Yard Machines Brush Cutter LT31CSH User manual

Operator’s Manual
LT31CSH
Trimmer /
Brushcutter
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
P/N 769-01672A (7/05)
INTRODUCTION
THANK YOU
TABLE OF CONTENTS
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-tounderstand 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.
Copyright© 2005 MTD SOUTHWEST INC, All Rights
Reserved.
Service Information . . . . . . . . . . . . . . . . . . . . . . . . .2
Rules for Safe Operation . . . . . . . . . . . . . . . . . . . . .3
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . .8
Oil and Petrol Information . . . . . . . . . . . . . . . . . . .11
Starting/Stopping Instructions . . . . . . . . . . . . . . . .12
Operating Instructions . . . . . . . . . . . . . . . . . . . . . .13
Maintenance and Repair Instructions . . . . . . . . . . .15
SERVICE INFORMATION
Service on this unit both within and after the warranty
period should be performed only by an authorized and
approved service dealer.
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . .21
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
DO NOT RETURN THE UNIT TO 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. Refer to the
sample plate below and copy the information for future
reference.
MODEL :
S/N :
Copy the model and parent
part number here:
ITEM :
Copy the serial number
here:
Make sure you carefully read and understand this manual before starting or operating this equipment.
THIS PRODUCT IS COVERED BY ONE OR MORE U.S. PATENTS. OTHER PATENTS PENDING.
2
RULES FOR SAFE OPERATION
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.
SYMBOL
MEANING
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.
SAFETY ALERT:
NOTE: Advises you of information or instructions vital to
the operation or maintenance of the equipment.
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.
SYMBOL
MEANING
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.
DANGER:
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.
WARNING:
to obey a
CAUTION: Failure
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.
• IMPORTANT SAFETY INSTRUCTIONS •
READ ALL INSTRUCTIONS
BEFORE OPERATING
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.
WARNING:
• Clear the area of children, bystanders, and pets. At a
minimum, keep all children, bystanders, and pets
outside a 15 m (50 foot) radius; there still may be a risk
to bystanders from thrown objects. Bystanders should
be encouraged to wear eye protection. If you are
approached, stop the unit immediately.
• Use only 2.41mm (0.095 inch) diameter original
equipment manufacturer replacement line. Never use
metal-reinforced line, wire or rope. These can break off
and become dangerous projectiles.
• Read the instructions carefully. Be familiar with the
controls and proper use of the unit.
• Squeeze the throttle control and check that it returns
automatically to the idle position. Make all adjustments
or repairs before using unit.
• Do not operate this unit when tired, ill, or under the
influence of alcohol, drugs, or medication.
SAFETY WARNINGS FOR PETROL UNITS
• 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 petrol 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 the risk of injury to the head, hands and
feet.
Petrol is highly
flammable, and its
vapors can explode if ignited. Take the
following precautions:
WARNING:
• Store petrol only in containers specifically designed
and approved for the storage of such materials.
• Avoid creating a source of ignition for spilled petrol.
Do not start the engine until petrol vapors dissipate.
• Always stop the engine and allow it to cool before
filling the feul tank. Never remove the feul 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.
3
RULES FOR SAFE OPERATION
• Add fuel in a clean, well-ventilated outdoor area where
there are no sparks or flames. Remove the fuel cap
slowly, and only after the engine stops. Do not smoke
while fueling or mixing fuel. Wipe up any spilled fuel
from the unit immediately.
• Avoid creating a source of ignition for spilled fuel. Do
not start the engine until fuel vapors dissipate.
• Move the unit at least 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 fuel or operating the unit.
WHILE OPERATING
• Never start or run the unit inside a closed room or
building. Breathing exhaust fumes can be fatal.
Operate this unit only in a well-ventilated outdoor area.
• Wear safety glasses or goggles that meet ANSI Z87.1
standards and are marked as such. Wear ear/hearing
protection when operating this unit. Wear a face or
dust mask if the operation is dusty.
• Wear heavy long pants, boots, gloves and a long
sleeve shirt. Do not wear loose clothing, jewelry, short
pants, sandals or go barefoot. Secure hair above
shoulder level.
• 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
unauthorized 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.
• 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.
• 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.
• This unit has a clutch. The cutting attachment remains
stationary when the engine is idling. If it does not, have
the unit adjusted by an authorized service technician.
• 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
attachment 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 difficult to see the material
being cut.
• For operation with the brush blade, do not cut
anything thicker than 1/2 inch or a violent kickback
could occur.
• Do not attempt to touch or stop the blade when it is
rotating.
• Adjust the 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.
• 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.
4
WHILE OPERATING WITH CUTTING BLADE
• 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
completely stopped rotating.
RULES FOR SAFE OPERATION
• 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 described
in this manual.
• Stop the engine IMMEDIATELY if you feel excessive
vibration. Vibration is a sign of trouble. Inspect
thoroughly for loose nuts, bolts or damage before
continuing. Repair or replace affected parts as
necessary.
• 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
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.
After Use
• Clean cutting blades with a household cleaner to
remove any gum buildup. Oil the blade with machine
oil to prevent rust.
SAVE THESE
INSTRUCTIONS
5
RULES FOR SAFE OPERATION
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.
