect the area before starting the unit. Remove all
debris and hard or sharp objects such as glass, wire, etc.
• Be aware of 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.
• Use only Hassle-Free™ XRTA QUIET Spiral Line. Never use
metal-reinforced line, wire or rope. These can break off and
become dangerous projectiles.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments or repairs
before using unit.
FUEL SAFETY WARNINGS FOR GAS UNITS
• 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.
• 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. 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.
•M
ove 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.
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 grasscovered 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 #753-05297 Spark Arrestor Kit.
WARNING
THE ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
CALIFORNIA PROPOSITION 65 WARNING
Read the Operator’s Manual and follow all warnings and safety
instructions. Failure to do so can result in serious injury to the
operator and/or bystanders.
FOR QUESTIONS, CALL
1–800–659–5917
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.
NOTE: Advises you of information or instructions vital to the
operation or maintenance of the equipment.
SAFETY ALERT:
Indicates danger, warning or
caution. Attention is required in order to avoid serious
personal injury. May be used in conjunction with other
symbols or pictographs.
DANGER:
Failure to obey a safety warning will result
in serious injury to yourself or to others. Always follow
the safety precautions to reduce the risk of fire, electric
shock and personal injury.
WARNING:
Failure to obey a safety warning can
result in injury to yourself and others. Always follow the
safety precautions to reduce the risk of fire, electric
shock and personal injury.
CAUTION:
Failure to obey a safety warning may result
in 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.
SYMBOL MEANING
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.
3
• SAFETY AND 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.
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 Z87.1–1989 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 as a trimmer. 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.
• 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.
• Use the right tool. Only use this tool for its intended purpose.
• Do not overreach. Always keep proper footing and balance.
• Always hold the unit with both hands when operating. Keep a
firm grip on both handles or grips.
•K
eep hands, face, and feet at a distance 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.
RULES FOR SAFE OPERATION
• Do not operate the engine faster than the speed needed to cut, trim
or edge. Do not run the engine at high speed when not cutting.
• 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.
• Stop the unit, switch 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 distributed 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 area, locked up or up high to prevent
unauthorized use or damage, out of the reach of children.
• Never douse or squirt the unit with water or any other liquid. Keep
handles dry, clean and free from debris. Clean after each use, see
Cleaning and Storage Instructions.
• Keep these instructions. Refer to them often and use them to
instruct other users. If you loan someone this unit, also loan them
these instructions.
SAVE THESE INSTRUCTIONS
SYMBOL MEANING
SYMBOL MEANING
• READ OPERATOR'S MANUAL
WARNING: 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
• WEAR EYE AND HEARING PROTECTION
WARNING: Thrown objects and loud noise can
cause severe eye injury and hearing loss. Wear eye
protection meeting ANSI Z87.1–1989 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
attachment 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.
• SHARP BLADE
WARNING: Sharp blade on cutting attachment
shield. To prevent serious injury, do not touch the line
cutting blade.
• ON/OFF STOP CONTROL
ON / START / RUN
• SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May be used in
conjunction with other symbols or pictographs.
WARRANTY STATEMENT
Repair Protection Agreements
Congratulations on making a smart purchase. Your new Craftsman® product is designed and manufactured for years of dependable
operation. But like all products, it may require repair from time to time. That’s when having a Repair Protection Agreement can save you
money and aggravation.
Here’s what the Repair Protection Agreement* includes:
Expert service by our 10,000 professional repair specialists
Unlimited service and no charge for parts and labor on all covered repairs
Product replacement up to $1500 if your covered product can’t be fixed
Discount of 10% from regular price of service and related installed parts not covered by the agreement; also, 10% off regular price of
preventive maintenance check
Fast help by phone – we call it Rapid Resolution – phone support from a Sears representative. Think of us as a “talking owner’s manual.”
Once you purchase the Repair Protection Agreement, a simple phone call is all that it takes for you to schedule service. You can call anytime
day or night, or schedule a service appointment online.
The Repair Protection Agreement is a risk-free purchase. If you cancel for any reason during the product warranty period, we will provide a
full refund. Or, a prorated refund any time after the product warranty period expires. Purchase your Repair Protection Agreement today!
Some limitations and exclusions apply. For prices and additional information in the U.S.A. call 1-800-827-6655.
*Coverage in Canada varies on some items. For full details call Sears Canada at 1-800-361-6665.
Sears Installation Service
For Sears professional installation of home appliances, garage door openers, water heaters, and other major home items, in the U.S.A. or
Canada call 1-800-4-MY-HOME
®
.
