Operator's
Manual
Since it began making garden tools in
1850,Bolens has been known for long-
lasting, dependable products. Bolens
eventually carried that hard-working
heritage into the outdoor power
equipment industry, when it designed
and built the first-ever power-driven
garden tractor.
Today,homeowners around the country rely
on Bolens for durable, reliable power
equipment at an affordable price.
2-Cycle Petrol
Trimmer/Brushcutter
ModelBL250
INTRODUCTION
THANKYOU
Thank you for buying this quality product. This modern
outdoor power tool will provide many hours of useful service.
You will find it to be a great labor-saving device. This
operator's manual provides you with easy-to-understand
operating instructions. Read the whole manual and follow all
the instructions to keep your new outdoor power tool in top
operating condition.
PRODUCT REFERENCES, ILLUSTRATIONS AND
SPECIFICATIONS
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.
Bump Head TMis a trademark of MTD SOUTHWEST INC.
SplitLine TMis a trademark of MTD SOUTHWEST INC.
Copyright 02003 MTD SOUTHWEST INC, All Rights Reserved.
SERVICE INFORMATION
Service on this unit both within and after the warranty period
should be performed only by an authorized and approved
service dealer.
DO NOT RETURN THE UNITTO THE RETAILER. PROOF OF
PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.
Before beginning, locate the unit's model plate. It lists the
model and serial numbers of your unit. Referto the sample plate
below and copy the information for future reference.
TABLE OF CONTENTS
Service Information ................................... 2
Rules for Safe Operation ............................... 3
Know Your Unit ....................................... 6
Assembly Instructions ................................. 7
Oil and Petrol Information ............................ I0
Starting/Stopping Instructions ....................... 11
Operating Instructions ............................... 12
Maintenance and Repair Instructions ................. 14
Cleaning and Storage ................................ 19
Accessories and Replacement Parts ................... 19
Troubleshooting Chart ............................... 20
Specifications ........................................ 21
Warranty Information ................................ 24
Parts List .............................. Inside Back Cover
CONTENTS OF CARTON
• Model BL250Trimmer/Brushcutter
A Large Bump Head Cutting Attachment
A 4-Tooth Brush Blade
A Bull Handle and Hardware
• Cutting Attachment Shield with Hardware
• Shoulder Harness
• Locking Rod Tool
• Operator's Manual
• Product Warranty Card
Copy the model I parent part
number here:
Copy the serial number here:
Make sureyou carefully read and understand this manual before
starting or operating this equipment.
THISPRODUCTISCOVEREDBYONEORMOREU.S.PATENTS.
OTHERPATENTSPENDING.
A This item will either be installed on the unit or in the
hardware pack
Examine all parts to make certain that nothing is missing and
no breakage has occurred during shipping. Any damaged or
missing part must be replaced before using this product.
CALIFORNIA PROPOSITION 65 WARNING
THE ENGINE EXHAUST FROM THIS PRODUCT
CONTAINS CHEMICALS KNOWN TO THE STATE
OF CALIFORNIA TO CAUSE CANCER, BIRTH
DEFECTS, OR OTHER REPRODUCTIVE HARM.
2
RULES FOR SAFE OPERATION
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 com-
bustion engines operated on forest brush and/or grass-covered areas be equipped with a spark arrestor, maintained in effective
working order, or the engine be constructed, equipped, and maintained for the prevention of fire. Check with your state or local
authorities for regulations pertaining to these requirements. Failure to follow these requirements could subject you to liability or a
fine. This unit is factory equipped with a spark arrestor. If it requires replacement, ask your LOCAL SERVICE DEALER to install
the Accessory Part #182747 Spark Arrestor.
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.
° SAFETY SYMBOLS •
The purpose of safety symbols isto attract your attention to possible dangers. The safety symbols, and their explanations, deserve
your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper accident prevention measures.
SYMBOL MEANING
SAFETYALERT SYMBOL: Indicates danger, warn-
ing or caution. Attention is required in order to
avoid serious personal injury. May be used in
conjunction with other symbols or pictographs.