SYMBOL
MEANING
SYMBOL
• SAFETY ALERT SYMBOL
MEANING
• ON/OFF STOP CONTROL
Indicates danger, warning or
caution. May be used in conjunction
with other symbols or pictographs.
OFF or STOP
• THROWN OBJECTS AND
ROTATING CUTTER CAN
CAUSE SEVERE INJURY
• WARNING - READ
OPERATOR'S MANUAL
WARNING: Do not
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.
operate without the cutting
attachment shield in place.
Keep away from the rotating cutting
attachment.
• WEAR EYE AND HEARING
PROTECTION
• 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.
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.
• BRUSHCUTTERS •REPLACE
DULL BLADE
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.
•KEEP BYSTANDERS AWAY
WARNING: Keep all
bystanders, especially children and
pets, at least 50 feet (15 m) from the
operating area.
• BRUSHCUTTER SAFETY
WARNING:
Thrown
objects and rotating cutter can
• UNLEADED FUEL
Always use clean, fresh unleaded
fuel.
cause severe injury. Keep
bystanders, especially children and
pets, at least 50 feet (15 m) away
from the cutting area. The cutting
attachment shield must be used
when using the trimmer cutting
attachment.
• OIL
Refer to operator's manual for the
proper type of oil.
• ON/OFF STOP CONTROL
ON / START / RUN
6
1
2
3
• CHOKE CONTROL
1. FULL choke position.
2. PARTIAL choke position.
3. RUN position.
KNOW YOUR UNIT
APPLICATIONS
As a trimmer:
• Cutting grass and light weeds
• Edging
• Decorative trimming around trees, fences, etc.
Petrol Cap
As a brushcutter:
• Cutting weeds and light brush of up to 1/2 inch in diameter
Starter Rope Grip
On/Off Stop Control
Hip Pad
Throttle
Lock-Out
Throttle Control
Support Fitting
Foot Stand
Blade Shield /
Shield Mount
Handlebar
Cutting Blade
Shaft
Housing
Blue Choke
Lever
Cutting Attachment Shield
Gear Housing
Primer Bulb
Muffler
Spark Plug
Cutting Attachment
Air Filter/Muffler
Cover
Line Cutting Blade
7
ASSEMBLY INSTRUCTIONS
INSTALL AND ADJUST THE HANDLEBAR
INSTALL THE HARNESS
1. Place the handlebar between the top and middle
clamp pieces (Fig. 1).
(4) Screws
1.
2.
Top Clamp
Always use the
shoulder harness
when using the cutting blade to avoid
serious personal injury.
Push the strap through the center of the buckle.
Pull the strap over the cross bar and down through
the slot in the buckle (Fig. 3).
Put the harness on over head and onto shoulder.
Snap it on to the support fitting (Fig. 4).
Adjust length to fit the operator’s size. Pull tab to
lengthen, pull strap to shorten (Fig 5).
WARNING:
3.
Middle Clamp
4.
Bottom
Clamp
Nuts
Fig. 1
2. While holding the three pieces together, install the four
(4) screws through the top clamp and into middle clamp.
NOTE: The holes in the top and middle clamp will line up
only when assembled correctly.
Fig. 3
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.
Support Fitting
Fig. 4
Fig. 5
REMOVE AND INSTALL THE CUTTING
ATTACHMENT SHIELD
The cutting
attachment shield
should NOT be installed when operating the
unit with a blade. Remove the cutting
attachment shield before removing or
installing the blade.
WARNING:
Fig. 2
6. Tighten the clamp screws evenly, until the handlebar
is secure.
8
Remove the cutting attachment shield when
using the unit as a brushcutter
Remove the cutting attachment shield from the shield
mount by removing the three (3) screws with a flat blade
screwdriver (Fig. 6). Store parts for future use.
ASSEMBLY INSTRUCTIONS
Cutting
Attachment
Shield
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 8).
(3) Screws
Gear Housing
3. While holding the locking rod, remove the cutting
attachment by turning it clockwise off of the 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.
Shield Mount
Fig. 6
Install the cutting attachment shield when using
the unit as a grass trimmer
To avoid serious
personal injury, the
cutting attachment shield MUST be in place
at all times while operating the unit as a
grass trimmer.
WARNING:
Fig. 8
Cutting Attachment
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 easier,
place the unit on the ground or on a work bench.
Locking Rod
Slot
Locking Rod
Fig. 9
Remove the Cutting Attachment Shield
The gear housing
gets hot with use. It
can result in injury to the operator. The
housing remains hot for a short time even
after the unit is turned off. Do not touch the
gear housing until it has cooled.
WARNING:
Install the Cutting Blade
To avoid serious
personal injury,
always wear gloves while handling or
installing the blade.
WARNING:
See Remove and Install the Cutting Attachment Shield.
4. Place the cutting blade on the output shaft bushing
(Fig. 10).
Remove the Cutting Attachment
1. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the shaft bushing hole (Fig. 7).
