Core ROVER R4200 User manual

769-11498 / 00 04/17
Operator’s Manual
R4200
Cordless Trimmer
TABLE OF CONTENTS
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
IMPORTANT: Read this manual thoroughly before using this product. Follow all instructions.
SAVE THESE INSTRUCTIONS
SERVICE
All information, illustrations, and specifications in this manual are based
on the latest product information available at the time of printing. We
reserve the right to make changes at any time without notice.
The product may vary slightly from the illustrations contained in this
manual.
Copyright© 2017 MTD SOUTHWEST INC, All Rights Reserved.
DO NOT RETURN THIS UNIT TO THE RETAILER. PROOF OF
PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.
For assistance regarding the assembly, operation or maintenance of
the unit, please call 1300 951 594. Additional information can be
found at www.rover.com.au.
Warranty service is available through an authorized service center.
To locate a service center in your area, please visit our website or
call the number listed above. Service on this unit, both within and
after the warranty period, should only be performed by an
authorized and approved service center. When servicing, use only
identical replacement parts.
Battery and Battery Charger Sold Separately
ORIGINAL INSTRUCTIONS

2
SAFETY
SYMBOL MEANING
WARNING: Signals a SERIOUS
hazard. Failure to obey a safety WARNING
symbol CAN result in serious injury to
yourself or to others.
CAUTION: Signals a MODERATE
hazard. Failure to obey a safety CAUTION
symbol 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
symbol WILL result in serious injury or
death to yourself or to others.
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.

3
WARNING: Only use 4144 or 6216
batteries with this unit. DO NOT use any
other type of battery, attachment or
accessory with this unit. Other types of
batteries, attachments or accessories
could lead to serious injury, property
damage or damage to the unit.
• IMPORTANT SAFETY INSTRUCTIONS •
READ ALL INSTRUCTIONS BEFORE OPERATING
WARNING:Read all safety warnings
and all instructions. Failure to follow the
warnings and instructions may result in
electric shock, fire and/or serious injury.
1. SAVE THESE INSTRUCTIONS - This manual
contains important safety and operating
instructions.
2. Before using this product, read all instructions
and cautionary markings on the battery, battery
charger, and the unit(s) powered by the battery.
3. Do not handle the charger, including the charger
plug and charger terminals, with wet hands.
4. Do not charge the unit outdoors.
WARNING: Only charge 4144 or
6216 batteries with a 4044 battery charger.
DO NOT attempt to use any other battery
charger to charge 4144 or 6216 batteries.
Other types of battery chargers may cause
the batteries to burst, resulting in fire,
personal injury or property damage.
GENERAL SAFETY WARNINGS
• Read the instructions carefully. Be familiar with
the controls and proper use of the unit.
• Stay alert. Do not operate this unit when tired, ill
or under the influence of alcohol, drugs or
medication.
• Never allow children to operate the unit. Teens
must be trained, accompanied and supervised
by an adult. Local regulations may require the
operator to be of a certain age. Never allow
anyone, of any age, to use this unit if they are
unfamiliar with the instructions contained in this
manual. Never allow people with reduced
physical, sensory or mental capabilities, or lack
of experience and knowledge, to use the unit.
Never allow children to clean or maintain the
unit without supervision.
• All guards and safety attachments must be
installed properly before operating the unit.
• Inspect the unit before use. Check for damaged
parts. Make sure all parts operate properly.
Make sure all fasteners are in place and secure.
Make sure all moving parts are properly aligned
and are not bound. Have all damaged or
improperly working parts repaired or replaced
by an authorized service center. Do not operate
the unit with loose or damaged parts.
• 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.
• This unit is intended for occasional, household
use only.
• Do not allow the unit to be used as a toy.
• The operator or user is responsible for accidents or
hazards occurring to other people or their property.
WARNING: DO NOT attempt to
charge non-rechargeable batteries. Only
use a 4044 battery charger to charge 4144
or 6216 batteries. DO NOT attempt to
charge any other batteries with a 4044
battery charger. Other types of batteries
may burst, causing fire, personal injury or
property damage.

