Ryobi OHT1851R User manual

ORIGINAL INSTRUCTIONS
Cordless Hedge
Trimmer
OHT1851R

Important!
It is essential that you read the instructions in this manual before assembling,
operating and maintaining this machine.
Subject to technical modification.

1
GENERAL SAFETY WARNINGS
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.
Save all warnings and instruction for future reference.
The term “power tool” in the warnings refers to your mains-
operated (corded) power tool or battery-operated (cordless)
power tool.
WORK AREA SAFETY
ŶKeep work area clean and well lit. Cluttered or dark
areas invite accidents.
ŶDo not operate power tools in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
ŶKeep children and bystanders away while operating
a power tool. Distractions can cause you to lose
control.
ELECTRICAL SAFETY
ŶPower tool plugs must match the outlet. Never
modify the plug in any way. Do not use any adapter
plugs with earthed (grounded) power tools.
Unmodified plugs and matching outlets will reduce risk
of electric shock.
ŶAvoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed or grounded
ŶDo not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
ŶDo not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electric shock.
ŶWhen operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the risk of electric
shock
ŶIf operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD reduces the risk of
electric shock.
PERSONAL SAFETY
ŶStay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under the
influence of drugs, alcohol or medication. A moment
of inattention while operating power tools may result in
serious personal injury.
ŶUse personal protective equipment. Always wear
eye protection. Protective equipment such as dust
mask, non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce
personal injury.
ŶPrevent unintentional starting. Ensure the switch
is in the off-position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energising power tools that have the switch
on invites accidents.
ŶRemove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to
a rotating part of the power tool may result in personal
injury.
ŶDo not overreach. Keep proper footing and balance
at all times. This enables better control of the power in
unexpected situations.
ŶDress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves away
from moving parts. Loose clothes, jewellery or long
hair can be caught in moving parts.
ŶIf devices are provided for the connection of dust
extraction and collection facilities, ensure these are
connected and properly used. Use of dust collection
can reduce dust-related hazards.
POWER TOOL USE AND CARE
ŶDo not force the power tool. Use the correct power
tool for your application. The correct power tool will
do the job better and safer at the rate for which it was
designed.
ŶDo not use the power tool if the switch does not turn
it on and off. Any power tool that cannot be controlled
with switch is dangerous and must be repaired.
ŶDisconnect the plug from the power source and/or
the battery pack from the power tool before making
any adjustments, changing accessories, or storing
power tools. Such preventive safety measures reduce
the risk of starting the power tool accidentally.
ŶStore idle power tools out of the reach of children
and do not allow persons unfamiliar with the power
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained
users.
ŶMaintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and any
other condition that may affect the power tool’s
operation. If damaged, have the power tool repaired
before use. Many accidents are caused by poorly
maintained power tools.
ŶKeep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
ŶUse the power tool, accessories and tool bits etc.
in accordance with these instructions, taking into
account the working conditions and the work to
be performed. Use of the power tool for operations
different from those intended could result in a
hazardous situation.

