Ryobi OHT1845 User manual

ORIGINAL INSTRUCTIONS
Cordless Hedge
Trimmer
OHT1845

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

1
Safety, performance, and dependability have been given
top priority in the design of your cordless hedge trimmer.
INTENDED USE
The cordless hedge trimmer 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.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING
Read all safety warnings, instructions, illustrations
and specifications provided with this power tool.
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
■Keep work area clean and well lit. Cluttered or dark
areas invite accidents.
■Do 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.
■Keep children and bystanders away while operating
a power tool. Distractions can cause you to lose
control.
ELECTRICAL SAFETY
■Power 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.
■Avoid 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
■Do not expose power tools to rain or wet conditions.
Water entering a power tool will increase the risk of
electric shock.
■Do 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.
■When 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
■If 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
■Stay 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.
■Use 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.
■Prevent 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.
■Remove 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.
■Do not overreach. Keep proper footing and balance
at all times. This enables better control of the power in
unexpected situations.
■Dress 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.
■If 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.
■Do not let familiarity gained from frequent use of
tools allow you to become complacent and ignore
tool safety principles. A careless action can cause
severe injury within a fraction of a second.
POWER TOOL USE AND CARE
■Do 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.
■Do 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.
■Disconnect 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.
■Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the power

2
tool or these instructions to operate the power tool.
Power tools are dangerous in the hands of untrained
users.
■Maintain 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.
■Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
■Use 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.
■Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpected situations.
BATTERY TOOL USE AND CARE
■Recharge 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.
■Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury and fire
■When 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.
■Under 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.
■Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire, explosion or
risk of injury.
■Do not expose a battery pack or tool to fire
or excessive temperature. Exposure to fire or
temperature above 130 °C may cause explosion.
■Follow all charging instructions and do not charge
the battery pack or tool outside the temperature
range specified in the instructions. Charging
improperly or at temperatures outside the specified
range may damage the battery and increase the risk
of fire.
SERVICE
■Have 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.
■Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorized service providers.
CORDLESS HEDGE TRIMMER SAFETY WARNINGS
■Keep all parts of the body away from the cutter
blade. Do not remove the cut material or hold the
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.
■Carry 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 reduces possible
personal injury from the cutter blades.
■Hold the power tool by insulated gripping surfaces
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 WARNINGS
■Some regions have regulations that restrict the use of
the product to some operations. Check with your local
authority for advice. Read all instructions.
■Clear the work area before each use. Remove all
objects, such as cords, lights, wires, or strings which
can be thrown or become entangled in the cutting
means.
■Check the hedge for foreign objects, such as wire
fences.
■Exercise additional caution when using the product
near posts, buildings, or other immovable objects.
■Beware of thrown objects; keep all bystanders, children,
and pets at least 15 m away from work area.
■Do not allow children or untrained individuals to use the
product.
■Do not operate in poor lighting. The operator requires a
clear view of the work area to identify potential hazards.
■Ensure all handles and guards are fitted when using
the hedge trimmer. Never attempt to use an incomplete
hedge trimmer or one fitted with an unauthorised
modification.
■Ensure before each use that all controls and safety
devices function correctly. Do not use the product if the
“off” switch does not stop the product.
■Inspect the product before each use. Check for loose
fasteners. Make sure all guards and handles are
properly and securely attached. Replace any damaged
parts before use. Check for battery pack leaks.
■Do not modify the product in any way.
■Wear 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.
■Wear heavy, long trousers, boots, and gloves. Do not
wear loose fitting clothing, short trousers, jewellery of
any kind, or use with bare feet.