4
SAFETY WARNINGS FOR ELECTRIC UNITS
General Electric Safety
• Do not expose the unit to rain or wet conditions.
• Do not handle the unit with wet hands.
• Do not operate the unit in the rain, in wet
conditions or on wet surfaces.
• To reduce the risk of electric shock, avoid body
contact with grounded conductors, such as
metal pipes or wire fences.
• Do not operate the unit in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust.
Battery Charger Safety
• A nameplate on the unit indicates the voltage
used. Never connect the unit to an AC voltage
that differs from this voltage.
• An extension cord should not be used unless
absolutely necessary. Use of an improper
extension cord could result in a risk of fire,
electric shock or electrocution.
• Do not use multiple extension cords.
• Make sure the extension cord is heavy enough
to carry the current drawn by the unit. An
undersized extension cord will cause a drop in
line voltage, resulting in a loss of power and
overheating. If in doubt, use the next heavier
gauge cord. The smaller the gauge number, the
heavier the cord.
• Make sure the cords are in good condition.
Inspect the power cord and extension cord
periodically. Look closely for deterioration, cuts
or cracks in the insulation. If a cord is damaged
in any manner while plugged in, disconnect the
cord from both the outlet and the unit. Do not
use a damaged cord. Damaged cords should be
repaired or replaced.
• Do not abuse cords. Never pull or carry the unit
by a cord. Keep cords away from heat, oil,
water, sharp edges, and moving objects. Always
grasp the plug when disconnecting a cord.
• Never modify a plug, cord or outlet in any way.
• round Fault Circuit Interrupter ( FCI)
protection should be provided on the circuit(s)
or outlet(s) to be used with this unit. For an extra
measure of safety, use receptacles with built-in
FCI protection.
• Do not place the battery charger where cords
might be stepped on, tripped over or subjected
to damage.
• Do not charge batteries in the rain or in wet
conditions. Keep the battery charger in a cool
and dry area.
• Keep the battery charger away from all liquid.
• Do not allow small metal items or material such
as steel wool, aluminum foil or other foreign
particles into the charger port.
• Do not probe the charger with conductive
material. There is a risk of electric shock.
• Do not cover the battery charger. The battery
charger may overheat.
• Do not allow the battery or battery charger to
overheat. If they are warm, allow them to cool
down. Only charge batteries in temperatures
between 32° and 104° F (0° and 40° C).
• Always unplug the battery charger before
cleaning it. Always unplug the battery charger
when it is not in use.
MINIMUM WIRE SIZE FOR EXTENSION
CORDS FOR 230 VOLT APPLIANCES USING
0-6 AMPS
Cord Length (ft.) 50 100 200 300
Wire Size (AW ) 16 16 16 14

5
Battery Safety
• Do not expose the battery to fire or to
temperatures over 176º F (80º C). Doing so
could cause an explosion.
• Handle batteries with care. Do not short the battery
with conductive materials, such as rings, bracelets,
keys, etc. Shorting the battery may cause personal
injury, damage to the battery or a fire.
• When the battery is not in use, keep it away
from small metal objects, such as paper clips,
coins, nails, etc. These items could connect one
terminal to another and short the battery.
• Do not attempt to charge a cracked or damaged
battery.
• Do not use a damaged or modified battery.
Doing so could result in a fire, explosion or
personal injury.
WARNING: The battery may
present a risk of fire or chemical burn if
mistreated. Do not disassemble, overheat
or incinerate the battery. The battery may
develop a small leak under extreme usage
or temperature conditions.
If battery fluid contacts skin:
- Immediately wash the area with soap
and water.
- Neutralize the battery fluid with a mild
acid (lemon juice, vinegar, etc.).
- Seek immediate medical attention.
If battery fluid gets in the eyes:
- Immediately flush the eyes with clean
water for at least 15 minutes.
- Seek immediate medical attention.
DISPOSING OF DAMAGED OR WORN-OUT
BATTERIES
WARNING: To prevent
contamination of the environment, contact
your local waste disposal agency for
specific instructions before disposing of
damaged or worn-out lithium-ion batteries.
Take batteries to a local recycling and/or
disposal center, certified for lithium-ion
battery disposal.
WARNING: Do not use broken or
cracked batteries, even if there isn't
leakage. Replace damaged or worn-out
batteries with new batteries. DO NOT
ATTEMPT TO REPAIR BATTERIES! Repair
attempts may result in severe personal
injury, due to explosion or electrical shock.
WARNING: The following toxic and
corrosive material is used in this unit's
battery:
LITHIUM-ION, a toxic material.
To avoid personal injury and damage to the
environment:
• Do not attempt to remove or destroy any of the
battery components. Do not open or mutilate
the battery. If a leak develops, released
electrolytes are corrosive and toxic. Do not get
the solution in your eyes or on your skin, and do
not swallow it.
• Do not dispose of the battery in the regular
household trash.
• Do not dispose of the battery in a fire. The cell
may explode.
• Do not dispose of the battery where it will
become part of any waste landfill or municipal
solid waste stream.
• Cover the battery terminals with heavy-duty
adhesive tape.
• Dispose of the battery according to local and
national regulations.
• Dispose of the battery promptly.