2
BATTERY TOOL USE AND CARE
ŶRecharge only with the charger specified by the
manufacturer. A charger that is suitable for one type
of battery pack may create a risk of fire when used with
another battery pack.
ŶUse power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire
ŶWhen battery pack is not in use, keep it away from
other metal objects, like paper clips, coins, keys,
nails, screws or other small metal objects, that can
make a connection from one terminal to another.
Shorting the battery terminals together may cause
burns or a fire.
ŶUnder abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact
accidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation or
burns.
SERVICE
ŶHave your power tool serviced by a qualified repair
person using only identical replacement parts. This
will ensure that safety of the power tool is maintained.
HEDGE TRIMMER SAFETY WARNINGS
ŶKeep all parts of the body away from the cutter
blade. Do not remove cut material or hold material
to be cut when blades are moving. Make sure the
switch is off when clearing jammed materials.
A moment of inattention while operating the hedge
trimmer may result in serious personal injury.
ŶCarry the hedge trimmer by the handle with cutter
blade stopped. When transporting or storing the
hedge trimmer always fit the cutting device cover.
Proper handling of the hedge trimmer will reduce
possible personal injury from the cutter blades.
ŶHold the power tool by insulated gripping surface
only, because the cutter blade may contact hidden
wiring. Cutter Blades contacting a “live” wire may make
exposed metal parts of the power tool “live” and could
give the operator an electric shock.
ADDITIONAL SAFETY RULES
ŶClear the work area before each use. Remove all
objects such as cords, lights, wire, or string which can
be thrown or become entangled in the cutting means.
ŶBeware of thrown objects; keep all bystanders, children,
and pets at least 15m away from work area.
ŶDo not operate in poor lighting. The operator requires a
clear view of the work area to identify potential hazards.
ŶInspect the machine before each use. Check for loose
fasteners, fuel leaks, etc. Make sure all guards, and
handles are properly and securely attached. Replace
any damaged parts before use. Check for battery pack
leaks.
ŶDo not modify the machine in any way.
ŶDo not allow children or untrained individuals to use this
unit.
ŶWear full eye and hearing protection while operating the
product. If working in an area where there is a risk of
falling objects, head protection must be worn.
ŶSecure long hair so it is above shoulder level to prevent
entanglement in moving parts.
ŶDo not use this machine when you are tired, ill, or under
the influence of alcohol, drugs, or medication.
ŶKeep firm footing and balance. Do not overreach.
Overreaching can result in loss of balance or exposure
to hot surfaces.
ŶBefore starting the machine, make sure the cutting
blades will not come in contact with anything.
ŶWhile operating the hedge trimmer, always hold it
firmly with both hands by the two handles and ensure
that the operating position is safe and secure. The
manufacturer does not recommend the use of steps or
ladders. If higher trimming is required use and extended
reach tool.
ŶBlades are sharp. When handling the blade assembly,
wear non-slip, heavy-duty protective gloves. Do not
place your hand or fingers between blades or in any
position where they could get pinched or cut. NEVER
touch blade or service unit unless the battery pack is
removed.
ŶSwitch off and remove the battery pack off before:
Ɣadjusting the working position of the cutting device
Ɣcleaning or clearing a blockage
Ɣleaving the product unattended
Ɣchecking, maintenance or working on the machine
ŶDo not force the hedge trimmer through heavy
shrubbery. This can cause the blades to bind and slow
down. If the blades slow down, reduce the pace.
ŶDo not attempt to cut stems or twigs that are larger
than 18 mm thick, or those obviously too large to feed
into the cutting blade. Use a non-powered hand saw or
pruning saw to trim large stems.
ŶUse of hearing protection reduces the ability to hear
warnings (shouts or alarms). The operator must pay
extra attention to what is going on in the working area.
WARNING
If the machine is dropped, suffers heavy impact or begins
to vibrate abnormally, immediately stop the machine and
inspect for damage or identify the cause of the vibration.
Any damage should be properly repaired or replaced by
an authorized service centre.
TRANSPORTATION AND STORAGE
ŶStop the machine, remove the battery and allow both to
cool before storing or transporting
ŶClean all foreign material from the product. Store it in a
cool dry and well-ventilated place that is inaccessible to
children. For extra safety, store the battery separately
from the hedge trimmer. Keep away from corrosive
agents such as garden chemicals and de-icing salts.
Do not store outdoors.
ŶCover the blade with the blade protector before storing

3
the unit, or during transportation.
ŶFor transportation, secure the machine against
movement or falling to prevent injury to persons or
damage to the machine.
MAINTENANCE
WARNING
Use only original manufacturer’s replacement parts,
accessories and attachments. Failure to do so can
cause possible injury, poor performance and may void
your warranty.
WARNING
Servicing requires extreme care and knowledge
and should be performed only by a qualified service
technician. For service we suggest you return the
product to your nearest authorized service center for
repair. When servicing, use only identical replacement
parts.
WARNING
The blades are extremely sharp. To prevent personal
injury, exercise extreme caution when cleaning,
lubricating and fitting or removing the blade protector.
ŶRemove the battery before adjusting, maintaining or
cleaning.
ŶYou may make adjustments and repairs described
here. For other repairs, contact the authorized service
agent.
ŶAfter each use, clean the body and handles of the
product with a soft dry cloth.
ŶAfter each use, clean the debris from the blades
with a stiff brush, and then carefully apply a rust
preventative lubricant before refitting the blade
protector. The manufacturer recommends you to use a
rust preventative and lubricant spray to apply an even
distribution and reduce the risk of personal injury from
contact with the blades. For information about suitable
spray product check with your local authorised service
centre.
ŶYou may wish to lubricate the blades lightly before use
if necessary using the above method.
ŶCheck all nuts, bolts and screws at frequent intervals
for proper tightness to ensure the product is in safe
working condition. Any part that is damaged should be
properly repaired or replaced by an authorized service
centre.
INTENDED USE
The product is only intended for use outdoors. For safety
reasons the product MUST be adequately controlled by
using two handed operation.
The product is designed for home or domestic use. It
is intended to cut and trim hedges, shrubs and similar
vegetation.
It should be used in dry, well illuminated conditions.
It is not intended to cut grass, trees or branches. It should
not be used for any other purpose than hedge trimming.
RESIDUAL RISKS
Even when the product is used as prescribed, it is still
impossible to completely eliminate certain residual risk
factors. The following hazards may arise in use and the
operator should pay special attention to avoid the following:
ŶThe blades cannot be guarded whilst cutting. Contact
with the blades can cause serious injury. Keep the
blade away from yourself and others. Cover it with the
blade protector whenever you are not cutting.
ŶInjury caused by vibration. Always use the right tool for
the job, use designated handles and restrict working
time and exposure.
ŶExposure to noise can cause hearing injury. Wear ear
protection and limit exposure
RISK REDUCTION
It has been reported that vibrations from hand-held tools
may contribute to a condition called Raynaud’s Syndrome
in certain individuals. Symptoms may include tingling,
QXPEQHVV DQG EODQFKLQJ RI WKH ¿QJHUV XVXDOO\ DSSDUHQW
upon exposure to cold. Hereditary factors, exposure to
cold and dampness, diet, smoking and work practices are
all thought to contribute to the development of the these
symptoms. There are measures that can be taken by the
operator to possibly reduce the effects of vibration:
ŶKeep your body warm in cold weather. When operating
the unit wear gloves to keep the hands and wrists
warm. It is reported that cold weather is a major factor
contributing to Raynaud’s Syndrome.
ŶAfter each period of operation, exercise to increase
blood circulation.
ŶTake frequent work breaks. Limit the amount of
exposure per day.
If you experience any of the symptoms of this condition,
immediately discontinue use and see your doctor about
these symptoms.
WARNING
Injuries may be caused, or aggravated, by prolonged
use of a tool. When using any tool for prolonged periods,
ensure you take regular breaks.
DESCRIPTION
See page 6.
PARTS
1. Rear handle
2. Trigger
3. Lock button of rotating handle
4. Front handle
5. Operator presence switch
6. Guard
7. Blade
8. Blade cover
9. Battery pack

