Troy-Bilt TB22 EC User Manual
769-10064 / 00 07/14
Electric Start Capable
2-Cycle Trimmer
TB22 EC
TABLE OF CONTENTS
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Oil and Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
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.
Copyright© 2014 MTD SOUTHWEST INC, All Rights Reserved.
SAVE THESE INSTRUCTIONS
SERVICE
DO NOT RETURN THIS UNIT TO THE RETAILER. PROOF OF
PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.
For assistance regarding the assembly, controls, operation or
maintenance of the unit, please call the Customer Support Department
at 1-800-828-5500 in the United States or 1-800-668-1238 in Canada.
Additional information about the unit can be found on our website:
www.troybilt.com (U.S.) or www.troybilt.ca (Canada).
For service, please call the Customer Support Department to obtain
a list of authorized service dealers near you. Service on this unit,
both within and after the warranty period, should only be performed
by an authorized and approved service dealer. When servicing, use
only identical replacement parts.
IMPORTANT: Read this manual thoroughly before using this product. Follow all instructions.
Operator’s Manual
• IMPORTANT SAFETY INSTRUCTIONS •
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
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, contact your local service dealer to install the
appropriate muffler assembly.
SYMBOL MEANING
WARNING:Signals a SERIOUS hazard.
Failure to obey a safety WARNING signal CAN result in
serious injury to yourself or to others.
CAUTION:Signals a MODERATE hazard.
Failure to obey a safety CAUTION signal MAY result in
property damage or injury to yourself or to others.
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.
DANGER:
Signals an EXTREME hazard.
Failure to obey a safety DANGER signal WILL result in
serious injury or death to yourself or to others.
2
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.
• 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.
• 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. Doing
so could result in serious injury.
WARNING:
When using the unit, all safety
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.
• 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 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.
• This unit is intended for occasional, household use only.
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.
CALIFORNIA PROPOSITION 65
WARNING:This product contains a chemical
known to the state of California to cause cancer, birth defects
or other reproductive harm.
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
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 and add fuel in a clean, well-ventilated outdoor area
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 smoke.
• Never start or run the unit inside a closed room or building.
Breathing exhaust fumes can kill. Operate this unit only in a well
ventilated outdoor area.
WARNING:Gasoline is highly flammable and
its vapors can explode if ignited. Take the following
precautions:
3
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 cutting head shield must always be in place while operating
the unit. Do not operate the 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 head remains stationary when
the engine is idling. If it does not, take the unit to an authorized
service dealer for an adjustment.
• Adjust the handle to provide the best grip, if applicable.
• Make sure the 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 and Stopping.
• 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.
• 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 to stop moving parts.
• 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 unit faster than the speed needed to do the 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.
• Always stop the unit when operation is delayed or when walking
from one location to another.
• If you strike or become entangled with a foreign object, stop the
unit immediately and check for damage. Do not operate the unit
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 original equipment manufacturer (OEM) replacement
parts and accessories for this unit. These are available from your
authorized service dealer. Use of any other parts or 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.
• If the unit starts to vibrate abnormally, stop the unit immediately.
Inspect the unit for the cause of the vibration. Vibration is
generally an indicator of trouble.
OTHER SAFETY WARNINGS
• Maintain the unit with care.
• All service, other than the maintenance procedures described in
this manual, should be performed by an authorized service dealer.
• Never remove, modify or make inoperative any safety device
furnished with the unit.
• Before inspecting, servicing, cleaning, storing, transporting or
replacing any parts on the unit:
1. Stop the unit.
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 lights, etc.) or sparks
(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 strong detergents.
• 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
• SAFETY & INTERNATIONAL SYMBOLS •
This operator's manual describes safety and international symbols and pictographs that may appear on this product. Read the operator's
manual for complete safety, assembly, operating and maintenance and repair information.
SYMBOL MEANING SYMBOL MEANING
• SAFETY ALERT SYMBOL
Indicates danger, warning or caution. May be used in
conjunction with other symbols or pictographs.
• 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.
• WEAR EYE AND HEARING PROTECTION
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.
• 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:It has been proven that fuel
containing greater than 10% ethanol will likely
damage this engine and void the warranty.
• 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
1. • FULL choke position
2. • PARTIAL choke position
3. • RUN choke position
• THROWN OBJECTS AND ROTATING CUTTER CAN
CAUSE SEVERE INJURY
WARNING:
Small objects can be
propelled at high speed, causing injury. Keep away
from the rotating rotor.