6
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.
• Use the unit only in daylight or good artificial light.
• Use the right tool. Only use this tool for its
intended purpose.
• Always hold the unit with a firm grip when
operating.
• 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 hair, face, hands, feet and all other body
parts away from moving parts and openings. Do
not touch or try to stop moving parts.
• Do not touch the motor or heat sink. 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.
• Before setting the unit down, always make sure the
motor is off and all moving parts have stopped.
• Avoid starting the unit unintentionally. Make sure
the throttle lockout is in the locked position
before installing or removing the battery. Never
carry the unit with fingers on the throttle control.
• Remove the battery from the unit when it is not
in use.
• Do not use the unit if the throttle lockout and
throttle control do not start and stop the unit.
WARNING: To reduce the risk of
electric shock, do not expose the unit to rain
or wet conditions. Store the unit indoors.
• If the unit strikes or becomes entangled with a
foreign object, stop the motor immediately,
remove the battery and check for damage. If
damaged, do not restart or operate the unit until
it is repaired. Do not operate the unit with loose
or damaged parts.
• 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. Stop the motor, remove the
battery and allow the unit to cool. Carefully
remove vegetation and other debris that could
block moving parts.
• If the unit starts to vibrate abnormally, stop the
motor, remove the battery and allow the unit to
cool. Inspect the unit for the cause of the vibration.
Vibration is generally an indicator of trouble.

7
TRIMMER SAFETY
• Only use the trimming line described in the
Specifica ions 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.
• 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.
• Adjust the handle to provide the best grip, if
applicable.
• Make sure the cutting head is not in contact
with anything before starting the unit.
• Always hold the unit with both hands when
operating. Using only one hand could lead to a
loss of control and result in serious personal injury.
• Keep hands and feet away from the cutting area.
OTHER SAFETY WARNINGS
• Maintain the unit with care.
• Do not perform maintenance procedures other
than those described in this manual. Do not
attempt to repair the unit; there are no user-
serviceable parts inside. All service, other than
the maintenance procedures described in this
manual, should be performed by an authorized
service dealer.
• If the unit is not working as it should, has been
dropped, damaged, left outdoors or dropped
into water, do not use the unit.
• Never remove, modify or make inoperative any
safety device furnished with the unit.
• Before inspecting, maintaining, cleaning,
storing, transporting or replacing any parts on
the unit:
1. Stop the motor. Refer to S ar ing and S opping.
2. Wait for all moving parts to stop.
3. Remove the battery.
4. Allow the unit to cool.
• Secure the unit while transporting.
• 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. Avoid getting water in the motor and
electrical connections. Keep handles dry and
clean (free from debris, oil and grease). Clean the
unit after each use. Refer to Cleaning and S orage.
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

8
• 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.
• WEAR FOOT PROTECTION
Always wear heavy-duty, non-slip
footwear when operating this unit.
• WEAR HAND PROTECTION
Always wear heavy-duty, non-slip
gloves when handling this unit.
• HANDLE POSITION
Make sure the handle is positioned
beyond the end of the safety label.
V• VOLTS - Voltage
A• AMPERES - Current
Hz • HERTZ - Frequency (cycles per
second)
AC • ALTERNATING CURRENT - Type of
current
or DC
• DIRECT CURRENT - Type of current
Ah • AMPERE-HOUR - Measure of
charge capacity
Wh • WATT-HOUR - Measure of energy

9
SYMBOL MEANING SYMBOL MEANING
• DO NOT USE IN THE RAIN
WARNING: Avoid dangerous
environments. Never operate the unit
in the rain or in damp or wet
conditions. Moisture is a shock hazard.
• DO NOT DISPOSE IN HOUSEHOLD
TRASH
Recycle the battery or dispose of the
battery according to local and
national regulations.
• THROWN OBJECTS CAN CAUSE
SEVERE INJURY
WARNING: Small objects can
be propelled at high speed, causing
injury.
Min. 50 ft
15 m
• EEP 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 the
motor or heat sink. You may get
burned. These parts get extremely
hot from operation. When turned off,
they remain hot for a short time.
• SHARP BLADE
WARNING: There is a sharp
blade on the cutting head shield. To
prevent serious injury, do not touch
the line cutting blade.
• DO NOT USE METAL BLADES
WARNING: To prevent serious
injury, do not replace the cutting head
with rigid or metal blades.