4
10. Battery latch button
11. Charger
SYMBOLS ON THE PRODUCT
Safety alert
Please read the instructions carefully
before starting the machine.
Wear ear protection.
Wear eye protection.
Always hold the hedge trimmer with
both hands when operating.
Wear non-slip, heavy duty gloves.
To prevent serious injury, do not touch
cutting blades.
Do not expose to rain or damp condition.
%HZDUHRIWKURZQRUÀ\LQJREMHFWV
Keep all bystanders, especially children
and pets, at least 15m away from the
operating area.
Waste electrical products should not
be disposed of with household waste.
Please recycle where facilities exist.
Check with your local authority or retailer
for recycling advice.
95
75
The guaranteed sound pressure level is
shown on this label by 75 dB.
The guaranteed sound power level is
shown on this label by 95 dB.
The following signal words and meanings are intended to
explain the levels of risk associated with this product:
DANGER
Indicates an imminently hazardous
situation, which, if not avoided, will
result in death or serious injury.
WARNING
Indicates a potentially hazardous
situation, which, if not avoided, could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous
situation, which, if not avoided, may
result in minor or moderate injury.
CAUTION
(Without Safety Alert Symbol)
Indicates a situation that may result
in property damage.
SYMBOLS IN THIS MANUAL
Parts or accessories sold separately
Note
Warning

5
x 1
x 1
x 1
OHT1851R

6
3
8910 11
4567 12

7
1
2
1
3
2
4

8
p.9 p.10
p.11 p.12

9
1
2
1
2

10
21
90°90°
45°45°
2
3
1
1
2
3

11
2
1
1
2
3

12
20140519v1
2
1
1
2
3

PRODUCT SPECIFICATIONS
Model OHT1851R
Rated voltage DC 18 volts
No-load speed 1,350 min-1
Stroke rate at no load 2,700 spm
Blade length 500 mm
Cutting capacity 18 mm
Vibration level (in accordance with EN 60745-1 and EN 60745-
2-15)
Vibration total value <2.5 m/s2
Uncertainty of measurement 1.5 m/s2
Noise emission level (in accordance with EN 60745-1 and EN
60745-2-15)
A-weighted sound pressure level 72.0 dB(A)
Uncertainty of measurement 3 dB
A-weighted sound power level 92.0 dB(A)
Uncertainty of measurement 3 dB
Weight without Battery pack 2.7 kg
BATTERY AND CHARGER
Battery pack Not included
Weight -
Charger Not included
Weight -
Compatible battery
pack
ABP1801/ ABP1802/ BPL-1815/ BPL-
1820/ BPL-1820G/ RB18L13/ RB18L15/
RB18L26/ RB18L40
Compatible charger BCL-1800/ BCL1418/BCL14181H/
BCL14183H/
VIBRATION LEVEL
WARNING
The declared vibration value has been measured with a
standard test method and may be used to compare one
tool with another.
The declared vibration value may be used in a
preliminary assessment of exposure.
The vibration emission during actual use of power tool
can differ from the declared total value depending on the
ways in which the tool is used.
Identify safety measures to protect yourself based on an
estimation of exposure in the actual conditions of use,
taking account of all parts of the operating cycle such
as the times when the tool is switched off and when it is
running idle in addition to the trigger time.

Techtronic Industries (Australia) Pty. Ltd.
Level 1, 660 Doncaster Road
Doncaster, VIC 3108, Australia
Techtronic Industries New Zealand Ltd.
18-26 Amelia Earhart Avenue
Mangere, Auckland 2022, New Zealand
960737029-01