NOTE: This operator's manual covers multiple models. Features
may vary by model. Not all features in this manual are applicable
to all models. The model depicted may differ from yours.
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.
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.
SYMBOLMEANING
DANGER:
Failure to obey a safety DANGER symbol WILL result in
serious injury or death to yourself or to others.
WARNING:
Failure to obey a safety WARNING symbol CAN result in
serious injury to yourself or to others.
CAUTION:
Failure to obey a safety CAUTION symbol MAY result in
property damage or injury to yourself or to others.
NOTE: Advises you of information or instructions vital to the
operation
or maintenance of the equipment.
Signals an EXTREME hazard.
Signals a SERIOUS hazard.
Signals a MODERATE hazard.
SAFETY
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
work
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, contact a Sears Parts & Repair Service Center to
install the
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.
er, or the engine be constructed, equipped and
ing ord
priate muffler assembly.
appro
CALIFORNIA PROPOSITION 65
WARNING:
known to the state of California to cause cancer, birth defects
or other reproductive harm.
This product contains a chemical
2
• IMPORTANT SAFETY INSTRUCTIONS •
READ ALL INSTRUCTIONS BEFORE OPERATING
WARNING:
instructions must be 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.
• Read the instructions carefully. Be familiar with the controls and
proper use of the unit. Know how to stop the unit and disengage
the controls quickly.
• Stay alert. Do not operate this unit when tired, ill or under the
influence of alcohol, drugs or medication.
• Never allow children to operate the unit. Teens must be trained,
accompanied and supervised by an adult. Never allow adults to
operate the unit witho
• All guards and safety attachments must be installed properly
before operating the unit.
• Inspect the unit before use. Check for damaged parts. Check for
fuel leaks. Make sure all parts operate properly. Make sure all
fasteners are in place and secure. Make sure all moving parts are
properly aligned and are not bound. Replace parts that are cracked,
chipped, or damaged in any way.
orking parts repaired or replaced by an authorized service
w
center. Do not operate the unit with loose or damaged parts.
• Only use the trimming line described in the Specifications section
of this manual. Never use metal-reinforced line, wire, chain or
rope. These can break off and become dangerous projectiles.
• Do not replace the cutting head with rigid or metal blades.
o could result in serious injury.
s
• Be aware of risk of injury to the head, hands and feet.
• Carefully inspect the area before starting the unit. Remove
rocks, broken glass, nails, wire, string and other objects that
may be thrown or become entangled with the unit.
• 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 fro
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.
• Do not change the engine governor settings or overspeed the
engine.
• This unit is intended for occasional, household use only.
m thrown objects. Encourage bystanders to wear
ut pro
When using the unit, all safety
per instruction.
Have all damaged or improperly
Doing
SAFETY WARNINGS FOR GAS UNITS
WARNING:
its vapors can explode if ignited. Take the following
precautions:
• 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
tank. Never remove the fuel tank cap or add fuel when the
engine is hot. Always loosen the fuel tank cap slowly to relieve
any pressure in the tank before fueling.
• Always mix an
where there are no sparks or flames. DO NOT smoke.
• Never operate the unit without the fuel cap securely in place.
• Avoid creating a source of ignition for spilled fuel. Wipe up any
spilled fuel from the unit immediately, before starting the unit.
Move the unit at least 30 ft. (9.1 m) from the fueling source and
site before starting the engine. DO NOT
ever start or run the unit inside a closed room or building.
• N
Breathing exhaust fumes can kill. Operate this unit only in a wellventilated outdoor area.
d add fuel in a clean, well-ventilated outdoor are
Gasoline is highly flammable and
a
smoke.
WHILE OPERATING
• Wear safety glasses or goggles that meet current ANSI / ISEA
Z87.1 standards and are marked as such. Wear ear/hearing
protection when operating this unit. Wear a face mask 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 cut
t
extended and the proper line installed. Do not extend the
trimming line beyond the length of the shield.
• The cutting head should remain stationary when the engine
idles. If it does not, refer to Adjusting the Idle Speed.
• Adjust the handle to provide the best grip, if applicable.
• Make
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 and Stopping.
• Use the right tool. Only use this tool for its intended purpose.
Only use the u
• A
firm grip on both handles or grips.
• Do not overreach. Always keep proper footing and balance. Take
extra care when working on stairs, steep slopes or inclines. To
avoid serious injury, do not operate the unit while on a ladder or
a roof.