• KEEP BYSTANDERS AWAY
WARNING:
Keep all bystanders,
especially children and pets, at least 50 feet (15 m)
from the operating area.
• HOT SURFACE
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:Sharp blade on trimmer
attachment shield. To prevent serious injury, do not
touch the line cutting blade.
4
Cutting Head Shield
Fuel Cap
Handle
Cutting Head
Shaft Grip
Shaft Housing
Starter Rope Grip
Throttle
Control
Spark Plug
Muffler
On/Off Switch
Primer Bulb
Line Cutting Blade
Choke Lever
Air Filter
Cover
Coupler
5
KNOW YOUR UNIT
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds.
• Edging
• Decorative trimming around trees, fences, etc.
Other optional accessories may be used with this unit.
SPECIFICATIONS*
* 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.
Engine Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Air-Cooled, 2-Cycle
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 cc (1.52 cu. in.)
Spark Plug Gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.025 in. (0.635 mm)
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Champion® RDJ7J or equivalent plug
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel/Oil Mixture
Fuel/Oil Ratio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40:1
Fuel Tank Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 oz. (296 ml)
Approximate Unit Weight (No fuel). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 12 lbs. (5 - 5.4 kg)
Trimmer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Head
Trimming Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.095 inches (2.41 mm)
Cutting Path Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 in. (43.2 cm)
ASSEMBLY TOOLS REQUIRED:
• 3/8” Socket
ASSEMBLY
6
INSTALLING AND ADJUSTING THE HANDLE
Installing the Handle
1. Push the handle down onto the shaft housing (Fig. 3). The bolt
hole in the handle should be to the right.
2. Insert the bolt into the bolt hole and push it through (Fig. 3).
Tighten the bolt with a 3/ 8” socket, but do not tighten the bolt
completely .
3. While holding the unit in the operating position (Fig. 11), move
the handle to the location that provides the best grip. Place it a
minimum of 6 inches (15.24 cm) from the end of the shaft grip
(Fig. 3).
4. Tighten the bolt with a 3/ 8” socket until the handle is secure.
Adjusting the Handle
If the handle requires adjustment:
1. Loosen the bolt with a 3/ 8” socket (Fig. 3).
2. While holding the unit in the operating position (Fig. 11), move
the handle to the location that provides the best grip. Place it a
minimum of 6 inches (15.24 cm) from the end of the shaft grip
(Fig. 3).
3. Tighten the bolt with a 3/ 8” socket until the handle is secure.
Fig. 3
Bolt
Shaft Grip
Minimum 6 in.
(15.24 cm)
Handle
Shaft
Housing
INSTALLING THE CUTTING HEAD SHIELD
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 into the hole underneath the cutting head
shield (Fig. 2). Push the square bolt through the cutting head
shield and mount bracket.
5. Put 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).
Fig. 1
Mount Bracket
Cutting Head
Shield
WARNING:
To prevent serious personal injury, never
operate the unit without the cutting head shield in place.
Fig. 2
Washer
Square Bolt
Slot
Wing Nut
Cutting Head
Shield
Mount Bracket
7
Fig. 4
Knob
Tighten
Loosen
Fig. 6
Fig. 5
Coupler
Attachment
Release Button
Guide Recess
Primary Hole
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.
OPERATING THE COUPLER
The coupler enables the use of various optional attachments.
Installing the Attachment
1. Remove the cap from 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. 4).
4. Align the release button with the guide recess (Fig. 6).
5. Push the attachment straight into the coupler (Fig. 5) until the
release button snaps firmly into the primary hole (Fig.6).
6. Turn the knob clockwise to tighten the coupler (Fig. 4).
Removing the Attachment
1. Set the unit on a flat, level surface.
2. Turn the knob counterclockwise to loosen the coupler (Fig. 4).
3. Press and hold the release button (Fig. 6).
4. Pull the attachment straight out of the coupler (Fig. 5).
CAUTION:
Before operating the unit, make sure the
release button is fully snapped into the primary hole and the
knob is securely tightened.
CAUTION:
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.
8
OIL AND FUEL
FUELING THE UNIT
1. Position the unit with the fuel cap facing up.
2. Remove the fuel cap.
3. Place the fuel container spout into the fill hole on the fuel tank
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.