Blade Retainer
Nut
Cutting
Blade
Output Shaft
Shaft Bushing Hole
Shield
Mount
Pilot Hole
Locking Rod Slot
Output Shaft
Bushing
Locking Rod
Output Shaft
Bushing
Locking Rod
Fig. 7
Fig. 10
9
ASSEMBLY INSTRUCTIONS
5. Make sure that the cutting blade is centered on the
pilot step and sitting flat against the output shaft
bushing (Fig. 11).
If the cutting blade
is off-center, the
unit will vibrate and the blade may fly off,
causing possible serious personal injury.
WARNING:
REMOVE THE CUTTING BLADE AND
INSTALL THE CUTTING ATTACHMENT
To avoid serious
personal injury,
always wear gloves while handling or
installing the blade.
WARNING:
Remove the Cutting Blade
1. Align the shaft bushing hole with the locking rod slot
and insert the locking rod into the bushing hole (Fig. 7).
2. Hold the locking rod in place by grasping it next to
the boom of the unit (Fig. 13).
3. While holding the locking rod, loosen the nut on the
blade by turning it clockwise with the supplied wrench
(or a 13 mm closed-end or socket wrench) (Fig. 13).
Pilot Step
Fig. 11
Clockwise
6. Align the shaft bushing hole with the locking rod
slot and insert the locking rod into the bushing hole
(Fig. 7).
7. Put the blade retainer and nut on the output shaft.
Make sure that the blade is installed correctly.
8. Tighten nut counterclockwise against the blade while
holding the locking rod:
• If using a torque wrench and an 13 mm socket tighten
to: 325 - 335 in•lb, 27 - 28 ft.•lb, 37 - 38 N•m.
• Without a torque wrench, use a 13 mm closed-end or
socket wrench, turning the nut until the blade retainer
is snug against the shaft bushing. Make sure that the
blade is installed correctly, then rotate the nut an
additional 1/4 to 1/2 turn counterclockwise (Fig. 12).
Fig. 13
4. Remove the nut, blade retainer and blade. Store the
nut and blade together for future use in a secure
place. Store out of children’s reach.
Install the Cutting Attachment
5. Align the shaft bushing hole with the locking rod slot and
insert the locking rod into the shaft bushing hole (Fig. 7).
Place the blade retainer on the output shaft with the flat
surface against the output shaft bushing (Fig. 14). Screw
the cutting attachment counterclockwise onto the output
shaft. Tighten securely.
NOTE: The blade retainer must be installed on the output
shaft in the position shown for the cutting
attachment to work correctly.
Cutting Attachment
Blade Retainer
1/4-1/2 turn
Counterclockwise
Fig. 12
9. Remove the locking rod from the locking rod slot.
To avoid serious
personal injury or
damage to the unit, do not start or operate this
unit with the locking rod in the locking rod slot.
WARNING:
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.
WARNING:
10
Output Shaft
Bushing
Locking Rod
Fig. 14
6. Remove the locking rod.
7. Install the cutting attachment shield. Refer to Remove
and Install the Cutting Attachment Shield.
To avoid serious
personal injury, the
cutting attachment shield MUST be in place at
all times while operating the unit as a trimmer.
WARNING:
OIL AND PETROL INFORMATION
OIL AND PETROL MIXING INSTRUCTIONS
Old and/or improperly mixed fuel are the main reasons
for the unit not running properly. Be sure to use fresh,
clean unleaded petrol. Follow the instructions carefully
for the proper petrol/oil mixture.
Definition of Blended Petrols
Today's petrols are often a blend of petrol and
oxygenates such as ethanol, methanol, or MTBE (ether).
Alcohol-blended petrol absorbs water. As little as 1%
water in the petrol can make petrol and oil separate. It
forms acids when stored. When using alcohol-blended
petrol, use fresh petrol (less than 60 days old).
Thoroughly mix the proper ratio of 2-cycle engine oil
with unleaded petrol in a separate fuel can. Use a 40:1
petrol/oil ratio. Do not mix them directly in the engine
fuel tank. See the table below for specific petrol and oil
mixing ratios.
NOTE: 3.8 liters (1 gallon) of unleaded petrol mixed with
one 95 ml (3.2 oz) bottle of 2-cycle oil makes a
40:1 petrol/oil ratio.
+
Using Blended Petrols
If you choose to use a blended petrol, or its use is
unavoidable, follow recommended precautions:
• Always use the fresh fuel mix explained in your
operator's manual
• 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 that came with your unit
contains a fuel additive which will help inhibit corrosion
and minimize the formation of gum deposits. It is
recommended that you use our 2-cycle oil with this unit.
If unavailable, use a good 2-cycle oil designed for
air-cooled engines along with a fuel additive, such as
STA-BIL® Petrol Stabilizer or an equivalent. Add 23 ml
(0.8 oz) 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.
proper engine
CAUTION: For
operation and
maximum reliability, pay strict attention to
the oil and petrol mixing instructions on the
2-cycle oil container. Using improperly mixed
fuel can severely damage the engine.
UNLEADED PETROL
2 CYCLE OIL
3.8 LITERS
1 GALLON US
95 ml
3.2 FL. OZ
1 LITER
25 ml
MIXING RATIO - 40:1
Petrol 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 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 spilt fuel. Do not start the engine
until fuel vapors dissipate.
