Ryobi RHT-500 Operation manual

RHT-500

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THANK YOU FOR BUYING A RYOBI PRODUCT
To ensure your safety and satisfaction, carefully read
through this OWNER’S MANUAL before using the
product.
3
General Safety Rules
SAVE THESE INSTRUCTIONS
WARNING! Read all instructions Failure to follow all
instructions listed below may result in electric shock, fire
and/or serious injury. The term “power tool” in all of the
warnings listed below refers to your mains-operated
(corded) power tool or battery-operated (cordless) power
tool.
1) Work area
a) Keep work area clean and well lit. Cluttered and
dark areas invite accidents.
b) 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.
c) Keep children and bystanders away while
operating a power tool. Distractions can cause you
to lose control.
2) Electrical safety
a) 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
b) 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.
c) Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase
the risk of electric shock.
d) 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.
e) 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.
3) Personal safety
a) 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.
b) Use safety equipment. Always wear eye
protection.Safety equipment such as dust mask,
non-skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce
personal injuries.
c) Avoid accidental starting. Ensure the switch is in
the off-position before plugging in.Carrying
power tools with your finger on the switch or
plugging in power tools that have the switch on
invites accidents.
d) 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.
e) Do not overreach. Keep proper footing and
balance at all times. This enables better control of
the power tool in unexpected situations.
f ) Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing and gloves
awayfrom moving parts. Loose clothes, jewellery
or long hair can be caught in moving parts.
g) If devices are provided for the connection of
dust extraction and collection facilities, ensure
these are connected and properly used. Use of
these devices can reduce dust-related hazards.
4) Power tool use and care
a) 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.
b) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must be
repaired.
c) Disconnect the plug from the power source
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
d) Store 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.
e) Maintain power tools. Check for misalignment or
binding of moving parts, breakage of parts and
any other condition that may affect the power
tools operation. If damaged, have the power tool
repaired before use. Many accidents are caused by
poorly maintained power tools.
f ) Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier to control.
g) Use the power tool, accessories and tool bits
etc., in accordance with these instructions and in
the manner intended for the particular type of
power tool, taking into account the working
conditions and the work to be performed. Use of
the power tool for operations different from intended
could result in a hazardous situation.
5) Service
a) Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power tool
is maintained.

Voltage
Power input
No load speed
Cutting length
Max. cutting capacity
Net weight
230V~50Hz
500W
1650min-1
410mm
17mm
2.8kg
1. Use non-slip, heavy-duty protective gloves when
operating the hedge trimmer and when installing or
removing blades.
2. Replace any blade that has been damaged. Always make
sure blade is installed correctly and securely fastened
before each use. Failure to do so can cause serious
injury.
3. Never cut any material over 17mm in diameter.
4. Maintain a firm grip on both handles while cutting with a
blade. Keep the blade away from body.
5. Know how to stop the unit quickly in an emergency.
6. Do not use trimmer without front handles in place. Keep
both hands on handles when the unit is in use.
7. If hedge trimmer is equipped with a clipping deflector, do
not use the clipping deflector as a gripping surface.
8. Disconnect Hedge Trimmer - Disconnect the plug from
power source before making any adjustments, changing
accessories, storing the hedge trimmer, or before
servicing.
9. Such preventive safety measures reduce the risk of
starting the product accidentally.
1. Safe guard
2. Front handle
3. Hand safety switch
4. Rear handle
5. Cord guard
6. Blade
7. Switch trigger
8. Cable strain relief
9. Opening
10. Extension cord（not included）
CONNECTING TO POWER SUPPLY (Fig. 1)
This product is designed with a cable strain relief (8) that
prevents the extension cord from being pulled loose while
using.
1. Form a loop with the end of the extension cord.
2. Insert loop portion of extension cord through opening (9)
in the bottom of the rear handle and place over cable
strain relief.
3. Slowly pull loop against cord retainer until the slack is
removed.
4. Plug product into extension cord.
NOTE:
Failure to remove all excess cord slack from extension
cord retainer could result in plug loosening from receptacle.
HOLDING THE TRIMMER
Before operating the trimmer, stand in the operating position,
and check the following.
1. Proper clothing as well as safety eye and ear protection
is worn.
• Safety guard: 1 pc
• Blade cover: 1 pc
4
INSTRUCTIONS FOR SAFE HANDLING
1. Make sure that the tool is only connected to the
voltage marked on the name plate.
2. Never use the tool if its cover or any bolts are missing.
If the cover or bolts have been removed, replace
them prior to use. Maintain all parts in good working
order.
3. Always secure tools when working in elevated
positions.
4. Never touch the blade, drill bit, grinding wheel or other
moving parts during use.
5. Never start a tool when its rotating component is in
contact with the workpiece.
6. Never lay a tool down before its moving parts have
come to a complete stop.
7. ACCESSORIES: The use of accessories or
attachments other than those recommended in these
instructions might present a hazard.
8. REPLACEMENT PARTS: When servicing use only
identical replacement parts.
SPECIFICATIONS
ACCESSORIES
OPERATION
SPECIFIC SAFETY RULES FOR HEDGE
TRIMMER
DESCRIPTION
10. Service on the product must be performed by qualified
repair personnel only. Service or maintenance performed
by unqualified personnel could result in injury to the user
or damage to the product.
11. If the power supply cord is damaged, it must be replaced
only by the manufacturer or by an authorized service
center to avoid risk.
12. Keep 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 material. A moment of inattention
while operating the hedge trimmer may result in serious
personal injury.
13. Carry the hedge trimmer by the handle with the 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.
14. Save these instructions. Refer to them frequently and use
them to instruct others who may use this tool. If you loan
someone this tool, loan them these instructions also to
prevent misuse of the product and possible injury.