10
Battery*
Battery Charger*
Trimmer
NOW YOUR UNIT
APPLICATIONS
• Cutting grass and light weeds
• Decorative trimming around trees, fences, etc.
ASSEMBLY TOOLS REQUIRED:
• T-20 Torx® Screwdriver
• Flat-head Screwdriver
Charge Meter
Button
Charge Meter
Lights
Terminals
LED
Charging Dock
Power Cord
Terminals
Cutting Head
Shield
Cutting Head
Line Cutting Blade
Motor
Handle
Shaft Grip
Shaft Housing
Throttle Control
Throttle Lockout
Heat Sink
Battery Latch Battery Port
Boost Button
Power Meter
Shoulder Strap / Harness Loop
*Battery and Battery Charger Sold Separately

11
SPECIFICATIONS
Approximate Unit Weight (without the battery). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.25 - 9.25 lbs. (3.7 - 4.2 kg)
Trimmer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bump Head
Trimming Line Diameter*. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.080 to 0.095 in. (2.03 to 2.41 mm)
Cutting Path Diameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 in. (40.6 cm)
Compatible Battery Type (Model 4144) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V, 3.69 Ah Lithium-Ion Battery (20 Cells)
Compatible Battery Type (Model 6216) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V, 5.53 Ah Lithium-Ion Battery (20 Cells)
Approximate Battery Weight (Model 4144) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.25 - 3.75 lbs. (1.5 - 1.7 kg)
Approximate Battery Weight (Model 6216) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.25 - 4.75 lbs. (1.9 - 2.2 kg)
Optimum Charging Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32° to 104° F (0° to 40° C)
Battery Charger Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230 V 50 Hz AC only
Battery Charger Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 A 42 V DC
Approximate Charging Time (Model 4144). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 minutes
Approximate Charging Time (Model 6216). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 minutes
Approximate Battery Charger Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.75 - 3.25 lbs. (1.2 - 1.5 kg)
Noise Emission Levels (measured in accordance with EN 60335-1 and EN 50636-2-91):
Sound Power Level (LwA)** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95.6 dB(A)
Sound Pressure Level (at the operator’s ear) (LpA)** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80.3 dB(A)
Sound Pressure Level (bystander, at 24.6 ft. (7.5 m)) (LpA)*** . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69.0 dB(A)
Vibration Levels (ah) (measured in accordance with EN 60335-1 and EN 50636-2-91)****:
Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.76 m/s2
Shaft rip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.59 m/s2
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.
*Use 0.080 in. (2.03 mm) diameter line for light-duty jobs and maximum runtime.
*Use 0.095 in. (2.41 mm) diameter line for heavy-duty jobs and a small compromise in runtime.
**The reported levels are within the standard deviation (KpA) of 1.6 dB(A).
***Tested in compliance with the Protection of the Environment Operations (Noise Control) Regulation 2008 for New South Wales, Australia.
****The reported levels are within the standard deviation (K) of 1.5 m/s2.

12
ASSEMBLY
INSTALLING THE CUTTING HEAD SHIELD
1. Slide the cutting head shield onto the mount bracket (Fig. 1).
Slide the cutting head shield at an angle. Make sure that the
support tab on the cutting head shield is inserted into the groove
on the mount bracket (Fig. 2).
2. Rotate the cutting head shield down onto the mount bracket
(Fig. 3). Make sure that the alignment tab is inserted into the slot
on the mount bracket (Fig. 3).
3. Insert the screws (x2) into the holes on the cutting head shield
(Fig. 4). Tighten the screws by hand until they are finger tight.
4. Tighten the screws with a T20 Torx® screwdriver until the
cutting head shield is firmly in place.
WARNING: To prevent serious personal injury, never
operate the unit without the cutting head shield in place.
Fig. 4
Screw (x2) Hole (x2)
Fig. 3
Slot
Alignment Tab
Fig. 2
Support Tab
Groove
Fig. 1
Mount Bracket
Cutting Head
Shield