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 as 1% water in the fuel can make fuel and oil
separate, forming acids when stored. ALWAYS use fresh fuel (less
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 your operator's manual
• Use the fuel additive STA-BIL® or an equivalent
• Always agitate the fuel mix before fueling the unit
• Drain the tank and run the engine dry before storing the unit
Using Fuel Additives
The bottle of 2-cycle oil provided with this unit contains 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,
according 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) bottle of 2-cycle oil. To
obtain the correct fuel mixture described below, pour the entire
bottle into one gallon of unleaded gasoline.
Thoroughly mix the proper ratio of unleaded gasoline with 2-cycle
engine oil. Do not mix them directly in the unit’s fuel tank. Use a
separate fuel can. Use a 40:1 gasoline/oil ratio. See the table below
for specific gasoline and oil mixing ratios.
Unleaded gasoline 2-cycle oil
1 gallon U.S.
(3.8 liters)
3.2 fl. oz.
(95 ml)
1 liter 25 ml
MIXING RATIO - 40:1
CAUTION:
For proper engine operation and maximum
reliability, pay strict attention to the gasoline and oil mixing
instructions on the 2-cycle oil bottle. Using improperly
mixed fuel can severely damage the engine.
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:
Remove the fuel cap slowly to avoid injury
from fuel spray. Never operate the unit without the fuel cap
securely in place.
WARNING:
Add fuel in a clean, well ventilated outdoor
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.
WARNING:
DO NOT USE E85 FUEL IN THIS UNIT. It
has been proven that fuel containing greater than 10%
ethanol will likely damage this engine and void the warranty.
9
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. 9).
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. 7).
3. Slowly press and release the primer bulb 10 times (Fig. 8). If fuel
cannot be seen in the primer bulb, press and release the primer
bulb until fuel is visible.
4. Move the choke lever to Position 1 (Fig. 8).
5. Crouch in the starting position (Fig. 9).
NOTE: SQUEEZE and HOLD the throttle control for ALL further steps.
6. Squeeze the throttle control (Fig. 7) and pull the starter rope with
a controlled and steady motion 5 times (Fig. 9).
7. Continue to squeeze the throttle control. Move the choke lever
to Position 2 (Fig. 8).
8. Continue to squeeze the throttle control. Pull the starter rope with
a controlled and steady motion 3 to 5 times to start the engine.
9. Continue to squeeze the throttle control. Allow the engine to
warm up for 30 to 60 seconds.
10. Continue to squeeze the throttle control. Move the choke lever
to Position 3 (Fig. 8) and continue warming the engine for an
additional 60 seconds. The unit may be used during this time.
NOTE: The engine is properly warmed up when it accelerates
without hesitation.
IF... the engine hesitates, return the choke lever to Position 2 (Fig. 8)
and continue the warm-up.
IF... the engine does not start, begin the starting procedure with
step 3.
IF... the engine fails to start after a few attempts, move the choke
lever to Position 3 and squeeze the throttle control. Pull the
starter rope with a controlled and steady motion 3 to 8 times.
The engine should start. If it does not, repeat this instruction.
IF... the engine is already warm, begin the starting procedure with
step 7.
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. 7).
Fig. 7
Fig. 9
On ( I ) / Start
Off (O) / Stop
Throttle Control
Starting
Position
Throttle Control
Starter Rope Grip
Fig. 8
Primer Bulb
Position 3Position 2
Position 1
Choke Lever
10
USING THE ELECTRIC START ACCESSORY
This unit can be started with an optional electric start accessory
(items sold separately). Refer to the electric start accessory
operator’s manual for the proper use of this feature.
Please contact your local retailer, call the Customer Support
Department or visit our website for more information.
Item No. Description
49M2027P966 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Electric Starter
49MESCBP966 . . . . . . . . . . . . . . . . . . . . . . . . . . . .Engine Starter Bit
49MRBESY966 . . . . . . . . . . . . . . . . . . . . . .Cordless Electric Starter
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. 7).
3. Slowly press and release the primer bulb 10 times (Fig. 8). If fuel
cannot be seen in the primer bulb, press and release the primer
bulb until fuel is visible.
4. Move the choke lever to Position 1 (Fig. 8).
5. Crouch in the starting position (Fig. 9).
6. Insert the electric start accessory into the electric start port (Fig. 10).
Refer to the Operation section of the electric start accessory
operator’s manual.
