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OPERATING INSTRUCTIONS

8

USING THE HEDGE TRIMMER

WARNING: 

If any parts are missing, damaged,

or broken do not operate your trimmer until they
have been replaced. Failure to do so could result
in possible serious personal injury.

WARNING:

To prevent serious personal

injury, always use both the front handle and
rear handle to hold the hedge trimmer during
operation.

Use the hedge trimmer for trimming and the forming of
hedges, shrubs, and bushes with a branch diameter of
up to 3/8 inch.

WARNING:

To prevent serious personal

injury, keep hands away from blades. 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.

WARNING:

Never use guard as a handle.

Never grasp the unit by the guard. Failure to
heed this warning can result in serious
personal injury.

For your protection there is a blade guard between the
front handle and the blade.

1. Cord secured to unit and plugged in.

2. With the blade directed away, hold the unit by the

front and rear handle (Fig. 6).

3. Start the unit with the blades away from the hedge to

be trimmed.

General Tips:

Keep from trimming too much at one time. This can
cause the blades to bind and slow, reducing the
cutting efficiency.

Do not force the unit through dense growth. If the
blades slow down, 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 trimmer properly. Before starting hedge

trimmer, hold the unit with both hands and face the
cutting blade away from you (Fig. 6).

2. Always keep the cord behind the hedge trimmer

when in use. Do not place it over the hedge where it
may be cut by the blade.

DANGER: 

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 your
trimmer by the insulated handles and
immediately disconnect the damaged 
electrical cord or line from the power source.
Failure to heed this Danger will result in
serious personal injury and possibly death.

2. If desired, you can use a string to help cut your

hedge level. Decide how high you want the hedge.
Then, stretch a piece of string along the hedge at
this height. Trim the hedge just above this guide line
of string. Trim the side of a hedge so that it will be
slightly narrower at the top (Fig. 7). More of the
hedge will be exposed when shaped this way, and it
will be more uniform.

3. Wear gloves when trimming thorny or prickly growth.

When trimming new growth, use a wide sweeping
action, so that the stems are fed directly into the
cutting blade. Older growth will have thicker stems
and will be trimmed easiest by using a sawing
movement. 

Do not try to cut stems that are larger than 3/8 inch
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.

Fig. 7

Fig. 6

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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