13
INSTALLING AND ADJUSTING THE HANDLE
Installing the Handle
1. Push the handle down onto the shaft housing (Fig. 5). Make sure
the bolt hole faces to the right (Fig. 5).
2. Insert the bolt into the bolt hole and push it through (Fig. 5).
Tighten the bolt with a flat-head screwdriver, but do not tighten
the bolt completely .
3. Hold the unit in the operating position (Fig. 12) and move the
handle to a comfortable location (Fig. 5). Make sure the handle is
positioned beyond the end of the safety label (Fig. 5).
4. Tighten the bolt with a flat-head screwdriver until the handle is
secure.
Adjusting the Handle
If the handle requires adjustment:
1. Loosen the bolt with a flat-head screwdriver (Fig. 5).
NOTE: If the handle was pre-installed under the shaft housing,
rotate the handle until it is in the proper upright position (Fig. 5).
2. Hold the unit in the operating position (Fig. 12) and move the
handle to a comfortable location (Fig. 5). Make sure the handle is
positioned beyond the end of the safety label (Fig. 5).
3. Tighten the bolt with a flat-head screwdriver until the handle is
secure.
Fig. 5
Bolt Hole
Handle
Shaft
Housing
Bolt
Safety Label

14
WALL-MOUNTING THE CHARGER (OPTIONAL)
The battery charger can be mounted to a permanent surface, such
as a wall or work bench. Use mounting fasteners (not included)
capable of supporting the combined weight of the battery and
battery charger. Wall-mounting holes are located on the bottom of
the charger (Fig. 6).
Fig. 6
Wall-Mounting
Holes
CHARGING THE BATTERY
NOTE: The battery is not shipped fully charged.
NOTE: Lithium-ion batteries will not develop a memory and may be
charged at any time.
For maximum run time, fully charge the battery before each use.
1. Plug the battery charger into an appropriate power outlet.
2. Insert the battery into the charging dock (Fig. 7). The LED should
illuminate (Fig. 8). If it does not:
• Make sure the battery is fully inserted into the charging dock.
• Make sure the battery charger is fully plugged into an
appropriate power outlet.
• Make sure the power outlet is functioning by testing it with
another electrical device.
3. Examine the LED. The LED will indicate the battery status:
•Green (blinking): The battery is charging. Charge the battery
until the green light stops blinking.
•Green (constant): The battery is fully charged.
•Red (blinking): The battery and/or charger are too hot or too
cold. Make sure the battery and charger are in an environment
between 32° and 104° F (0° and 40° C). Allow time for the
battery and/or charger to warm up or cool down.
•Red (constant): The battery is no longer functional. Refer to
the Warran y section for replacement information.
4. Once the battery is fully charged, remove it from the battery
charger. Optionally, the battery can be stored in the battery
charger, but the battery charger should be unplugged from the
power outlet.
Fig. 7
Battery
Charging Dock
Fig. 8
LED

15
INSTALLING AND REMOVING THE BATTERY
Installing the Battery
1. rasp the shaft grip firmly. DO NOT press the throttle lockout or
squeeze the throttle control. Refer to S ar ing and S opping.
2. Slide the battery into the battery port (Fig. 9). Push the battery
firmly until the battery locks into place (Fig. 9). There should be
an audible “click” and the battery latch should be in the upright
position (Fig. 9).
Removing the Battery
1. rasp the shaft grip firmly. DO NOT press the throttle lockout or
squeeze the throttle control. Refer to S ar ing and S opping.
2. Press the battery latch down to unlock the battery (Fig. 9).
3. Pull the battery out of the battery port (Fig. 9).
WARNING: Avoid accidentally starting the unit. To
prevent serious injury, DO NOT press the throttle lockout
or squeeze the throttle control when installing or removing
the battery. Refer to S ar ing and S opping. Remove the
battery from the unit when it is not in use.
Fig. 9
Battery
Battery Latch
Shaft Grip
Battery Port
STARTING AND STOPPING
STARTING INSTRUCTIONS
To prevent the motor from starting accidentally, this unit has a
throttle lockout. The throttle control cannot be squeezed unless the
throttle lockout is also engaged.
1. Install the battery. Refer to Ins alling he Ba ery.
2. Press and hold the throttle lockout (Fig. 10).
3. Continue to hold the throttle lockout. Squeeze the throttle
control to start the motor (Fig. 10).
4. Continue to hold the throttle lockout and squeeze the throttle
control. Squeeze the throttle control to the degree needed for
the operation.
STOPPING INSTRUCTIONS
1. Release the throttle control and wait for all moving parts to
come to a complete stop (Fig. 10).
Fig. 10
Throttle Lockout
Throttle Control

