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The purpose of safety symbols is to attract your 
attention to possible dangers. The safety symbols, 
and their explanations, deserve your careful attention 
and understanding. The safety warnings do not by
themselves eliminate any danger. The instructions or
warnings they give are not substitutes for proper 
accident prevention measures.

SYMBOL

MEANING

SAFETY ALERT SYMBOL:

Indicates danger, warning, or caution.
Attention is required in order to avoid serious
personal injury. May be used in conjunction
with other symbols or pictographs. 

NOTE:

Advises you of information or instructions vital to
the operation or maintenance of the equipment.

DANGER

:

Failure to obey a safety warning will result in
serious injury to yourself or to others. Always
follow the safety precautions to reduce the
risk of fire, electric shock, and personal injury.

WARNING

:

Failure to obey a safety warning can result in
injury to yourself and others. Always follow
the safety precautions to reduce the risk of
fire, electric shock, and personal injury. 

CAUTION:

Failure to obey a safety warning may result 
in property damage or personal injury to
yourself or to others. Always follow the 
safety precautions to reduce the risk of fire,
electric shock, and personal injury.

RULES FOR SAFE OPERATION

3

• IMPORTANT SAFETY INSTRUCTIONS •

WARNING: 

When using this electric Hedge Trimmer,
basic safety precautions should always be
followed to reduce the risk of fire, electric
shock, and personal injury. Carefully read
and understand the entire Operator's
Manual before using your Hedge Trimmer.
Pay close attention to the Operating
Instructions and Safety Warnings.

READ ALL INSTRUCTIONS

WARNING

:

To reduce the risk of fire, electric shock, or injury:

• Do not leave the Hedge Trimmer plugged in. Unplug

from outlet when not in use, changing attachments,
blades, or before servicing.

• Avoid dangerous environments. Never operate your

unit in damp or wet conditions. Moisture is a shock
hazard.

• Do not use the unit in the rain.

• Do not handle the unit with wet hands.

• Use the right tool. Use this unit only as described in

this manual. Do not use for any job except that for
which it is intended. Use only the manufacturer’s
recommended attachments.

Clear the area to be cut before each use. Remove
all objects such as cords, lights, wire, or string
which can become entangled in the cutting blade.

• Do not abuse the power cord. Do not pull or carry the

unit by the cord, use cord as a handle, close a door on
cord, or pull the cord around sharp edges or corners.
Keep the cord away from heated surfaces, oil and
sharp edges.

• Turn off all controls before unplugging.

• Do not unplug by pulling on the cord. To unplug, grasp

the plug, not the cord.

• Keep hair, loose clothing, fingers, and all parts of body

away from openings and moving parts.

• Do not allow to be used as a toy. Close attention is

necessary when used by or near children.

• Inspect all extension cords and the unit power 

connection periodically. Look closely for deterioration,
cuts or cracks in the insulation. Also inspect the
connections for damage. Replace the cords if any
defects or damage appear.

• Risk of cut. Keep hands away from blades. Keep both

hands on handles when power is on. 

• Do not attempt to remove cut material or hold material

to be cut when blades are moving. Make sure unit is
unplugged and the switch is off when clearing jammed
material from blades. Do not grasp the exposed
cutting blades or cutting edges when picking up or
holding the unit. CAUTION - blades coast after unit is
turned off.

• To reduce the risk of electrical shock, use only with 

an extension cord intended for outdoor use, such as
SW-A, SOW-A, STW-A, STOW-A, SJW-A, SJOW-A,
SJTW-A or SJTOW-A.

Summary of Contents for HT816r, HT818r, HT822r

Page 1: ...HT816r HT818r HT822r Electric Hedge Trimmer OPERATOR S MANUAL FOR QUESTIONS CALL 1 800 345 8746 in U S or 1 800 265 6778 in CANADA www ryobi com IMPORTANT MANUAL DO NOT THROW AWAY...

Page 2: ...with easy to understand operating instructions Read the whole manual and follow all the instructions to keep your new outdoor power tool in top operating condition PRODUCT REFERENCES ILLUSTRATIONS AN...

Page 3: ...Trimmer plugged in Unplug from outlet when not in use changing attachments blades or before servicing Avoid dangerous environments Never operate your unit in damp or wet conditions Moisture is a shoc...

Page 4: ...age FOR SAFE OPERATION Avoid unintentional starting Do not carry plugged in unit with your finger on the switch Be sure switch is off when plugging in Always remain alert Use common sense To prevent i...

Page 5: ...specially children and pets at least 50 feet 15 m from the operating area KEEP HANDS AWAY FROM BLADES WARNING Moving blades can cause severe injury Do not touch the blades when starting or while opera...

Page 6: ...shes with a branch diameter of up to 3 8 inch Fig 2 KNOW YOUR UNIT Screw Screw Lock Nut Handle Slot Blade Guard Front Handle Rear Handle Ears Rear Handle Lock Nut Front Handle Blade Guard Cutting Blad...

Page 7: ...Depress and hold the switch trigger 3 Release the lock off button 4 Pull lock on tab back with your thumb and hold 5 Release switch trigger then release lock on tab To Release the Lock On 1 Depress th...

Page 8: ...reduce your pace TO TRIM A HEDGE WARNING Clear the area to be cut before each use Remove all objects such as cords lights wire or string which can become entangled in the cutting blade 1 Use hedge tr...

Page 9: ...act with plastic parts They contain chemicals that can damage weaken or destroy plastic Wipe off the unit with a clean dry soft cloth Keep handles dry clean and free from oil and grease at all times S...

Page 10: ...ve blade cover screw Fig 10 2 Remove blade cover To remove push blade cover forward and lift from hedge trimmer 3 Remove blade screws Fig 11 NOTE A flat blade or T20 Torx bit screwdriver is required t...

Page 11: ...slots in housing then slide blade cover back into its correct position Fig 15 11 Tighten blade cover screw securely WARNING Make sure blade cover is replaced before connecting your hedge trimmer to po...

Page 12: ...a double insulated unit must be identical to the parts they replace Refer any repair to an authorized service dealer A double insulated unit is marked with the words DOUBLE INSULATION or DOUBLE INSUL...

Page 13: ...el HT816r 1 180183 REPLACEMENT BLADE Model HT818r 1 180184 REPLACEMENT BLADE Model HT822r 2 180185 BLADE PLATE 3 180398 BLADE SCREW 4 180049 FRONT WRAP AROUND HANDLE 5 180048 FRONT HANDLE SCREW 6 1800...

Page 14: ...found in the reasonable judgement of RYOBI to be defective in material or workmanship will be repaired or replaced by an authorized RYOBI service dealer without charge for parts and labor The RYOBI P...

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