SYMBOL MEANING
WARNING: Failure to obey a safety warning can
result in injury to yourself and others. Always fol-
low the safety precautions to reduce the risk of
fire, electric shock, and personal injury.
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.
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.
NOTE: Advises you of information or instructions vital to the operation or maintenance of the equipment.
° IMPORTANT SAFETY INFORMATION •
READ ALL INSTRUCTIONS
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.
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 influ-
ence of alcohol, drugs or medication.
• Children under the age of 15 must not use the unit; teens
may operate the unit with adult guidance.
• Inspect the unit before use. Replace damaged parts. Check
for petrol leaks. Make sure all fasteners are in place and
secure. Replace cutting attachment parts that are cracked,
chipped or damaged in any way. Make sure the cutting
attachment is properly installed and securely fastened. Be
sure that the cutting attachment shield is properly
attached, and positioned as recommended. Failure to do so
can result in personal injury to the operator and
bystanders, as well asdamage to the unit.
• Use only a 2.41 mm (O.095-inch) diameter original equuip-
ment manufacturer replacement line. Never use metal-rein-
forced line, wire, chain or rope. These can break off and
become dangerous projectiles.
• Be aware of risk of injury to the head, hands and feet.
• Squeeze the throttle control and check that it returns auto-
matically to the idle position. Make all adjustments or
repairs before using the unit.
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 attach-
ment. Clear the area of children, bystanders and pets; keep
them outside a 15 m (50-foot) 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.
SAFETY WARNINGS FOR PETROL TRIMMERS
WARNING: Petrol is highly flammable and its
vapors can explode if ignited. Follow the ensu-
ing precautions.
• Store petrol 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 petrol tank. Never remove the petrol tank cap or add
petrol when the engine is hot. Never operate the unit with-
out the petrol cap securely in place. Loosen the petrol tank
cap slowly to relieve any pressure in the tank.
• Add petrol in a clean, well-ventilated outdoor area where
there are no sparks or flames. Remove the petrol cap slow-
ly, and only after the engine stops. Do not smoke while
fueling or mixing petrol. Wipe up any spilled petrol from
the unit immediately.
• Avoid creating a source of ignition for spilled petrol. Do not
start the engine until petrol vapors dissipate.
3
RULES FOR SAFE OPERATION
° IMPORTANT SAFETY INFORMATION •
Move the unit at least 9.1 m (30 feet) from the fueling
source and site before starting the engine. Do not smoke.
Keep sparks and open flames away from the area while
adding petrol or operating the unit.
WHILE OPERATING
• Never start or run the unit inside a closed room or building.
Breathing exhaust fumes can be fatal. Operate this unit
only in a well-ventilated outdoor area.
• Wear safety glasses or goggles that meet ANSI Z87.1 stan-
dards 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, san-
dals or go barefoot. Secure hair above shoulder level.
• The cutting attachment shield must always be in place while
operating the unit. Do not operate unit without both trim-
ming 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 sta-
tionary when the engine is idling. If it does not, have the
unit adjusted by an authorized service technician.
• Adjust the handle to your size in order to provide the best
grip.
• Be sure the cutting attachment is not in contact with any-
thing before starting the unit.
• Use the unit only in daylight or good artificial light.
• Avoid accidental starting. Be in the starting position when-
ever pulling the starter rope. Both the operator and unit
must be in a stable position while starting. Refer to the
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.
• Keep 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.
• 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 original equipment manufacturer replacement
parts and accessories for this unit. These are available from
your authorized service dealer. Use of any non-original fac-
tory parts or accessories could lead to serious injury to the
user, or damage to the unit, and 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.
WHILE OPERATING WITH CUTTING BLADE
• Read and understand all safety warnings before operating
this unit.
• Always use the shoulder harness when using the brush
blade accessory.
• Keep the handle between the operator and cutting attach-
ment or blade at all times.
• NEVER cut when the cutting blade is 76 cm (30 inches) or
more above the ground level.
• Blade thrust may occur when the spinning blade contacts
an object that it does not immediately cut. Blade thrust can
be violent enough to propel the unit and/or operator in
any direction, possibly causing a loss of control. Blade
thrust can occur without warning if the blade snags, stalls
or binds. This is more likely to occur in areas where it is dif-
ficult to see the material being cut.