• Keep hands, face, and feet away from all moving parts. Do not
touch or try
• Do not touch the engine, gear housing or muffler. These parts get
extremely hot from operation, even after the unit is turned off.
• D
job. Do not run the unit at high speed when not in use.
• Do not force the unit. It will do a better, safer job when used at
the intended rate.
ting head shield must always be in place while operating
he unit. Do not operate the unit without both trimming lines
the cutting head is not in contact with anything
sure
nit as described in this manual.
lways hold the unit with both hands when operating. Keep a
to stop moving parts.
o not operate the unit faster than the speed needed to do the
3
• Always turn the unit off when operation is delayed or when
carrying the unit from one location to another. Make sure all
moving parts come to a complete stop.
• Before setting the unit down, always make sure the engine is off
a
nd all moving parts have stopped.
• If the unit strikes or becomes entangled with a foreign object,
stop the unit immediately. Check for damage. If damaged, do
not restart or operate the unit until it is repaired. Do not operate
the unit with loose or damaged parts.
• Turn the engine off and disconnect the spark plug for
maintenance or repair.
• Use only original equipment manufacturer (OEM) repl
arts and accessories for this unit. Use of any other parts or
p
accessories could lead to serious injury to the user, or damage
to the unit, and void the warranty.
• Keep the unit clean. Carefully remove vegetation and other
debris that could block moving parts.
• 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.
f the unit starts to vibrate abnormally, stop the unit immediately.
• I
Inspect the unit for the cause of the vibration. Vibration is
generally an indicator of trouble.
acement
OTHER SAFETY WARNINGS
• Maintain the unit with care. Follow all maintenance instructions
in this manual.
• Do not perform maintenance procedures other than those
described in this manual. All service, other than the maintenance
procedures described in this manual, should be performed by a
Sears or other qualified service dealer.
• Never remove, modify or make inoperative any safety device
furnished with the
efore inspecting, maintaining, cleaning, storing, transporting or
• B
replacing any parts on the unit:
1. Stop the unit. Refer to Starting and Stopping.
2. Make sure all moving parts have stopped.
3. Allow the unit to cool.
4. Disconnect the spark plug wire.
• Secure the unit while transporting.
• Never store the unit with fuel in the tank, inside a building where
fumes may reach an open flame (pilot light
switches, electrical motors, etc.).
(
• Store the unit in a dry place, secured or at a height to prevent
unauthorized use or damage. Keep the unit out of the reach of
children.
• Never douse or squirt the unit with water or any other liquid.
Keep handles dry and clean (free from debris, oil and grease).
Clean the unit after each use. Refer to Cleaning and Storage. Do
not use solvents or st
• 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.
unit.
ng detergents.
ro
s, etc.) or sparks
SAVE THESE INSTRUCTIONS
4
• SAFETY & INTERNATIONAL SYMBOLS •
Min. 50 ft
15 m
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.
SYMBOLMEANINGSYMBOLMEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May be used in
conjunction with other symbols or pictographs.
• READ OPERATOR'S MANUAL
WARNING:
manual(s) and follow all warnings and safety
instructions. Failure to do so can result in serious
injury to the operator and/or bystanders.
• WEAR EYE AND HEARING PROTECTION
Read the operator’s
WARNING:Thrown objects and loud
noise can cause severe eye injury and hearing loss.
Wear eye protection meeting current ANSI / ISEA
Z87.1 standards and ear protection when operating
this unit. Use a full face shield when needed.
• WEAR FOOT PROTECTION
Always wear heavy-duty, non-slip footwear when
operating this unit.
• WEAR HAND PROTECTION
Always wear heavy-duty, non-slip gloves when
handling this unit.
• HANDLE POSITION
Make sure the handle is positioned beyond the end of
the safety label.
• UNLEADED FUEL
Always use clean, fresh unleaded fuel.
• OIL
Refer to operator’s manual for the proper type of oil.
• DO NOT USE E85 FUEL IN THIS UNIT
WARNING:
containing greater than 10% ethanol will likely
damage this engine and void the warranty.
It has been proven that fuel
• ON/OFF STOP CONTROL
ON / START / RUN
• ON/OFF STOP CONTROL
OFF or STOP
• PRIMER BULB
Push primer bulb, fully and slowly, 10 times.
• CHOKE CONTROL
• START choke position
• RUN choke position
• THROWN OBJECTS CAN CAUSE SEVERE INJURY
WARNING:
propelled at high speed, causing injury.