WARNING:
NOTE: Dispose of the old petrol/oil mix in accordance to
Federal, State and Local regulations.
11
STARTING/STOPPING INSTRUCTIONS
Operate this unit only in a
well- ventilated outdoor
area. Carbon monoxide exhaust fumes can be lethal in
a confined area.
WARNING:
Avoid accidental starting.
Make sure you are in the
starting position when pulling the starter rope
(Fig. 17). To avoid serious injury, the operator and unit
must be in a stable position while starting.
WARNING:
STARTING INSTRUCTIONS
1. Mix petrol with oil. Fill fuel tank with fuel/oil mixture. See
Oil and Fuel Mixing Instructions.
2. Make sure the On/Off Stop Control in the ON ( I )
position (Fig. 15).
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. 16). 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.
4. Place the blue choke lever in Position 1 (Fig. 16).
5. With the unit on the ground, place one foot on the metal
foot stand to hold the unit in place (Fig. 17). Press the
throttle lock-out while you squeeze the throttle control.
Pull the starter rope out with a controlled and steady
motion 5 times.
Stop/Off (O)
Throttle
Control
Throttle
Lock-Out
Start/On ( I )
Fig. 15
Position 1
Position 2
NOTE: The unit uses Advanced Starting Technology™,
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.
Blue Choke Lever
Primer Bulb
6. Place the blue choke lever in Position 2.
7. While squeezing the throttle control, pull the starter
rope out with a controlled and steady motion until the
engine starts.
8. Keep the throttle squeezed and allow the engine to
warm up for 15 to 30 seconds.
9. Place the blue choke lever in Position 3. The unit is
ready for use.
Fig. 16
Starting
Position
IF... The engine does not start, go back to step 3.
IF... The engine fails to start after a few attempts, place
the blue choke lever in Position 3 and squeeze the
throttle control. Pull the starter rope briskly 3 to 8
times. The engine should start. If not, repeat.
Starter Rope
IF WARM... If the engine is already warm, make sure the
On/Off Stop control is in the ON position and start the
unit with the blue choke lever in Position 2. After the
unit starts, move the blue choke lever to Position 3.
STOPPING INSTRUCTIONS
1. Release your hand from the throttle control. Allow the engine
to cool down by idling.
2. Put the On/Off Stop Control in the OFF (O) position.
12
Position 3
Throttle Control
(Squeezed)
Fig. 17
OPERATING INSTRUCTIONS
HOLDING THE TRIMMER
Always wear eye,
hearing, foot and
body protection to reduce the risk of injury
when operating this unit.
WARNING:
Before operating the unit, stand in the operating position
(Fig. 18). Check for the following:
• The operator is wearing eye protection and proper
clothing
• The operator’s hands are firmly gripping the handles
• 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
Once you are in the operating position, hook the
shoulder strap to the unit.
Each time the head is bumped, about 1 inch (25.4 mm) of
trimming line is released. A blade in the cutting
attachment shield will cut the line to the proper length if
excess line is released.
For best results, tap the Bump Head™ on bare ground or
hard soil. If line release is attempted in tall grass, the
engine may stall. Always keep the trimming line fully
extended. Line release becomes more difficult as the
cutting line becomes shorter.
NOTE: Do not rest the Bump Head™ on the ground
while the unit is running.
not remove or alter
CAUTION: Do
the line cutting blade
assembly. Excessive line length will make the
clutch overheat. This may lead to serious
personal injury or damage to the unit.
Some line breakage will occur from:
• Entanglement with foreign matter
• Normal line fatigue
• Attempting to cut thick, stalky weeds
• Forcing the line into objects such as walls or fence posts
TIPS FOR BEST TRIMMING RESULTS
• For best trimming results, operate unit at full throttle.
• 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.
Fig. 18
ADJUSTING TRIMMING LINE LENGTH
The Bump Head™ cutting attachment allows you to
release trimming line without stopping the engine. To
release more line, lightly tap the cutting attachment on the
ground (Fig. 19) while operating the trimmer at high speed.
NOTE: Always keep the trimming line fully extended.
Line release becomes more difficult as the cutting
line becomes shorter.
• Cut from left to right whenever possible. Cutting to the
right 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 forwardbackward 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 trimming techniques (explained
above)
• What vegetation is cut
• Where vegetation is cut
For example, the line will wear faster when trimming against
a foundation wall as opposed to trimming around a tree.
Fig. 19
13
OPERATING INSTRUCTIONS
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. 20).
The blade continues
to spin after the
engine is turned off. The coasting blade can
seriously cut you if accidentally touched.
WARNING:
• Swing the unit in the opposite direction as the blade
spins, which increases the cutting action.
• After the return swing, move forward to the next area
to be cut plant your feet again.
• The cutting blade is designed with a second cutting
edge. You can use it by removing the blade, turning it
upside down, and reinstalling it.
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 to yourself or others.
Replace the blade.
WARNING:
Fig. 20
USING THE CUTTING BLADE
Always wear eye,
hearing, foot, body
protection and the shoulder strap to reduce the
risk of injury when operating this unit.
WARNING:
Do not use the
cutting blade for
edging or as an edger. Severe personal injury
to yourself or others can result.