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 materal and workmanship. Sears will NOT pay for:
• Expendable items that can wear out from normal use within the warranty period, such as cutting line, filters or spark plugs.
• Repairs necessary because of accident or failure to operate or maintain the product according to all supplied instructions.
• Preventive maintenance, or repairs necessary due to improper fuel mixture, contaminated or stale fuel.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., Hoffman Estates, IL 60179
4
Cutting Attachment
Shield
Fuel Cap
Throttle
Control
D-Handle
Hassle-Free™ Plus
Shaft Grip
Primer Bulb
Oil Fill Plug
Cold Weather
Start Lever
Shaft
Housing
Starter Rope
Grip
Muffler
Craftsman®
Convertible™ Coupler
On/Off Stop
Control
Air Filter Cover
ADJUSTING THE D-HANDLE
1. Loosen the screws on the D-handle (Fig. 1).
2. While holding the unit in the operating position (Fig. 2), position
the D-handle to the location that provides you the best grip.
3. Tighten the clamp screws evenly, until the D-handle is secure.
Fig. 1
(4) Screws
Shaft Grip
Shaft
Housing
On/Off Stop Control
Minimum 6 Inches
(15.24 cm)
D-Handle
Bottom Clamp
Spark
Plug
KNOW YOUR UNIT
ASSEMBLY INSTRUCTIONS
INSTALL LINE TRIMMER ATTACHMENT
NOTE: To make installation easier,
place the unit on the ground or
on a workbench.
1. Turn knob counterclockwise to
loosen coupler (Fig. 16, p. 9).
2. While firmly holding attachment,
push it straight into the coupler
until the release button snaps into
the primary hole (Fig. 17, p. 9).
NOTE: Aligning the release button with
the guide recess (Fig. 17, p. 9)
will help installation.
3. Turn the knob clockwise to tighten.
LINE TRIMMER APPLICATIONS
Cutting grass and light weeds; edging;
and decorative trimming around trees,
fences, etc.
Line
Cutting
Blade
WARNING: DO NOT ATTEMPT TO USE THIS UNIT
UNTIL THE D-HANDLE HAS BEEN ROTATED INTO
OPERATING POSITION (Fig. 1).
Fig. 2
Trimmer
Attachment
5
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 without oil. In order to avoid damage to
the unit, put oil in the crankcase before you attempt to start
the unit.
Your unit is supplied with one 3.04
fluid oz. (90 ml.) bottle of SAE 30 SF,
SG, SH oil (Fig. 3).
NOTE: Save the empty oil bottle. It
can be used to measure the
correct amount during future
oil changes. See Changing the
Oil.
1. Unscrew the top of the bottle of
oil and remove the paper seal
covering the opening. Replace
the top. Next, cut the tip off the
funnel spout (Fig. 3).
2. Tip unit so that the back of the
engine is facing up in a vertical
position.
3. Remove the oil fill plug from the
crankcase (Fig. 4).
4. Pour the entire bottle of oil into
the oil fill hole (Fig. 5).
NOTE: Never add oil to the fuel or
fuel tank.
5. Wipe up any oil that may have
spilled and reinstall the oil fill
plug.
Check oil before each use and
change as needed. Refer to
Checking the Oil Level.
RECOMMENDED FUEL TYPE
Old fuel is the primary reason for improper unit performance. Be
sure to use fresh, clean, unleaded gasoline. Dispose of the old
gasoline in accordance to Federal, State and Local regulations.
NOTE: This is a four cycle engine. In order to avoid damage to the
unit, do not mix oil with gasoline.
Definition of Blended Fuels
Today's fuels are often a blend of gasoline and oxygenates such as
ethanol, methanol or MTBE (ether). Alcohol-blended fuel absorbs
water. As little as 1% water in the fuel can form acids when stored.
Use fresh fuel (less than 60 days old), when using alcohol-blended fuel.
Using Blended Fuels
If you choose to use a blended fuel, or its use is unavoidable, follow
recommended precautions:
• Always use fresh unleaded gasoline
• Use a gas stabilizer fuel additive
• Drain tank and run the engine dry before storing unit
Using Fuel Additives
The use of a gas stabilizer 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
1. Remove the fuel cap (Fig. 6).
2. Place the gas container’s spout into the fill hole on the fuel tank
(Fig. 5) and fill the tank.
NOTE: Do not overfill the tank.
3. Wipe up any gasoline that may have spilled.
4. Reinstall the fuel cap.
5. Move the unit at least 30 ft. (9.1 m) from the fueling source and
site before starting the engine.