16
OPERATION
USING THE BOOST BUTTON
Press the boost button to switch between MAX and ECO modes, as
needed (Fig. 13).
•MAX mode provides maximum power for tough jobs.
•ECO mode conserves energy for maximum run time. ECO mode
is appropriate for most jobs.
NOTE: The unit will reset to ECO mode a few seconds after the
motor is turned off.
Fig. 13
CHEC ING THE BATTERY CHARGE LEVEL
Press the charge meter button on the battery. The number of lights
that illuminate will indicate the current charge level of the battery
(Fig. 11). If all four lights are dark, charge the battery before any
further use.
NOTE: While in use, lithium-ion batteries provide power with
minimal power fade. When the battery is fully discharged, it will
immediately cut power to the unit and require charging. Fig. 11
Charge Meter
Button
75% - 100%
50% - 75%
25% - 50%
0% - 25%
WARNING: Do not expose power tools to rain or wet
conditions.
HOLDING THE UNIT
• Stand in the operating position (Fig. 12). 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.
Fig. 12
Boost Button
WARNING: Always wear eye, hearing, hand, foot and body
protection to reduce the risk of injury when operating this unit.
Wear a face mask or dust mask if the operation is dusty.

17
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
• Remove the battery from the unit when it is not in use.
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. 15).
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 motor.
To release more line, lightly tap the bump knob on the ground (Fig.
14) while operating the unit at high speed. For best results, tap the
bump knob on bare ground or hard soil.
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. This may lead to serious personal injury or
damage to the unit.
Fig. 14
Bump nob
Fig. 15

18
MAINTENANCE
WARNING: To prevent serious injury, never perform
maintenance on the unit while it is running. Always remove
the battery to prevent the unit from starting accidentally.
Always allow the unit to cool before maintaining the unit.
Before maintaining the battery charger, always unplug it
from the power outlet.
REPLACING THE TRIMMING LINE
NOTE: Only use the type of trimming line described in the
Specifica ions section.
NOTE: Always use the correct line length when installing trimming
line. The line may not release properly if the line is too long.
NOTE: The cutting head will remain attached to the unit and the
inner reel will remain attached to the outer spool.
NOTE: DO NOT disassemble the cutting head to install new line.
Installing New Trimming Line
1. If necessary, remove any old trimming line and/or obstructions
from the cutting head. Refer to Removing Old Trimming Line and
Obs ruc ions.
2. Cut one 16 foot (4.9 m) length of new trimming line. Cut one end
at a 30 degree angle (Fig. 17).
3. Turn the bump knob to align the load arrows on the bump knob
with the load lines on the outer spool (Fig. 16).
NOTE: Turn the bump knob slowly for greater control. Turn the bump
knob in the direction indicated on the bump knob. It will only turn
one way. DO NOT push the bump knob down while turning.
4. Insert the angled end of the trimming line through an eyelet and
into the small hole in the inner reel (Fig. 17). Push the line
through the cutting head until a few inches protrude from the
other side. Pull the line through the cutting head until the lengths
of line on either side of the cutting head are equal.
5. Turn the bump knob to wind the line until about 5 inches (12.5
cm) protrude from each side of the cutting head (Fig. 18).
NOTE: If too little line is left protruding, it could retract inside the
cutting head.
Removing Old Trimming Line and Obstructions
1. When the trimming line runs out, the last piece should automatically
eject from the cutting head. If it does not, push the bump knob
down and pull the remaining line out of the cutting head.
2. If the line will not come out or the cutting head is otherwise
obstructed:
a. Firmly press both tabs to disconnect the bump knob from the
outer spool (Fig. 19). DO NOT press the tabs with a
screwdriver or other object.
b. Remove the bump knob. DO NOT disassemble any other
parts of the cutting head.
c. Remove any old trimming line and/or obstructions.
d. Use a clean cloth to clean the inside of the cutting head.
e. Make sure the spring is securely connected to the outer spool
(Fig. 19). Align the tabs on the bump head with the holes on
the outer spool (Fig. 19). Push the bump head onto the outer
spool until the tabs securely snap into the holes.
WARNING: Never use metal-reinforced line, wire, chain or
rope. These can break off and become dangerous projectiles.
Fig. 19
Outer S ool
Inner Reel
Bump nob
Tab
Hole
30º
X
Fig. 17
Eyelet
Trimming Line
Fig. 18
Fig. 16
Bump nob
Load Arrow
Outer S ool
Bump nob
Load Line
Small Hole
S ring
5 in. (12.5 cm)
5 in. (12.5 cm)