WARNING:
Before operating the unit with the cutting blade, stand in
the operating position (Fig. 21). Refer to Holding the
Trimmer.
To reduce the chance of material wrapping around the
blade, follow these steps:
• Cut at full throttle
• Swing the unit into material to be cut from your left to
your right (Fig. 22)
• Avoid the material just cut as you make the return swing
Do not clear away
any cut material with
the engine running or blade turning. To avoid
serious personal injury, turn off the engine.
Allow the blade to stop before removing
materials wrapped around the blade shaft.
WARNING:
Cutting Blade Operating Tips
To establish a rhythmic cutting procedure:
• Plant feet firmly, comfortably apart.
• Bring the engine to full throttle before entering the
material to be cut. At full throttle the blade has
maximum cutting power and is less likely to bind, stall
or cause blade thrust (which can result in serious
personal injury to the operator or others).
Blade thrust may
occur when the
spinning blade contacts an object that it does
not immediately cut. Blade thrust can be violent
enough to cause the unit and/or operator to be
propelled in any direction, and possibly lose
control of the unit. Blade thrust can occur
without warning if the blade snags, stalls or
binds. This is more likely to occur in areas where
it is difficult to see the material being cut.
WARNING:
Fig. 21
• Cut while swinging the upper part of your body from
left to right.
• Always release the throttle trigger and allow the engine
to return to idle speed when not cutting.
• When you are finished, always unsnap the unit from
the harness before taking off the harness.
Fig. 22
14
MAINTENANCE AND REPAIR INSTRUCTIONS
MAINTENANCE SCHEDULE
Perform these required maintenance procedures at the
frequency stated in the table. These procedures should
also be a part of any seasonal tune-up.
NOTE: Some maintenance procedures may require
special tools or skills. If you are unsure about
these procedures take your unit to any non-road
engine repair establishment, individual or
authorized service dealer.
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.
WARNING:
NOTE: Maintenance, replacement, or repair of the
emission control devices and system may be
performed by any non-road engine repair
establishment, individual or authorized 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 any non-road engine repair
establishment, individual or authorized 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.
FREQUENCY
MAINTENANCE REQUIRED
REFER TO
Before starting engine
Every 10 hours
Fill fuel tank with fresh fuel
Clean and re-oil air filter
Page 11
Page 17
Every 25 hours
Check and clean spark arrestor
Check spark plug condition and gap
Page 18
Page 19
Every 50 hours
Inspect spark arrestor screen for clogging or obstruction to assure
maximum performance levels
Page 18
LINE INSTALLATION
2. Remove the inner reel from the outer spool (Fig. 23).
This section covers both SplitLine™ and standard single
line installation.
Always use original equipment manufacturer (2.41 mm
(0.095 in) replacement line. Other types of line may make
the engine overheat or fail.
3. Remove spring from the inner reel (Fig. 23).
Never use metalreinforced line, wire,
chain or rope. These can break off and
become dangerous projectiles.
WARNING:
4. Use a clean cloth to clean the the inner reel, spring,
shaft and inner surface of the outer spool (Fig. 24).
5. Check the indexing teeth on the inner reel and outer
spool for wear (Fig. 25). If necessary, remove burrs or
replace the reel and spool.
There are two methods to replace the trimming line:
• Wind the inner reel with new line
• Install a prewound inner reel
Winding the Existing Inner Reel
1. Hold the outer spool with one hand and unscrew the
Bump Knob clockwise (Fig. 23). Inspect the bolt
inside the bump knob to make sure it moves freely.
Replace the bump knob if damaged.
Fig. 24
Indexing Teeth
Outer Spool
Spring
Inner Reel
Bolt
Bump Knob
Fig. 23
Fig. 25
15
MAINTENANCE AND REPAIR INSTRUCTIONS
For Use with Single
Line ONLY
For Use with SplitLine™
or Single Line
Slotted
Holes
9. Insert the end of the line into the open hole in the
inner reel and pull the line tight to make the loop as
small as possible (Fig. 29).
10. Before winding, split the line back about 6 inches.
11. Wind the line in tight even layers in the direction
indicated on the inner reel.
NOTE: Failure to wind the line in the direction indicated will
cause the cutting attachment to operate incorrectly.
Fig. 26
NOTE: SplitLine™ can only be used with the inner reel
with the slotted holes. Single line can be used on
either type of inner reel. Use Figure 26 to identify
the inner reel you have.
NOTE: Always use the correct line length when installing
trimming line on the unit. The line may not release
properly if the line is too long.
Loop
Fig. 29
12. Insert the ends of the line into the two holding slots
(Fig. 30).
Loop
13. Insert the ends of the line through the eyelets in the
outer spool and place inner reel with spring inside the
outer spool (Fig. 31). Push the inner reel and outer
spool together. While holding the inner reel and outer
spool, grasp the ends and pull firmly to release the
line from the holding slots in the reel.
Fig. 27
Single Line Installation
Go To Step 8 for SplitLine™ Installation
6. Take approximately 20 feet (6 m) of new trimming
line, loop it into two equal lengths. Insert each end of
the line through one of the two holes in the inner reel
(Fig. 27). Pull the line through the inner reel so that
the loop is as small as possible.