• KEEP BYSTANDERS AWAY
WARNING:
especially children and pets, at least 50 feet (15 m)
from the operating area.
• HOT SURFACE
Small objects can be
Keep all bystanders,
WARNING:Do not touch a hot muffler
or cylinder. You may get burned. These parts get
extremely hot from operation. When turned off, they
remain hot for a short time.
• SHARP BLADE
WARNING:
the cutting head shield. To prevent serious injury, do
not touch the line cutting blade.
• DO NOT USE METAL BLADES
There is a sharp blade on
WARNING:To prevent serious injury, do
not replace the cutting head with rigid or metal blades.
5
KNOW YOUR UNIT
Model No. 316.74087*
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds
• Edging
• Decorative trimming around trees, fences, etc.
Other optional attachments may be used with this unit.
ASSEMBLY TOOLS REQUIRED
• Flat-head or T-20 Torx® Screwdriver
Lower Shaft
Housing
Handle
Coupler
Cutting Head
Shield
On/Off Switch
Throttle
Lockout
Muffler
Shaft Grip
Throttle Control
Upper Shaft
Housing
Air Filter Cover
Choke Lever
Spark Plug
Starter
Rope Grip
Fuel Cap
Cutting Head
Primer Bulb
Hanger Cap
Line Cutting Blade
6
Model No. 316.74080*
Spark Plug
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds
• Edging
• Decorative trimming around trees, fences, etc.
Other optional attachments may be used with this unit.
0.110 in. (2.79 mm) Medium or 0.130 in. (3.30 mm) Large
All specifications 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.
7
ASSEMBLY
INSTALLING THE CUTTING HEAD SHIELD
MODEL NO. 316.74087*
WARNING:
operate the unit without the cutting head shield in place.
1. Remove the wing nut and washer from the cutting head shield.
2. Insert the short tab (the one without a hole) on the mount
bracket into the slot on the cutting head shield (Fig. 1).
3. Rotate the cutting head shield counterclockwise to align the hole
on the cutting head shield with the hole on the mount bracket
(Fig. 1).
4. Insert the square bolt int
shield (Fig. 2). Push the square bolt through the cutting head
shield and mount bracket.
5. Place the washer onto the square bolt (Fig. 2).
6. Screw the wing nut onto the square bolt until the cutting head
shield is firmly in place (Fig. 2).
To prevent serious personal injury, never
o the hole undern
eath the cutting head
Cutting Head
Shield
Cutting Head
Shield
Fig. 1
Slot
Mount Bracket
Mount Bracket
Wing Nut
INSTALLING THE CUTTING HEAD SHIELD
MODEL NO. 316.74080*
WARNING:
operate the unit without the cutting head shield in place.
1. Remove the wing nut and washer from the cutting head shield.
2. Insert the short tab (the one without a hole) on the mount
bracket into the slot on the cutting head shield (Fig. 3).
3. Rotate the cutting head shield until the bolt on the cutting head
shield protrudes through the hole on the mount bracket (Fig. 3).
4. Place the washer onto the
. Screw the wing nut onto the bolt until the cutting head shield is
5
firmly in place (Fig. 4).
To prevent serious personal injury, never
bolt (Fig. 4).
Square Bolt
Bolt
Cutting Head
Shield
Hole
Washer
Fig. 2
Mount Bracket
Tab
Slot
Fig. 3
Bolt
Fig. 4
Wing Nut
Washer
8
INSTALLING AND ADJUSTING THE HANDLE
Installing the Handle
1. Place a ball half on each side of the upper shaft housing (Fig. 5).
Align each tab with its corresponding slot on the opposite ball
half (Fig. 5). Hold the two halves together. Make sure the ball is
positioned beyond the end of the safety label (Fig. 5).
2. Carefully push the rear handle bracket onto the upper shaft
housing (Fig. 6). Make sure th
the ball and the shaft grip (Fig. 6).
3. Push the rear handle bracket onto the back of the ball and hold
it in place (Fig. 7).
4. Carefully maneuver the front handle bracket over the coupler
and push it onto the front of the ball (Fig. 7). Hold the front and
rear handle brackets together.
5. Insert a nut into one of the hexagonal recesses in the back of
the rear handle bracke
t (Fig. 8). Make sure
nut faces outward. Hold the nut in place with a finger. Insert a
bolt into the corresponding hole in the front handle bracket (Fig.
8). Tighten the bolt with a flat-head or T20 Torx® screwdriver.
Repeat this step until all four (4) bolts are securely installed.