3
■Secure long hair so it is above shoulder level to prevent
entanglement in moving parts.
■Use 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.
■Operating similar tools nearby increases both the risk
of hearing injury and the potential for other persons to
enter your working area.
■Do not use the product when you are tired, ill, or under
the influence of alcohol, drugs, or medication.
■Keep firm footing and balance. Do not overreach.
Overreaching can result in loss of balance and can
result in serious injury.
■Keep all parts of your body away from any moving part.
■Before starting the product, make sure the cutting
blades will not come in contact with anything.
■While operating the hedge trimmer, always hold it firmly
with both hands by the two handles. 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 an extended-reach
tool.
■Blades 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 the blade or service the product unless the
battery pack is removed.
■Turn off the product and remove the battery pack. Make
sure all move parts have come to a complete stop:
●before leaving the product unattended
●before cleaning or clearing a blockage
●before adjusting the working position of the cutting
means
●before checking, conducting maintenance, or
working on the product
■Do not force the product through heavy shrubbery. This
can cause the blades to bind and slow down. If the
blades slow down, reduce the pace.
■Do 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.
■Do not operate the product with damaged or excessively
worn blades.
WARNING
If the product is dropped, suffers heavy impact, or begins
to vibrate abnormally, immediately stop the product and
inspect for damage or identify the cause of the vibration.
Any damage should be properly repaired or replaced by
an authorised service centre.
ADDITIONAL BATTERY SAFETY WARNINGS
WARNING
To reduce the risk of re, personal injury, and product
damage due to a short circuit, never immerse your
tool, battery pack or charger in uid or allow a uid to
ow inside them. Corrosive or conductive uids, such
as seawater, certain industrial chemicals, and bleach
or bleach-containing products, etc., can cause a short
circuit.
TRANSPORTATION AND STORAGE
■Stop the product, remove the battery, and allow both to
cool before storing or transporting
■Clean 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.
■Cover the blade with the blade protector before storing
the product, or during transportation.
■For transportation in a vehicle, secure the product
against movement or falling to prevent injury to persons
or damage to the product.
TRANSPORTING LITHIUM BATTERIES
Transport the battery in accordance with local and national
provisions and regulations.
Follow all special requirements on packaging and labelling
when transporting batteries by a third party. Ensure that
no batteries can come in contact with other batteries
or conductive materials while in transport by protecting
exposed connectors with insulating, non-conductive caps
or tape. Do not transport batteries that are cracked or
leaking. Check with the forwarding company for further
advice.
MAINTENANCE
WARNING
Use only original manufacturer’s replacement parts,
accessories, and attachments. Failure to do so can
cause possible injury, contribute to poor performance,
and may void your warranty.
WARNING
Servicing requires extreme care and knowledge
and should be performed only by a qualied service
technician. For service, bring the product to an
authorised service centre. When servicing, use only
identical replacement parts.

4
WARNING
The blades are extremely sharp. To prevent personal
injury, exercise extreme caution when cleaning,
lubricating, and tting or removing the blade protector.
■Remove the battery before adjusting, maintaining, or
cleaning the product.
■You may only make adjustments and repairs
described in this manual. For other repairs, contact
an authorised service agent.
■After each use, clean the body and handles of the
product with a soft, dry cloth.
■After 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 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 an authorised
service centre.
■Lubricate the blades lightly before use if necessary
using the above method.
■Check 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 authorised
service centre.
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:
■injury caused by the blade
–The blade cannot be guarded while cutting. Keep
the blade away from yourself and others. Cover it
with the blade protector when the product is not in
use.
■injury caused by vibration
–Always use the right tool for the job, use designated
handles, and restrict working time and exposure.
■hearing injury caused by exposure to noise
–Wear ear protection and limit exposure.
RISK REDUCTION
It has been reported that vibrations from handheld tools
may contribute to a condition called Raynaud’s Syndrome.
Symptoms may include tingling, numbness, and blanching
of the ngers, usually apparent 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 these symptoms. There are measures
that can be taken by the operator to possibly reduce the
effects of vibration:
■Keep 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.
■After each period of operation, exercise to increase
blood circulation.
■Take 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 physician.
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.
KNOW YOUR PRODUCT
See page 7.
1. Rear handle
2. Trigger
3. Front handle
4. Operator presence switch
5. Blade guard
6. Blade
7. Blade cover
SYMBOLS ON THE PRODUCT
Safety alert
Please read the instructions carefully
before starting the product.
Wear non-slip, heavy duty gloves.
Beware of thrown or ying objects.
Keep all bystanders, especially children
and pets, at least 15m away from the
operating area.
Wear ear protection.
Wear eye protection.
Always hold the hedge trimmer with
both hands when operating.
To prevent serious injury, do not touch
cutting blades.