Fig. 3
Funnel
Spout
Fig. 6
Fuel Cap
Fuel Tank
Gas Can Spout
OIL AND FUEL INFORMATION
WARNING: Remove fuel cap slowly to avoid injury
from fuel spray. Never operate the unit without the fuel
cap securely in place.
Oil Fill Plug
Oil Fill
Hole
O-Ring
Fig. 4
Fig. 5
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.
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: OVERFILLING OIL CRANKCASE MAY
CAUSE SERIOUS PERSONAL INJURY. Check and
maintain the proper oil level in the crank case; it is
important and cannot be overemphasized. Check the
oil before each use and change it as needed. See
Changing the Oil.
6
Start/On (I)
Stop/Off (O)
Throttle Control
Fig. 9
STARTING INSTRUCTIONS
WARNING: Avoid accidental starting. Make sure you
are in the starting position when pulling the starter rope
(Fig. 8). To avoid serious injury, the operator and unit
must be in a stable position while starting.
WARNING: Operate this unit only in a well-
ventilated outdoor area. Carbon monoxide exhaust
fumes can be lethal in a confined area.
Starter Rope
Throttle Control
Fig. 8
Primer Bulb
Fig. 7
STARTING/STOPPING INSTRUCTIONS
1. Check the oil level in the crankcase. Refer to Checking
the Oil Level.
2. Fill the fuel tank with fresh, clean unleaded gasoline.
Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off
Stop Control 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. 7). If you can’t see fuel
in the bulb, press and release the bulb as many times
as it takes before you can see fuel in it.
IF UNIT IS BELOW 40°F... Push the Cold Weather Start Lever
(Fig. 7) down to the start/closed position and continue to
step 4. DO NOT push this lever down if the unit temperature
is above 40°F.
4. With the unit in the starting position (Fig. 8), do not
squeeze the throttle control. Pull the starter rope out a
short distance, until you feel some resistance. This is
usually around 2-4 inches. Pull the starter rope out with
a controlled and steady motion. Repeat this 5 times.
The engine should start.
5. If engine starts, squeeze the throttle control to warm
up the engine for 15 to 30 seconds. In cold weather, let
the engine warm up for 30 to 60 seconds.
IF ENGINE STARTS AND WEATHER IS COLD... (below
40°F), lift the Cold Weather Start Lever back up to the
run/open position.
IF... the engine does not start, go back to step 3.
IF... the engine stops while you are squeezing the throttle,
go back to step 4.
WARM RESTART... Once the engine is warm, just pull the
starter rope to restart. Do not squeeze the throttle
control while pulling the starter rope.
NOTE: The 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.
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control. Allow the engine
to cool down by idling.
2. Press and hold On/Off Stop Control in the OFF (O) position
until engine comes to a complete stop (Fig. 9).
Cold Weather
Start Lever
Closed
Open
7
3. Push in the release button (Fig. 17)
and twist the shaft 90° until the
release button snaps into the 90°
hole (Fig. 16).
4. Turn the knob clockwise to lock the
coupler (Fig. 18).
OPERATING INSTRUCTIONS
HOLDING THE TRIMMER
Before operating the unit, stand in the
operating position (Fig. 10). Check for
the following:
• The operator is wearing eye
protection and proper clothing
• With a slightly-bent right arm, the
operator’s right hand is holding the
shaft grip
• The operator’s left arm is straight, the left
hand holding the assist handle
• The unit is at waist level
• The cutting attachment is parallel to the
ground and easily contacts the grass
without the need to bend over
TIPS FOR BEST TRIMMING
RESULTS
• For best trimming results, operate
unit with throttle control fully squeezed.
• Keep the cutting attachment parallel to the ground.
• Do not force the cutting attachment. Allow the tip of the line to do the
cutting, especially along walls. Cutting with more than the tip will
reduce cutting efficiency and may overload the engine.
• Cut grass over 8 inches (200 mm) by working from top to bottom in
small increments to avoid premature line wear or engine drag.
• Cutting from right to left improves the unit's cutting efficiency.
Clippings are thrown away from the operator.
• Slowly move the trimmer into and out of the cutting area at the
desired height. Move either in a forward-backward or side-to-side
motion. Cutting shorter lengths produces the best results.
• Trim only when grass and weeds are dry.
• The life of your cutting line is dependent upon:
– proper adherence of explained trimming techniques
– what vegetation is cut, and
– where vegetation is cut.
For example, the line will wear faster
when trimming against a foundation
wall as opposed to trimming around a
tree.