STARTING AND STOPPING (Fig. 2)
1. To start the tool, squeeze the hand safety switch (3) and
switch trigger (7) simultaneously.
2. Release either switch to stop the tool.
CUTTING
DANGER!
Never cut near electric cords or lines. If blade jams on any
electrical cord or line, DO NOT TOUCH THE BLADE! IT CAN
BECOME ELECTRICALLY LIVE AND VERY DANGEROUS.
Continue to hold the hedge trimmer by the insulated rear
handle or lay it down and away from you in a safe manner.
Disconnect the electrical service to the damaged line or cord
before attempting to free the blade from the line or cord.
Contact with the blade, other conductive parts of the hedge
trimmer, or live electric cords or lines will result in death
by electrocution or serious injury.
WARNING!
Always keep both hands on the hedge trimmer handles.
Never hold shrubs with one hand and operate hedge trimmer
with the other. Improper handling of hedge trimmer could
result in serious injury.
WARNING!
Clear the area to be cut before each use. Remove all objects
such as cords, lights, wire, or loose string which can become
entangled in the cutting blade and create a risk of electric
shock and serious personal injury.
CUTTING SEQUENCE
When trimming new growth, use wide sweeping action so
that the stems are fed directly into the blade. Do not try to cut
branches that are thicker that 10mm or those obviously too
large to feed into the blade. Use looping shears, a hand saw
or pruning saw to cut out thick branches first. If a radical cut
is necessary, cut a little at a time in several passes. Cut both
sides of the hedge first and then the top.
CUTTING TECHNIQUES
Horizontal cut (Fig. 3)
Hold the trimmer with the blade tilted 5-10 degrees to your
cutting object makes the operation easier and assures a
better cutting.
Vertical cut (Fig. 4)
Start trimming at the bottom and sweep up for even cutting.
Swing the blades in an arc towards the outsides of the hedge
so that the cuttings are swept on the ground.
WARNING!
When servicing, use only identical replacement parts. Use of
any other parts can create a hazard or cause product
damage.
WARNING!
Before inspecting, cleaning, or servicing the machine,
disconnect the plug from power source and wait for all
moving parts to stop. Failure to follow these instructions
can result in serious personal injury or property damage.
WARNING!
Before inspecting, cleaning, or servicing the machine,
disconnect the plug from power source and wait for all
moving parts to stop. Failure to follow these instructions
can result in serious personal injury or property damage.
NOTE:
Do not oil while the hedge trimmer is running.
NOTE:
Do not use any strong detergents on the plastic housing or
the handle. They can be damaged by certain aromatic oils
such as pine and lemon, and by solvents such as kerosene.
LUBRICATING THE BLADE (Fig. 5)
For easier operation and longer blade life, lubricate the
hedge trimmer blade before and after each use.
1. Stop the motor and disconnect from power supply.
2. Lay the hedge trimmer on a flat surface. Apply light weight
machine oil along the edge of the top blade. If you will be
using the hedge trimmer for an extended period, it is
advisable to oil the blade during use.
SHARPENING THE BLADE
The blade must be re-sharpened if cutting performance and
behavior begin to deteriorate (i.e. if blades frequently snag on
branches).
1. Stop the motor and disconnect from power supply, and
clamp the blade in a vice.
2. File the exposed cutting surface of each blade tooth with
a smooth round file. Be sure to retain the original angle of
tooth when filing.
3. Remove the blade from the vise, and restart it and stop it
so that unshaped edges of the blade teeth are exposed.
4. Disconnect the trimmer from the power supply and repeat
the sharpening procedure if necessary.
CLEANING THE HEDGE TRIMMER
1. Stop the motor and disconnect from power supply.
2. Clean dirt and debris from the body of the hedge trimmer,
using a damp cloth with a mild detergent.
TRANSPORTING AND STORING
1. Always place the blade cover on the blade before storing
or transporting the hedge trimmer. Use caution to avoid
the sharp teeth of the blade.
2. Clean the hedge trimmer thoroughly before storing.
Store the hedge trimmer indoors, in a dry place that
is inaccessible to children. Keep away from corrosive
agents such as garden chemicals and de-icing salts.
5
MAINTENANCE
2. The unit is held firmly with both hands. The right arm is
slightly bent and is holding the rear handle (4), and the
left arm is straight and is holding the front handle (2).
3. Make sure you have a safe footing and hold the garden
trimmer so that the cutting blades always clear of your
body.

6
NOTE