6. Push the latch pin completely into the small hook on the handle
(Fig. 9). Lift the latch lever up
(Fig. 9). Push the latch loop over the large hook (Fig. 9).
7. Hold the unit in the operating position (Fig. 18). Move the handle
up or down the upper shaft housing to a comfortable location
(Fig. 10). Make sure the handle is positioned beyond the end of
the safety label (Fig. 10).
8. Tilt the handle to the desired position.
9. Flip the latch lever down to secure the handle.
Adjusting the Handle
f the handle requires adjustment:
I
1. Flip the latch lever up to loosen the handle (Fig. 10).
2. Hold the unit in the operating position (Fig. 18). Move the handle
up or down the upper shaft housing to a comfortable location
(Fig. 10). Make sure the handle is positioned beyond the end of
the safety label (Fig. 10).
3. Tilt the handle to the desired position.
4. Flip the latch lever down
to secure
ar handle bracket is between
e re
the round side of the
and push it toward
the large hook
the handle.
Upper Shaft
Housing
Upper Shaft
Housing
Front
Handle
Bracket
Coupler
Ball Half
Slot
Tab
Safety
Label
Ball Half
Fig. 5
Ball
Shaft Grip
Rear
Handle
Bracket
Fig. 6
Ball
Rear
Handle
Bracket
Fig. 7
Nut (x4)
Bolt (x4)
Fig. 8
9
Small
Hook
Large
Hook
Handle
Latch Loop
Latch
Lever
Latch Pin
Fig. 9
Upper Shaft
Housing
Safety Label
Latch Lever
Fig. 10
10
INSTALLING AND REMOVING THE ATTACHMENT
The coupler enables the use of various optional attachments.
WARNING:
Before 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 an attachment.
Installing the Attachment
1. Remove the hanger cap from the attachment. Keep the hanger
cap for use when storing the attachment. If present, remove the
gray spacer from the coupler.
2. Set the unit on a flat, level surface.
3. Turn the knob counterclockwise to loosen the coupler (Fig. 11).
4. Align the releas
e button with the guide re
cess (Fig. 13).
5. Push the attachment straight into the coupler (Fig. 12) until the
release button snaps firmly into the primary hole (Fig. 13).
6. Turn the knob clockwise to tighten the coupler (Fig. 11).
WARNING:
Before operating the unit, make sure the
release button is fully snapped into the primary hole and the
knob is securely tightened.
WARNING:
Unless specified otherwise, the release
button should be snapped into the primary hole only. Using
the wrong hole could lead to personal injury or damage to
the unit.
Tighten
Coupler
Loosen
Knob
Fig. 11
Attachment
Fig. 12
Removing the Attachment
1. Set the unit on a flat, level surface.
2. Turn the knob counterclockwise to loosen the coupler (Fig. 11).
3. Press and hold the release button (Fig. 13)
. Pull the attachment straight out of the coupler (Fig. 12).
4
.
Primary Hole
Release Button
Guide Recess
Fig. 13
11
OIL AND FUEL
OIL AND FUEL MIXING INSTRUCTIONS
The use of old and/or improperly mixed fuel is the most common cause
of performance problems. Use only fresh, clean unleaded gasoline.
Follow the instructions carefully for the proper gasoline/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 a
eparate, forming acids when stored. ALWAYS use fresh fuel (less
s
than 30 days old).
NOTE: Dispose of old fuel according to federal, state and local
regulations.
Using Blended Fuels
If using a blended fuel:
• Always use the fresh fuel mix explained in this operator's manual
• Use the fuel additive STA-BIL® or an equivalent
• Always agitate the fuel mix before fueling
U
sing Fuel Additives
The container of 2-cycle oil provided with this unit includes a fuel
additive to help inhibit corrosion and minimize gum deposits.
Always use the brand of 2-cycle oil that came with this unit. If this is
unavailable, use a 2-cycle oil designed for air-cooled engines and
mix it with a fuel additive, such as STA-BIL Fuel Stabilizer or an
equivalent. Add 0.8 oz. (23 ml) of fuel additive per gallon of fuel,
a
ccording to the instructions on the container. NEVER add fuel
additives directly to the unit's fuel tank.
Mixing the Fuel
NOTE: This unit comes with a 3.2 oz. (95 ml) container of 2-cycle
oil. To obtain the correct fuel mixture described below, pour the
entire container into one gallon of unleaded gasoline.
s 1% water in the fuel can make fuel and oil
the unit
CAUTION:
been proven that fuel containing greater than 10% ethanol
will likely damage this engine and void the warranty.