DECORATIVE TRIMMING
Decorative trimming is accomplished
by removing all vegetation around
trees, posts, fences and more.
Rotate the whole unit so that the
cutting attachment is at a 30° angle
to the ground (Fig. 15).
USING THE CRAFTSMAN CONVERTIBLE™ FEATURE
You can convert this unit to edge grass.
1. Make sure the unit is turned
completely off.
2. Turn the knob counterclockwise to
loosen coupler (Fig. 16).
WARNING: Before you begin using any attachment,
read and understand the manual that came with the
attachment. Follow all safety information contained
within.
WARNING: Always wear eye, hearing, foot and
body protection to reduce the risk of injury when
operating this unit.
Fig. 10
Fig. 15
Knob
Coupler
Fig. 16
90˚ Edging Hole
(Trimmer Only)
Knob
Attachment
Upper Shaft
Boom
Fig. 18
Fig. 17
Craftsman Convertible™
Coupler
Release Button
Guide Recess
Knob
Primary Hole
CRAFTSMAN CONVERTIBLE™ FEATURE
The coupler allows you to convert this unit for use with the following
attachments:
• Cultivator
• Blade Edger
•Blower
• 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. 16).
3. While firmly holding the attachment, push it straight into the
coupler until the release button (Fig. 17) snaps into the primary
hole (Fig. 17). The primary hole is on the opposite side of the
coupler from the knob (Fig. 17). Align the release button with
the Guide Recess (Fig. 17) to help installation.
4. Turn the knob clockwise to tighten.
To Remove Attachments
1. Make sure the unit is turned completely off
2. Turn the knob counterclockwise to loosen the coupler.
3. Press and hold the release button (Fig. 17).
4. While firmly holding the upper shaft boom (Fig. 18), pull the
attachment out of the coupler.
CAUTION: T
hese 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. 16), and that the knob (Fig. 17) is securely
tightened.
WARNING: To avoid
serious personal injury and
damage to the unit, shut
the unit off before
removing or installing
attachments.
8
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.
MAINTENANCE AND REPAIR INSTRUCTIONS
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 you are unsure about these procedures take your unit
to a Sears or other qualified service dealer.
LINE REPLACEMENT
for Hassle-Free™ Plus Cutting
Head
Always use Craftsman HassleFree™ XTRA QUIET Spiral Line.
Choose the line size best suited for
the job at hand. Red colored line is
designed for cutting grass and
small weeds. Black colored line is
designed for cutting larger weeds
and light brush.
NOTE: Before inserting new line
into the holes in the cutting
head, identify the proper
holes. Follow directions as
shown on the glide plate.
Do Not attempt to remove
the cutting head from the
unit when replacing line.
NOTE: Do not mix lines. Use 2
black or 2 red only.
1. Remove the old line and line
glide plate from the cutting
head.
2. Clean entire surface of cutting
head.
3. Reinstall line glide plate (Fig. 11).
The glide plate is a keyed item
and will only fit one way. If it does
not go into the cutting head smoothly, DO NOT force it. Rotate the
glide plate until it slides into the cutting head easily.
NOTE: The glide plate must be installed in the cutting head before
inserting new line.
Positioning
Tunnel
Trimming
Line
Fig. 11
Insertion
Holes
Glide Plate
4. Insert both ends of your line
through the insertion holes in
the side of the cutting head (Fig.
11).
5.
Push and/or pull the line so that
the line is snug 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
(Fig. 13).
NOTE: Make sure that when
installing new line, that the
line is as close to even as
possible. Any variation in
lengths may cause the unit
to vibrate excessively. If this
happens, stop the unit and
make sure the line is even.
7. Repeat steps 4 thru 6 to install
the second trimmer line.
8. Correctly installed, the four
lines will all be the same
length (Fig. 14).
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
Fig. 12
Fig. 13
Fig. 14
FREQUENCY MAINTENANCE REQUIRED SEE
Before starting engine
Fill fuel tank with fresh fuel
Check oil
p. 6
p. 10
Every 10 hours Clean and re-oil air filter p. 11
1st change at 10 hours
At 25 hours/every 25 hours
Every 50 hours
Change oil
Change oil
Clean spark arrestor
p. 10
p. 10
p. 13
10 hours on new engine
Every 25 hours
Every 25 hours
Check rocker arm to valve clearance and adjust
Check rocker arm to valve clearance and adjust
Check spark plug condition and gap
p. 12
p. 12
p. 13
NOTE: Maintenance, replacement, or repair of the emission control
devices and system may be performed by a Sears or other
qualified service dealer.