5
Do not expose to rain or damp condition.
97
The guaranteed sound power level is
shown on this label by 97 dB.
Conforms to all regulatory standards in
the country in the EU where the product
is purchased.
EurAsian Conformity Mark
Ukrainian mark of conformity
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.
SYMBOLS IN THIS MANUAL
Note
Warning
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.

6
x 1
x 1
x 1
RHT184520
RHT184513S

7
OHT1845
x 1
x 1
x 1

8
123456
7

9
1
2
1
3
2
4

10
p.11 p.13
p.14

11
1
2

12
1
2
3
4

13
1
2
1
2
3

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2
3
20180122v1d10
1
2
1

15
STORAGE
PRODUCT SPECIFICATIONS
Cordless Hedge Trimmer
Model OHT1845 / RHT184520 /
RHT184513S
Voltage 18 volts DC
No-load speed 1500 RPM
Blade length 450 mm
Cutting capacity 18 mm
Vibration level (in accordance with EN 60745-1 and EN 60745-
2-15)
Vibration total value <2.9 m/s2
Vibration emission value
front handle 1.4 m/s2
rear handle 1.4 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 79.1 dB(A)
Uncertainty of measurement 2.5 dB
A-weighted sound power level
91.5 dB(A)
Uncertainty of measurement 2.5 dB
Weight without battery pack 2.5 kg
Weight with heaviest battery pack 3.2 kg
BATTERY AND CHARGER
Model OHT1845 RHT184520 RHT184513S
Battery pack not included RB18L20 RB18L13
Weight 0.45 kg 0.42 kg
Charger not included RC18115 RC18115
Compatible
battery
packs
RB18L13, RB18L15, RB18L20, RB18L25, RB18L26,
RB18L40, RB18L50
Compatible
charger
BCL-1800, BCL1418, BCL1418IV, BCL14181H,
BCL14183H, BCS618G, RC18150H, RC18627, RC18115,
RC18120
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.

RYOBI®WARRANTY APPLICATION CONDITIONS
In addition to any statutory rights resulting from the purchase, this product is covered by a warranty as stated below.
1. The warranty period is 24 months for consumers and commences on the date the product was purchased. This date
has to be documented by an invoice or other proof of purchase. The product is designed and dedicated to consumer
and private use only. So there is no warranty provided in case of professional or commercial use. This warranty applies
only on new products.
2. There is a possibility to extend for a part of the range of power tools (AC/DC) the warranty period over the period
described above using the registration on the www.ryobitools.eu website. The eligibility of products for extended
warranty is clearly displayed in stores and / or on packaging and is contained within the product documentation. The
end user is required to register his/her newly-acquired products online within 30 days from the date of purchase. The
end user may register for the extended warranty in his/her country of residence if listed on the online registration form
where this option is valid. Furthermore, end users must give their consent to the storage of their personal data that is
required to be entered online. They must also accept the terms and conditions. The registration confirmation receipt,
which is sent out by e-mail, and the original invoice showing the date of purchase will serve as proof of the extended
warranty.
3. The warranty covers all defects of the product during the warranty period due to faults in workmanship or material at
the purchase date. The warranty is limited to repair and/or replacement and does not include any other obligations
including but not limited to incidental or consequential damages. The warranty is not valid if the product has been
misused, used contrary to the instruction manual, or has been incorrectly connected to a power supply. This warranty
does not apply to:
–any damage to the product that is the result of improper or lack of maintenance
–any product that has been altered or modified
–any product where original identification (trade mark, serial number) markings have been defaced, altered or
removed
–any damage caused by non-observance of the instruction manual
–any product not displaying the CE approval mark on the rating plate
–any product that has been attempted to be repaired by a non-authorised warranty service centre or without prior
authorisation by Techtronic Industries
–any product connected to an improper power supply (amps, voltage, frequency)
–any product used with inappropriate fuel mixture (fuel, oil, Ratio of oil / fuel mixture)
–any damage caused by external influences (water, chemical, physical, shocks) or foreign substances
–normal wear and tear spare parts
–inappropriate use, overloading of the tool
–use of non-approved accessories or parts
–Accessories provided with the tool or purchased separately including but not limited to blades, saw chains, cutting
lines etc.
–Any periodic adjustments to or maintenance cleaning of carburetors
–Components (parts and accessories) subject to natural wear and tear, including but not limited to bump knobs,
drive belts, clutch, blades of hedge trimmers or lawn mowers, harness, cable throttle, carbon brushes, power cord,
tines, felt washers, hitch pins, blower fans, blower and vacuum tubes, vacuum bag and straps, guide bars, saw
chains, hoses, connector fittings, spray nozzles, wheels, spray wands, inner reels, outer spools, cutting lines, spark
plugs, air filters, gas filters, mulching blades, etc.
4. For servicing, the product must be sent or presented to a RYOBI authorised service station listed for each country in the
following list of service station addresses. In some countries your local RYOBI dealer undertakes to send the product
to the RYOBI service organisation. When sending a product to a RYOBI service station, the product should be safely
packed without any dangerous contents such as petrol, marked with sender’s address and accompanied by a short
description of the fault.
5. A repair / replacement under this warranty is free of charge. It does not constitute an extension or a new start of the
warranty period. Exchanged parts or products become our property. In some countries delivery charges or postage
will have to be paid by the sender. Your statutory rights arising from the purchase of the product remain unaffected.
6. This warranty is valid in the European Community, Switzerland, Iceland, Norway, Liechtenstein, Turkey and Russia.
Outside these areas, please contact your authorised RYOBI dealer to determine if another warranty applies.