DO NOT USE E85 FUEL IN THIS UNIT. It has
FUELING THE UNIT
WARNING:
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:
from fuel spray. Never operate the unit without the fuel cap
securely in place.
WARNING:
area. Wipe up any spilled fuel immediately. Avoid creating
a source of ignition for spilled fuel. Do not start the engine
until fuel vapors dissipate.
1. Position the unit with the fuel cap facing up.
2. Slowly remove the fuel cap.
3. Place the fuel container spout into the fuel tank fill hole and fill
the tank.
NOTE: Do not overfill the tank.
4. Wipe up any fuel that may have spilled.
5. Reinstall the fuel cap.
6. Move the unit at least 30 ft. (9.1 m) from the fuel container and
the fueling site before starting the engine.
Gasoline is extremely flammable. Ignited
Remove the fuel cap slowly to avoid injury
Add fuel in a clean, well-ventilated outdoor
CAUTION:
reliability, pay strict attention to the gasoline and oil mixing
instructions on the 2-cycle oil container. Using improperly
mixed fuel can severely damage the engine.
Thoroughly mix the proper ratio of unleaded gasoline with 2-cycle
eng
ine oil. Do not mix them dire
separate fuel can. Use a 40:1 gasoline/oil ratio. See the table below
for specific gasoline and oil mixing ratios.
Unleaded gasoline2-cycle oil
For proper engine operation and maximum
ctly in the unit’s fuel tank. Use a
1 gallon U.S.
(3.8 liters)
1 liter25 ml
MIXING RATIO - 40:1
3.2 fl. oz.
(95 ml)
12
STARTING AND STOPPING
WARNING:
Operate this unit only in a well-ventilated
outdoor area. Carbon monoxide exhaust fumes can be
lethal in a confined area.
WARNING:
Avoid accidentally starting the unit. To avoid
serious injury, the operator and the unit must be in a stable
position when pulling the starter rope (Fig. 16).
STARTING INSTRUCTIONS
1. Mix gasoline with oil. Refer to Oil and Fuel Mixing Instructions.
2. Fill the fuel tank. Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off switch is in
the On ( I ) position at all times (Fig. 14).
3. Slowly press and release the primer bulb 10 times (Fig. 15). If
fuel cannot be seen in the primer bulb, press and release the
primer bulb until fuel is vis
OTE: DO NOT squeeze the throttle control until step 8 (Fig. 14).
N
4. DO NOT squeeze the throttle control. Flip the choke lever
clockwise until it clicks into the START position (Fig. 15).
5. DO NOT squeeze the throttle control. Crouch in the starting
position (Fig. 16).
6. DO NOT squeeze the throttle control. Pull the starter rope with a
controlled and steady motion until the unit starts (Fig. 16).
NOTE: Th
is unit uses the INCREDI-PULL™ s
significantly reduces the effort required to start the engine.
7. DO NOT squeeze the throttle control. Idle the engine for 30
seconds.
8. Press and hold the throttle lockout (Fig. 14). Squeeze the throttle
control as needed for operation (Fig. 14).
NOTE: To prevent the throttle control from being squeezed
accidentally, this unit has a throttle lockout. The
cannot be squeezed unless the throttle lockout is also engaged.
ible.
tarting system, which
ttle control
thro
Throttle
Lockout
Throttle Control
Choke Lever
Primer Bulb
Starter Rope Grip
On/Off Switch
(I = On / O = Off)
Fig. 14
Fig. 15
Starting
Position
IF... the engine does not start after pulling the starter rope 10 times,
repeat the starting procedure, beginning with step 3.
IF... the engine is already warm: Press and hold the throttle lockout.
Squeeze and hold the throttle control. Pull the starter rope with a
controlled and steady motion until the unit starts.
STOPPING INSTRUCTIONS
1. Release the throttle control and allow the engine to idle.
2. Press and hold the On/Off switch in the Off (O) position until the
engine comes to a complete stop (Fig. 14).
Fig. 16
13
USING THE SPEED START™ ACCESSORY
This unit can be started with an optional Speed Start™ accessory
(items sold separately). Please refer to the Speed Start™ accessory
operator’s manual for the proper use of this feature.
Please contact your local Craftsman retailer, call 1-888-331-4569 or
visit www.craftsman.com for more information.