7. Wind the lines in tight even layers, onto the reel
(Fig. 28). Wind the line in the direction indicated on
the inner reel. Place your index finger between the
two lines to stop the lines from overlapping. Do not
overlap the ends of the line. Proceed to step 11.
Holding Slots
Fig. 30
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
14. Hold the inner reel in place and install the bump knob
by turning counterclockwise. Tighten securely.
Fig. 28
SplitLine™ Installation
8. Take approximately 10 feet (3 m) of new trimming
line. Insert one end of the line through one of the two
holes in the inner reel (Fig. 29). Pull the line through
the inner reel until only about 4 inches is left out.
16
Spring
Fig. 31
MAINTENANCE AND REPAIR INSTRUCTIONS
INSTALLING A PREWOUND REEL
Cleaning the Air Filter
1. Hold the outer spool with one hand and unscrew the
bump knob clockwise (Fig. 23). Inspect the bolt
inside the bump knob to make sure it moves freely.
Replace the bump knob if damaged.
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.
2. Remove the old inner reel from the outer spool
(Fig. 23).
1. Remove air filter/muffler cover. Refer to Removing
the Air Filter/Muffler Cover.
2. Turn cover over and look inside to locate the air filter.
Remove the air filter from inside the air filter/muffler
cover (Fig. 33).
3. Wash the filter in detergent and water (Fig. 34). Rinse
the filter thoroughly. Squeeze out excess water. Allow
it to dry completely.
4. Apply enough clean SAE 30 oil to lightly coat the filter
(Fig. 35).
5. Squeeze the filter to spread and remove excess oil
(Fig. 36).
3. Remove the spring from the old inner reel
(Fig. 23).
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
5. Insert the ends of the line through the eyelets in the
outer spool (Fig. 31).
6. Place the new inner reel inside the outer spool. Push the
inner reel and outer spool together. While holding the
inner reel and outer spool, grasp the ends and pull firmly
to release the line from the holding slots in the spool.
7. Hold the inner reel in place and install the bump knob
by turning counterclockwise. Tighten securely.
AIR FILTER MAINTENANCE
Removing the Air Filter/Muffler Cover
Air Filter
To avoid serious
personal injury,
always turn your unit off and allow it to cool
before you clean or service it.
WARNING:
1. Place the choke lever in Position 2 (Fig. 32).
Inside Muffler
Cover
Fig. 33
Fig. 34
NOTE: The choke lever must be in Position 2 to remove
the air filter/ muffler cover.
2. Remove the four (4) screws securing the air
filter/muffler cover (Fig. 32). Use a T-20 Torx bit
screwdriver.
3. Pull the cover from the engine. Do not force.
Blue Choke
Lever
Position 2
Fig. 35
Fig. 36
6. Replace the air filter inside the air filter/muffler cover
(Fig. 33).
Screws
Screws
NOTE: Operating the unit without the air filter and air
filter/muffler cover assembly will VOID the
warranty.
Reinstalling the Air Filter/Muffler Cover
Fig. 32
1. Place the air filter/muffler cover over the back of the
carburetor and muffler. Align the screw holes.
2. Insert the four (4) screws into the holes in the air
filter/muffler cover (Fig. 32) and tighten.
Do not over tighten.
17
MAINTENANCE AND REPAIR INSTRUCTIONS
SPARK ARRESTOR MAINTENANCE
If the exhaust
deflector assembly is
not tightened securely, it could fall off causing
damage to the unit and possible serious
personal injury.
WARNING:
NOTE: The exhaust can only flow in one direction: AWAY
from the engine. Pay close attention when
disassembling the muffler so you can put it back
together correctly. Failure to do so will damage
the unit and may cause serious personal injury.
1. Remove air filter/muffler cover. Refer to Removing
the Air Filter/Muffler Cover.
Muffler
2. Locate the muffler, but do not remove it. Find the two
(2) screws on the bottom of the muffler (Fig. 37).
These two screws hold the Spark Arrestor Hood
Assembly and the spark arrestor screen to the
bottom of the muffler. Remove the two (2) screws
using either a torx #20 or flat blade screwdriver.
3. Using a small flat blade screwdriver, carefully pry up
the spark arrestor screen from the recessed hole,
taking care to notice that the “raised” part of the
spark arrestor screen is inside the recessed hole.
Remove the spark arrestor screen from the muffler.
4. Clean the spark arrestor screen with a wire brush.
Replace it if it is damaged, or if you are unable to
clean it thoroughly.
5. Reinstall the spark arrestor screen by putting the
“raised” portion of the screen inside the recessed
hole of the muffler. Make sure that the spark arrestor
screen fits flat against the muffler.
6. Place the spark arrestor plate on top of the spark
arrestor with the “raised” side up and the opening
facing towards the engine (Fig. 37).
7. Place the spark arrestor hood on top of the spark
arrestor plate with the “raised” side up and the
opening facing AWAY from the engine (Fig. 37). Verify
that the exhaust will be directed AWAY from the
engine.