NOTE: SQUEEZE and HOLD the throttle control for ALL further steps.
7. Squeeze and hold the throttle control (Fig. 7). Run the electric
start accessory for 2 seconds.
8. Continue to squeeze the throttle control. Move the choke lever
to Position 2 (Fig. 8).
9. Continue to squeeze the throttle control. Run the electric start
accessory in intervals no longer than 2 seconds each until the
unit starts.
10. Remove the electric start accessory from the unit.
11. Continue to squeeze the throttle control. Allow the engine to
warm up for 30 to 60 seconds.
12. Continue to squeeze the throttle control. Move the choke lever
to Position 3 (Fig. 8) and continue warming the engine for an
additional 60 seconds. The unit may be used during this time.
NOTE: The engine is properly warmed up when it accelerates
without hesitation.
IF... the engine hesitates, return the choke lever to Position 2 (Fig. 8)
and continue the warm-up.
IF... the engine does not start, begin the starting procedure with
step 3.
IF... the engine fails to start after a few attempts, move the choke
lever to Position 3 and squeeze the throttle control. Run the
electric start accessory in intervals no longer than 2 seconds
each until the unit starts. The engine should start. If it does not,
repeat this instruction.
IF... the engine is already warm, begin the starting procedure with
step 8.
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. 7).
Fig. 10
Electric Start
Port
11
OPERATION
HOLDING THE UNIT
• Stand in the operating position (Fig. 11). 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.
WARNING:
Always wear eye, hearing, hand, foot and
body protection to reduce the risk of injury when operating
this unit.
TIPS FOR BEST RESULTS
• To direct clippings away from the operator, tilt the cutting head
slightly down to the left; cut from right to left whenever possible.
• Do not trim wet grass or weeds.
NOTE: Some line breakage will occur from:
• Entanglement with foreign matter
• Normal line fatigue
• Attempting to cut thick vegetation
• Forcing the line into objects such as walls or fence posts
Fig. 11
ADJUSTING THE TRIMMING LINE LENGTH
This unit is equipped with a bump head. Trimming line can be
released from the cutting head without stopping the engine.
To release more line, lightly tap the bump knob on the ground (Fig. 12)
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.
NOTE: Do not rest the cutting head on the ground while the unit is
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 fully extended. Line release
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.
CAUTION:
Do not remove or alter the line cutting blade
assembly. Excessive line length will make the unit
overheat. This may lead to serious personal injury or
damage to the unit.
WARNING:
To prevent serious personal injury, avoid arm
contact with the engine while operating the unit. The
engine may be extremely hot.
Fig. 12
Bump Knob
12
DECORATIVE TRIMMING
When trimming around trees, posts, fences, etc., rotate the whole
unit so that the cutting head is at a 30° angle to the ground (Fig. 13).
EDGING
The trimmer attachment can be used for edging (Fig. 14).
Alternatively, bladed lawn edger attachments can also be purchased
for use with this unit.
Rotating the Trimmer Attachment
When edging around sidewalks, flowerbeds, etc., rotate the trimmer
attachment 90° inside the coupler. DO NOT rotate the entire unit 90°.
1. Turn the knob counterclockwise to loosen the coupler (Fig. 4).
Refer to Operating the Coupler in the Assembly section.
2. Press and hold the release button (Fig. 6).
3. Rotate the attachment until the release button snaps firmly into
the 90° edging hole (Fig. 15).
4. Turn the knob clockwise to tighten the coupler (Fig. 4).
Maintaining the Trimming Line
Hard surfaces, such as sidewalks, can cause the trimming line to
wear down quickly or break.
• Frequently check and adjust the trimming line length. Refer to
Adjusting the Trimming Line Length. Always keep the trimming
line fully extended.
• DO NOT force the unit. Make shallow cuts in as many passes as are
necessary to achieve the desired depth. Cut at a slow, even pace.
Fig. 14
CAUTION:
Only snap the release button into the 90°
edging hole when edging with the trimmer attachment.
Using the 90° edging hole with other attachments could
lead to personal injury or damage to the unit.
WARNING:
To avoid serious personal injury and
damage to the unit, shut the unit off before rotating the
attachment.
Fig. 15
Release Button
90˚ Edging Hole
Fig. 13
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