• For operation with the brush blade, do not cut anything thick-
er than 13 mm (1/2 inch) or a violent kickback could occur.
• Do not attempt to touch or stop the blade when it is rotating.
• A coasting blade can cause injury while it continues to spin
after the engine is stopped or the throttle trigger is
released. Maintain proper control until the blade has com-
pletely stopped rotating.
• Do not run the unit at high speed when not cutting.
• If you strike or become entangled with a foreign object, stop
the engine immediately and check for damage. Have any
damage repaired before attempting further operations. Do
not operate unit with a bent, cracked or dull blade. Discard
blades that are bent, warped, cracked or broken.
• Do not sharpen the cutting blade. Sharpening the blade
can cause the blade tip to break off while in use. This can
result in severe personal injury. Replace the blade.
• Do not use the cutting blade for edging or as an edger; severe
personal injury to yourself or others may incur. Use the cutting
blade only for the purpose as described in this manual.
• Stop the engine IMMEDIATELY if you feel excessive vibra-
tion. Vibration is a sign of trouble. Inspect thoroughly for
loose nuts, bolts or damage before continuing. Repair or
replace affected parts as necessary.
After Use
• Clean cutting blades with a household cleaner to remove any
gum buildup. Oil the blade with machine oil to prevent rust.
• Lock up and store the cutting blade in an appropriate area
to protect the blade from unauthorized use or damage.
OTHER SAFETY WARNINGS
• Never store a fueled unit inside a building where fumes
may reach an open flame or spark.
• Allow the engine to cool before storing or transporting. Be
sure to secure the unit while transporting.
• Store the unit in a dry area, locked up or up high to prevent
unauthorized use or damage, out of the reach of children.
• Never douse or squirt the unit with water or any other liq-
uid. 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
4
RULES FOR SAFE OPERATION
SAFETY AND INTERNATIONAL SYMBOLS
Thisoperator's manual describes safety and international symbols and pictographs that may appear on this product.
Readthe 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.
WARNING - READ OPERATOR'S
MANUAL
Read the operator's manual(s) and follow
all warnings and safety instructions.
Failure to do so can result in serious
injury to the operator and/or bystanders.
WEAR EYE AND HEARING
PROTECTION
WARNING: Thrown objects and loud
noise can cause severe eye injury and
hearing loss. Wear eye protection
meeting ANSI Z87.1 standards and ear
protection when operating this unit. Use
a full face shield when needed.
KEEP BYSTANDERS AWAY
WARNING: Keep all bystanders,
especially children and pets, at least 15 m
(50 feet) from the operating area.
A B
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 isturned off.
SHARP BLADE
WARNING: Sharp blade on cutting
attachment shield. To prevent serious
injury, do not touch line cutting blade.
• CHOKE CONTROL
c
A • FULL choke position
B • PARTIAL choke position
C • RUN position
I
0
• UNLEADED PETROL
Always useclean, fresh unleaded petrol.
• OIL
Refer to operator's manual for the proper
type of oil.
° ON/OFF STOP CONTROL
ON / START/RUN
• ON/OFF STOP CONTROL
OFFor STOP
BRUSHCUTTERS • REPLACE DULL
BLADES
Do not sharpen the cutting blade.
Sharpening the blade can cause the
blade tip to break off while in use. This
can result in severe personal injury.
TRIMMER/BRUSHCUTTER SAFETY
WARNING: Thrown objects and rotating
cutter can cause severe injury. Keep
bystanders, especially children and pets,
at least 15 m (50 feet) away from the
cutting area. The cutting attachment
shield must be used when using the
trimmer cutting attachment.
@
5
RULES FOR SAFE OPERATION
KNOW YOUR UNIT
Applications
As a trimmer:
• Cutting grass and light weeds
• Edging
• Decorative trimming around trees, fences, etc.