19
MAINTAINING THE BATTERY CHARGER
• Keep the battery charger clean and clear of debris. Do not allow
foreign material into the charging dock or onto the terminals (Fig.
20). Inspect the battery charger for foreign material before each use.
• Make sure the charger has not been shorted by debris. Inspect
the terminals for soot and signs of melting. Do not attempt to
use a shorted charger.
Fig. 20
Terminals
Charging Dock
CLEANING AND STORAGE
CLEANING
• Use a small brush or clean, dry cloth to clean the outside of the
unit, battery and battery charger.
STORAGE
• Remove the battery from the unit.
• Allow the unit, battery and/or battery charger to cool.
• Thoroughly clean the unit, battery and battery charger. Inspect
them for any loose or damaged parts. Replace damaged parts
and tighten loose screws, nuts or bolts.
• Lock up the unit, battery and battery charger to prevent
unauthorized use or damage.
• Store the unit, battery and battery charger indoors, in a dry, well-
ventilated area.
• Store the battery and battery charger in an area that is between
65 and 75˚ F (18 and 24˚ C).
• Always unplug the battery charger when it is not in use.
• Store the unit, battery and battery charger out of the reach of
children.
• If the battery is left unused for more than two months, fully
charge the battery before use.
WARNING: To prevent serious injury, never clean the
unit while it is running. Always remove the battery to
prevent the unit from starting accidentally. Always allow the
unit to cool before cleaning the unit. Always unplug the
battery charger before cleaning the battery charger.
WARNING: To prevent serious injury, do not use water
to clean the unit, battery or battery charger. Do not use
strong detergents. Household cleaners that contain
aromatic oils such as pine and lemon, and solvents such
as kerosene, can damage plastic.

20
Device protection systems have engaged Remove and reinstall the battery
The cutting head is dirty or bound with grass Stop the motor, remove the battery and clean the cutting head. If
necessary, open the cutting head and clean inside.
The cutting head is out of line Stop the motor, remove the battery and refill the cutting head with
new line
The line is twisted or bound up Stop the motor, remove the battery, remove the line, then refill the
cutting head with line
Not enough line is extended
Stop the motor, remove the battery and allow the unit to cool. Push
the bump knob and pull the line until 4 inches (102 mm) is outside of
the cutting head.
There is oil, cleaner or lubricant in the cutting head Stop the motor, remove the battery and allow the unit to cool. Clean
and thoroughly dry the cutting head.
The battery charger is not plugged in Plug the battery charger into a 240V 50hz AC source
The battery is not fully inserted into the battery charger Remove and then reinsert the battery into the battery charger
completely
The battery and/or charger are too hot or too cold
Make sure the battery and charger are in an environment between
32° and 104° F (0° and 40° C). Allow time for the battery and/or
charger to warm up or cool down.
The battery and/or battery charger are no longer functional Refer to the Warran y section for replacement information
TROUBLESHOOTING
The battery lacks sufficient charge Charge the battery completely
The battery is not installed correctly Remove and reinstall the battery
The throttle lockout was not engaged Press and hold the throttle lockout before squeezing the throttle
control
PROBLEM SOLUTION
The battery is not fully charged Charge the battery completely
The battery and/or battery charger are no longer functional Refer to the Warran y section for replacement information
If further assistance is required, contact an authorized service dealer.
THE CUTTING HEAD WILL NOT ADVANCE LINE
THE CUTTING LINE ADVANCES UNCONTROLLABLY
THE BATTERY WILL NOT CHARGE
THE BATTERY DIES QUIC LY
THE MOTOR WILL NOT RUN
THE MOTOR STOPS WHILE IN USE AND THE POWER METER BLIN S