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 for repair. DO NOT attempt to perform this process
yourself as engine damage may result from contaminants involved in
the cleaning process for the port.
• MAINTENANCE SCHEDULE •
9
CHECKING THE OIL LEVEL
The importance of checking and maintaining the proper oil level in
the crankcase cannot be overemphasized. Check oil before each
use:
1. Stop the engine and allow oil to drain into the crankcase.
2. Place the engine on an elevated, level surface with the cutting
head shield hanging off the surface to get an accurate oil level
reading (Fig. 19).
3. Keep dirt, grass clippings and other debris out of the engine.
Clean the area around the dipstick before removing it.
4. Remove the oil fill plug.
5. Look into the oil fill hole, use a flashlight if needed. The oil
should be just touching the innermost thread (Fig. 19).
6. If the oil level is not touching the innermost thread on the oil fill
hole, add a small amount of oil to the oil fill hole and recheck
(Fig. 20). Repeat this procedure until the oil level reaches the
innermost thread on the oil fill hole.
NOTE: Do not overfill the unit.
NOTE: Make sure the O-ring is in place on the oil fill plug when
checking and changing the oil (Fig. 21).
Fig. 19
Oil Fill Plug
Oil Fill
Hole
O-Ring
Max Oil Fill Line
Fig. 21
Fig. 20
CHANGING THE OIL
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. Unplug spark plug boot to prevent accidental starting.
2. Remove the oil fill plug.
3. Pour the oil out of the oil fill
hole and into a container by
tipping the unit to a vertical
position (Fig. 22). Allow
ample time for complete
drainage.
4. Wipe up any oil residue on
the unit and clean up any oil
that may have spilled.
Dispose of the oil according
to Federal, State and local
regulations.
5. Refill the crankcase with
3.04 fluid ounce (90 ml) of
SAE 30 SF, SG, SH oil.
NOTE: Use the bottle and spout saved from initial use to measure
the correct amount of oil. The top of the label on the bottle
measures approximately 3.04 ounces (90 ml) (Fig. 23).
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. 23).
6. Replace the oil fill plug.
7. Reconnect the spark plug boot.
WARNING: Wear gloves to prevent injury when
handling unit.
Fig. 22
Fill Level
Fig. 23
MAINTENANCE AND REPAIR INSTRUCTIONS
10
NOTE: If the unit is
operated without
the air filter, you
will VOID the
warranty.
7. Reinstall the air filter
cover. Position the
slots on the top of the
air filter cover onto the
tabs at the top of the
back plate (Fig. 28).
8. Swing the cover down
until the tab on the air
filter backplate snaps into place in the slot on the air filter cover
(Fig. 29).
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. 30).
NOTE: Careless adjustments
can seriously damage
your unit. Aside from
the idle speed, only a
Sears or other qualified
service dealer should
make carburetor
adjustments.
1. Check Fuel
Old fuel is usually the reason for idle speed problems. Drain and
refill the tank with fresh fuel prior to making any adjustments. Refer
to Oil and Fuel Information.
2. Clean Air Filter
The condition of the air filter is important to the operation of the
unit. A dirty air filter will restrict air flow. This is often mistaken for
an out of adjustment idle. Check the condition of the air filter before
adjusting the idle speed screw. Refer to Air Filter Maintenance.
MAINTENANCE AND REPAIR INSTRUCTIONS
AIR FILTER MAINTENANCE
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation. It is an
important item to maintain. Failure to maintain your air filter properly
can result in poor performance or can cause permanent damage to
your engine.
1. Open the air filter cover. Push the tab on the under side of the
cover inward. Then pull the air filter cover out and up. (Fig. 24).
2. Remove the air filter (Fig. 23).
3. Wash the filter in detergent and
water (Fig. 25). Rinse the filter
thoroughly and allow it to dry.
4. Apply enough clean SAE 30 motor
oil to lightly coat the filter (Fig. 26).
5. Squeeze the filter to spread and
remove excess oil (Fig. 27).
6. Replace the filter (Fig. 24).
WARNING: To avoid serious personal injury, always
turn the unit off and allow it to cool before you clean or
service it.
Air Filter Cover
Air Filter
Tab
Fig. 24
Fig. 25
Fig. 26
Fig. 27
Idle Adjustment Screw
Fig. 30
Fig. 28
Locking Tab
Tabs
Back Plate
Air Filter
Air Filter Cover
Air Filter
Tab
Fig. 29
WARNING: To prevent serious personal injury, make
sure the cutting attachment has stopped rotating before
you turn it off and set it down.
11
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