Spark Arrestor
Screen
Spark Arrestor
Plate
Opening
Engine
Recessed Hole
Spark Arrestor Hood
Assembly Includes:
Spark Arrestor Plate
Spark Arrestor Hood
and Screws
Spark Arrestor
Hood
Screws
Fig. 37
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable through the air
filter/muffler cover (Fig. 38).
8. Replace the two screws you removed in Step 2 and
tighten them securely.
NOTE: Careless adjustments can seriously damage your
unit. An authorized service dealer should make
carburetor adjustments.
9. Reinstall the air filter/muffler cover.
Check Fuel Mixture
Old and/or improperly mixed fuel is usually the reason
for improper unit performance. Drain and refill the tank
with fresh, properly-mixed fuel prior to making any
adjustments. Refer to Oil and Fuel Information.
18
MAINTENANCE AND REPAIR INSTRUCTIONS
Clean Air Filter
The condition of the air filter is important to the operation
of the unit. A dirty air filter will restrict air flow and
change the air/fuel mixture. This is often mistaken for an
out of adjustment carburetor. Check the condition of the
air filter before adjusting the idle speed screw. Refer to
Air Filter Maintenance.
The cutting
attachment may spin
during idle speed adjustments. Wear
protective clothing and observe all safety
instructions to prevent serious personal injury.
WARNING:
Adjust Idle Speed Screw
If, after checking the fuel mixture and cleaning the air
filter, the engine still will not idle, adjust the idle speed
screw as follows:
1. Start the engine and let it run at a high idle for a
minute to warm up. Refer to Starting/Stopping
Instructions.
2. Release the throttle trigger and let the engine idle. If
the engine stops, insert a small phillips or flat blade
screwdriver into the hole in the air filter/muffler cover
(Fig. 38). Turn the idle speed screw in, clockwise,
1/8 of a turn at a time (as needed) until the engine
idles smoothly.
Idle Speed Screw
Checking the fuel mixture, cleaning the air filter, and
adjusting the idle speed should solve most engine
problems. If not and:
• the engine will not idle
• the engine hesitates or stalls on acceleration
• there is a loss of engine power
Have the carburetor adjusted by an authorized service
dealer.
To prevent serious
personal injury,
make sure the cutting attachment has
stopped rotating before you turn it off and
set it down.
WARNING:
REPLACING THE SPARK PLUG
Use a Champion RDJ7Y spark plug, or equivalent. The
correct air gap is 0.020 inch (0.5 mm). Remove the plug
after every 25 hours of operation and check its condition.
1. Stop the engine and allow it to cool. Grasp the plug
wire firmly and pull it from the spark plug.
2. Clean around the spark plug. Remove the spark plug
from the cylinder head by turning a 5/8-inch socket
counterclockwise.
3. Replace a cracked, fouled or dirty spark plug. Set
the air gap at 0.020 in. (0.5 mm) using a feeler gauge
(Fig. 39).
Do not sand blast,
scrape or clean
electrodes. Grit in the engine could damage
the cylinder.
WARNING:
4. Install a correctly-gapped spark plug in the cylinder
head. Tighten by turning the 5/8-inch socket
clockwise until snug.
If using a torque wrench torque to:
110-120 in.•lb. (12.3-13.5 N•m)
Do not over tighten.
Fig. 38
NOTE: The cutting attachment should not rotate when
the engine idles.
0.020 in.
(0.5 mm)
3. If the cutting attachment rotates when the engine
idles, turn the idle speed screw counterclockwise
1/8 of a turn at a time (as needed), to reduce idle
speed.
Fig. 39
19
MAINTENANCE AND REPAIR INSTRUCTIONS
CLEANING
To avoid serious
personal injury,
always turn your trimmer off and allow it to
cool before you clean or service it.
WARNING:
Use a small brush to clean off the outside of the unit.
Do not use strong detergents. Household cleaners that
contain aromatic oils such as pine and lemon, and
solvents such as kerosene, can damage plastic housing
or handle. Wipe off any moisture with a soft cloth.
STORAGE
• Never store a fueled unit where fumes may reach an
open flame or spark.
2. Start the engine and allow it to run until it stalls. This
ensures that all fuel has been drained from the
carburetor.
3. Allow the engine to cool. Remove the spark plug and
put 30 ml (1 oz) of any high quality motor oil or
2-cycle oil into the cylinder. Pull the starter rope
slowly to distribute the oil. Reinstall the spark plug.
NOTE: Remove the spark plug and drain all of the oil
from the cylinder before attempting to start the
trimmer after storage.
4. Thoroughly clean the unit and inspect it for any loose
or damaged parts. Repair or replace damaged parts
and tighten loose screws, nuts or bolts. The unit is
ready for storage.
• Allow the engine to cool before storing.
TRANSPORTING
• Store the unit locked up to prevent unauthorized use
or damage.
• Allow the engine to cool before transporting.
• Store the unit in a dry, well-ventilated area.
• Tighten fuel cap before transporting.
• Store the unit out of the reach of children.
• Secure the unit while transporting.
LONG TERM STORAGE
If you plan on storing the unit for an extended time, use
the following storage procedure:
1. Drain all fuel from the fuel tank into a container with
the same 2-cycle fuel mixture. Do not use fuel that
has been stored for more than 60 days. Dispose of
the old fuel/oil mix in accordance to Federal, State
and Local regulations.