STARTING INSTRUCTIONS
1. Mix gasoline with oil. Refer to Oil and Fuel Mixing Instructions.
2. Fill the fuel tank. Refer to Fueling the Unit.
NOTE: There is no need to turn the unit on. The On/Off switch is in
the On ( I ) position at all times (Fig. 14).
3. Slowly press and release the primer bulb 10 times (Fig. 15). If
fuel cannot be seen in the primer bulb, press and release the
primer bulb until fuel is v
OTE: DO NOT squeeze the throttle control until step 8 (Fig. 14).
N
4. DO NOT squeeze the throttle control. Flip the choke lever
clockwise until it clicks into the START position (Fig. 15).
5. DO NOT squeeze the throttle control. Crouch in the starting
position (Fig. 16).
6. DO NOT squeeze the throttle control. Insert the Speed Start™
accessory into the Speed Start™ port (Fig. 17). Refer to the
Operation sec
anual.
m
7. DO NOT squeeze the throttle control. Run the Speed Start™
accessory in intervals no longer than 2 seconds each until the
unit starts.
8. DO NOT squeeze the throttle control. Remove the Speed
Start™ accessory from the unit.
9. DO NOT squeeze the throttle control. Idle the engine for 30
seconds.
10. Press and hold the throttle lockout (Fig. 14). Squeeze the
control as needed for operation (Fig. 14).
NOTE: To prevent the throttle control from being squeezed
accidentally, this unit has a throttle lockout. The throttle control
cannot be squeezed unless the throttle lockout is also engaged.
IF... the engine does not start after running the Speed Start™
accessory for 10 intervals, repeat the starting procedure,
beginning with step 3.
IF... the engine is alr
into the Speed Start™ port. Press and hold the throttle lockout.
Squeeze and hold the throttle control. Run the Speed Start™
accessory in intervals no longer than 2 seconds each until the
unit starts. Remove the Speed Start™ accessory from the unit.
eady warm: Insert the Speed Start™ accessory
STOPPING INSTRUCTIONS
1. Release the throttle control and allow the engine to idle.
2. Press and hold the On/Off switch in the Off (O) position until the
engine comes to a complete stop (Fig. 14).
14
HOLDING THE UNIT
OPERATION
WARNING:
body protection to reduce the risk of injury when operating
this unit.
WARNING:
contact with the engine while operating the unit. The
engine may be extremely hot.
• Stand in the operating position (Fig. 18). Stand up straight. Do
not bend over.
• Keep feet apart and firmly planted.
• Hold the shaft grip with the right hand. Keep the right arm
slightly bent.
• Hold the handle with the left hand. Keep the left arm straight.
• Hold the unit at waist level.
• Position the cutting head a few inches above the ground.
Always wear eye, hearing, hand, foot and
To prevent serious personal injury, avoid arm
ADJUSTING THE TRIMMING LINE LENGTH (BUMP HEAD)
The cutting head can be used as a bump head or as a fixed-line
head. When used as a bump head, trimming line can be released
from the cutting head without stopping the engine. Before doing so,
make sure the cutting head is loaded with line. Refer to Replacingthe Trimming Line (Bump Head) in the Maintenance section.
To release more line, lightly tap t
19) while operating the unit at high speed. For best results, tap the
bump knob on bare ground or hard soil. Attempting to release line in
tall grass may stall the engine.
OTE: Do not rest the cutting head on the ground while the unit is
N
running.
Each time the bump knob is tapped, about 1 inch (25.4 mm) of
trimming line is released.
NOTE: Always keep the trimming line full
becomes more difficult when the cutting line gets shorter.
A blade in the cutting head shield will cut the line to the proper
length if any excess line is released.
he bump knob on the ground (Fig.
y extended. Line re
lease
Fig. 18
Bump Knob
Fig. 19
WARNING:
assembly. Excessive line length will make the unit
overheat. This may lead to serious personal injury or
damage to the unit.
Do not remove or alter the line cutting blade
TIPS FOR BEST RESULTS
• MODEL NO. 316.74087*: To direct clippings away from the
operator, tilt the cutting head slightly down to the left; cut from
right to left whenever possible.
• MODEL NO. 316.74080*: To direct clippings away from the
operator, tilt the cutting head slightly down to the right; cut from
left to right whenever possible.
• Do not trim wet grass or weeds.
NOTE: Some line breakage will occur fro
ntanglement with foreign matter
• E
• Normal line fatigue
• Attempting to cut thick vegetation
• Forcing the line into objects such as walls or fence posts
m:
15
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