On/Off Stop Control
Throttle Control Support Fitting
As a brushcutter:
• Cutting weeds and light bush of up to 13 mm (I/2 inch)
in diameter
Petrol Cap
Starter Rope Grip
Hip Pad
Gear Housing
Foot Stand
Blade Shield 1
Shield Mount
Handlebar
Choke Lever
Cutting Blade
Shaft
Housing
Cutting Attachment Shield
Primer Bulb
Cutting
Line Cutting Blade
Muffler
Spark Plug
Air Filter/Muffler
Cover
6
ASSEMBLY INSTRUCTIONS
INSTALL AND ADJUST THE HANDLE
1. Place the handlebar between the top and middle clamp
pieces (Fig. 1).
...........(4) Screws ........... Fig. 1
Middle Clam
.............N '_
2. While holding the three pieces together, install the four (4)
screws through the top clamp and into middle clamp.
uts Clamp
NOTE: The holes in the top and middle clamp will line
up only when assembled correctly.
3. Place the clamps and the handlebar over the shaft
housing and onto the bottom clamp.
4. Hold each hex nut in the bottom clamp recess with a
finger. Start screws with a large Phillips screwdriver. Do
not tighten until you make the handle adjustment.
5. While holding the unit in the operating position (Fig. 2),
move the handlebar to the location that provides you the
best grip.
Fig. 2
INSTALL THE HARNESS
when using the cutting blade to avoid serious
WARNING: Always use the shoulder harness
personal injury.
1. Push the strap through the center of the buckle.
2. Pull the strap over the cross bar and clown through the
slot in the buckle (Fig. 3).
3. Put the harness on over your head and onto your
shoulder. Snap it on to the support fitting (Fig. 4).
4. Adjust the length to fit the operator's size. Pull the tab to
lengthen, pull the strap to shorten (Fig 5).
fz .• ••••••
I Fig. 3
I Fig. 4
Support Fitting
6. Tighten the clamp screws evenly, until the handlebar is
secu re.
Fig. 5
/
/
REMOVE AND INSTALL THE CUTTING SHIELD
Remove the cutting attachment shield when using the
unit as a brushcutter
WARNING: The cutting attachment shield must
NOT be installed when operating the unit with a
blade. Remove the cutting attachment shield
before removing or installing the blade.
Remove the cutting attachment shield from the shield
mount by removing the three (3) screws with a flat blade
screwdriver (Fig. 7). Store parts for future use.
7
ASSEMBLY INSTRUCTIONS
Cutting
Attachment
Shield
Shield Mount
(3) Screws
Gear Housing
Fig.6
Install the cutting attachment shield when using the unit
as a grass trimmer
WARNING: To avoid serious personal injury, the
cutting attachment shield MUST be in place at all
times while operating the unit as a grass trimmer.
Install the cutting attachment shield on the shield mount by
inserting the three (3) screws into the shield mount. Tighten
securely with a flat blade screwdriver (Fig. 6).
REMOVE THE CUTTING ATTACHMENT AND INSTALL
THE CUTTING BLADE
NOTE: To make cutting blade removal and installation easi-
er, place the unit on the ground or on a work bench.
Remove the Cutting Attachment Shield
See Remove and Install the Cutting Attachment Shield.
Remove the Cutting Attachment
I. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the shaft bushing hole (Fig. 7).
WARNING: The gear housing gets hot with use.
It can result in injury to the operator. The hous-
ing remains hot for a short time even after the
unit is turned off. Do not touch the gear housing
until it has cooled.
2. Hold the locking rod in place by grasping it next to the
boom of the unit (Fig. 8).
3. While holding the locking rod, remove the cutting
attachment by turning it clockwise offofthe output shaft
(Fig. 9). Store the cutting attachment for future use.
NOTE: The blade retainer under the cutting attachment
will be used when installing the cutting blade.
I Fig. 8
Cutting Attachment Fig. 9
Locking Rod
Slot
Locking Rod
Install the Cutting Blade
always wear gloves while handling or installing
the blade.
4. Placethe cutting blade on the output shaft bushing (Fig. 10).
Blade Retainer _ Nut
Fig. 10
Shaft Bushing Hole
Locking Rod Slot
Locking
Fig. 7
Output
Shaft
Output Shaft
Bushing
Cutting
Blade
Shield
Mount
Pilot Hole
Output Shaft
Bushing
Locking Rod
8