20
• Drain fuel from unit.
TROUBLESHOOTING
ENGINE WILL NOT START
CAUSE
On/Off control in the OFF position
Empty fuel tank
Primer bulb wasn't pressed enough
Engine is flooded
Old or improperly mixed fuel
Fouled spark plug
Plugged spark arrestor
The outside temperature is below 40º F
The outside temperature is above 90º F
ACTION
Turn On/Off control to ON
Fill fuel tank with properly mixed fuel
Press primer bulb fully and slowly 10 times
Squeeze the trigger and pull the starter rope
Drain fuel tank and add fresh fuel mixture
Replace or clean the spark plug
Clean or replace spark arrestor
Pull the starter rope up to 10-15 times
Squeeze the throttle control and pull the starter rope
ENGINE WILL NOT IDLE
CAUSE
Air filter is plugged
Old or improperly mixed fuel
Improper carburetor adjustment
ACTION
Replace or clean the air filter
Drain fuel tank and add fresh fuel mixture
Adjust according to the Carburetor Adjustments section
ENGINE WILL NOT ACCELERATE
CAUSE
Old or improperly mixed fuel
Improper carburetor adjustment
Cutting attachment bound with grass
Dirty air filter
Plugged spark arrestor
ACTION
Drain fuel tank and add fresh fuel mixture
Take to an authorized service dealer for an adjustment
Stop the engine and clean the cutting attachment
Clean or replace the air filter
Clean or replace spark arrestor
ENGINE LACKS POWER OR STALLS WHEN CUTTING
CAUSE
Old or improperly mixed fuel
Improper carburetor adjustment
Fouled spark plug
Plugged spark arrestor
ACTION
Drain fuel tank and add fresh fuel mixture
Take to an authorized service dealer for an adjustment
Replace or clean the spark plug
Clean or replace spark arrestor
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
CAUSE
Cutting attachment bound with grass
Cutting attachment out of line
Inner reel bound up
Cutting head dirty
Line welded
Line twisted when refilled
Not enough line is exposed
ACTION
Stop the engine and clean cutting attachment
Refill with new line
Replace the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded section and rewind
Disassemble and rewind the line
Push the bump knob and pull out line until 102 mm)
(4 inches) of line is outside of the cutting attachment
CUTTING LINE ADVANCES UNCONTROLLABLY
C A U SE
Oil, cleaner or lubricant in cutting head
ACTION
Clean and thoroughly dry the cutting head
If further assistance is required, contact your authorized service dealer.
21
SPECIFICATIONS
ENGINE*
Engine Type.......................................................................................................................................... Air-Cooled, 2-Cycle
Stroke ................................................................................................................................................... 31.75 mm (1.25 in. )
Displacement............................................................................................................................................. 31 cc (1.9 cu in.)
Clutch Type ......................................................................................................................................................... Centrifugal
Idle Speed RPM ...................................................................................................................................... 2,800 - 3,600 rpm
Operating RPM.................................................................................................................................................. 7,800+ rpm
Ignition Type.......................................................................................................................................................... Electronic
Ignition Switch .............................................................................................................................................. Rocker Switch
Spark Plug Gap ....................................................................................................................................... 0.5 mm (0.020 in.)
Lubrication ................................................................................................................................................... Fuel/Oil Mixture
Fuel/Oil Ratio.................................................................................................................................................................. 40:1
Carburetor ....................................................................................................................................... Diaphragm, All-Position
Starter...................................................................................................................... Auto Rewind (Spring Assist Starting™)
Muffler ..................................................................................................................................................... Baffled with Guard
Throttle ............................................................................................................................................... Manual Spring Return
Fuel Tank Capacity .................................................................................................................................... 444 ml (15 fl.oz.)
DRIVE SHAFT & CUTTING ATTACHMENT*
Drive Shaft Housing ............................................................................................................................................ Steel Tube
Throttle Control................................................................................................................. Finger-Tip Trigger with Lock-Out
Approximate Unit Weight (No petrol, with cutting attachment, shield and handle) ........................................ 7 kg (15 lbs. )
Cutting Mechanism ................................................................................. 4-Tooth Cutting Blade, Dual String Cutting Head
Line Spool............................................................................................................................................. Bump Line Releaser
Line Spool Diameter ............................................................................................................................. 101.6 mm (4 inches)
Trimming Line Diameter ...................................................................................................................... 2.41 mm (0.095 inch)
Cutting Path Diameter, Cutting Attachment ......................................................................................... 45.7 cm (18 inches)
Cutting Path Diameter, Cutting Blade ..................................................................................................... 204 mm (8 inches)
Shoulder Harness ................................................................................................................................... Single Quick-Snap
Maximum
Maximum
Maximum
Maximum
Vibration Level (Idle)** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.85 m/s2
Vibration Level (Racing)** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.77 m/s2
Sound Pressure Level (Idle) ‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.0 LpeqdB(A)
Sound Pressure Level (Racing) ‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.0 LpeqdB(A)
** Method for obtaining level per ISO 7916
‡ Method for obtaining level per ISO 7917
*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.
22
NOTES
23
NOTES
24
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