ACD PLANT LTD
145 Southbank Road
Coundon
Coventry, West Midlands
CV6 1FG
Phone: [phone]
Email: [email protected]
Web: www.acdplant.co.uk
CBS Power Tools Limited
Unit 4, V P Square
Storeys Bar Rd, Fengate
Peterborough, Cambridgeshire
PE1 5YS
Phone: [phone]
Email: [email protected]
Web: www.cbspowertools.com
C D Powertools
76 Old Road
Churwell Morley, Leeds
LS27 7TH
Phone: [phone]
Email: [email protected]
Web: www.cdpowertools.co.uk
C J Sinclair Limited
44 Victoria Road
St Peters
Broadstairs, Kent
CT10 2UG
Phone: [phone]
Email: [email protected]
Web: www.cjsinclairltd.co.uk
Powertech Ind Ltd
Unit 2C, Ellison Road
Norwood Ind, Killamarsh
Shefeld, South Yorkshire
S21 2JG
Phone: [phone]
Email: [email protected]
Web: www.powertech-industrial.co.uk
RYCKO Technical Services LTD
104 Green Lane
St Albans, Herts
AL3 6EX
Phone: [phone]
Email: [email protected]
Web: www.ryckotechnical.com
ToolTech Industrial Equipment
227 E Dunhill Road, Macosquin
Coleraine, Co Londonderry
BT514LQ
Phone: [phone]
Email: [email protected]
AUTHORISED SERVICE CENTRES
For an updated list of authorised service centres, visit http://en.ryobitools.eu/header/service-and-support/service-agents.

DECLARATION OF CONFORMITY
Techtronic Industries GmbH
Max-Eyth-Straße 10, 71364 Winnenden, Germany
Herewith we declare that the product
Cordless Hedge Trimmer
Brand: RYOBI
Model number: OHT1845 / RHT184520 / RHT184513S
Serial number range: 46249902000001 - 46249902999999
is in conformity with the following European Directives and harmonized standards
2006/42/EC, 2014/30/EU, 2000/14/EC, 2005/88/EC, 2011/65/EU, EN 55014-1:2017, EN 60745-1:2009
+A11:2010, EN 60745-2-15:2009+A1:2010, EN ISO 3744:2010, EN 50581:2012, EN 55014-2:2015
Measured sound power level: 90.8 dB(A)
Guaranteed sound power level: 97 dB(A)
Conformity assessment method to Annex V Directive 2000/14/EC amended by 2005/88/EC.
Andrew John Eyre (BEng, CEng, MIET)
Vice President, Regulatory & Safety
Winnenden, Jan. 20, 2018
Authorised to compile the technical le:
Alexander Krug, Managing Director
Techtronic Industries GmbH
Max-Eyth-Straße 10, 71364 Winnenden, Germany