YATO YT-09803, Manual, Page: 9 / 64

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O R I G I N A L I N S T R U C T I O N S
General safety rules
For multiple hazards, read and understand the safety instructions before in-
stalling, operating, repairing, maintaining, changing accessories on, or work-
ing near the assembly power tool for threaded fasteners. Failure to do so
can result in serious bodily injury. Only quali fi ed and trained operators should
install, adjust or use the assembly power tool for threaded fasteners. Do not
modify this assembly power tool for threaded fasteners. Modi fi cations can
reduce the e ff ectiveness of safety measures and increase the risks to the
operator. Do not discard the safety instructions; give them to the operator.
Do not use the assembly power tool for threaded fasteners if it has been
damaged. Tools shall be inspected periodically to verify that the ratings and
markings required by this part of ISO 11148 are legibly marked on the tool.
The employer/user shall contact the manufacturer to obtain replacement
marking labels when necessary.
Projectile hazards
Failure of the workpiece, of accessories or even of the inserted tool itself
can generate high-velocity projectiles. Always wear impact-resistant eye
protection during the operation of the assembly power tool for threaded
fasteners. The grade of protection required should be assessed for each
use. Ensure that the workpiece is securely fi xed.
Entanglement hazards
Entanglement hazards can result in choking, scalping and/or lacerations
if loose clothing, personal jewellery, neckware, hair or gloves are not kept
away from the tool and accessories. Gloves can become entangled with
the rotating drive, causing severed or broken fi ngers. Rotating drive sock-
ets and drive extensions can easily entangle rubber-coated or metal-rein-
forced gloves. Do not wear loose- fi tting gloves or gloves with cut or frayed
fi ngers. Never hold the drive, socket or drive extension. Keep hands away
from rotating drives.
Operating hazards
The use of the tool can expose the operator’s hands to hazards including
crushing, impacts, cuts and abrasions and heat. Wear suitable gloves to
protect hands. Operators and maintenance personnel shall be physically
able to handle the bulk, weight and power of the tool. Hold the tool correct-
ly; be ready to counteract normal or sudden movements and have both
hands available. Maintain a balanced body position and secure footing. In
cases where the means to absorb the reaction torque are requested, it is
recommended to use a suspension arm whenever possible. If that is not
possible, side handles are recommended for straightcase and pistol-grip
tools. Reaction bars are recommended for angle nutrunners. In any case,
it is recommended to use a means to absorb the reaction torque above
4 Nm for straight tools, above 10 Nm for pistol-grip tools, and above 60
Nm for angle nutrunners. Release the start-and-stop device in the case
of an interruption of the energy supply. Use only lubricants recommend-
ed by the manufacturer. Fingers can be crushed in open-ended crow-foot
nutrunners. Do not use in con fi ned spaces and beware of crushing hands
between tool and workpiece, especially when unscrewing.
Repetitive motions hazards
When using a power tool for, the operator can experience discomfort in the
hands, arms, shoulders, neck, or other parts of the body. While using an
assembly power tool for threaded fasteners, the operator should adopt a
comfortable posture whilst maintaining secure footing and avoiding awk-
ward or o ff -balanced postures. The operator should change posture during
extended tasks, which can help avoid discomfort and fatigue. If the op-
erator experiences symptoms such as persistent or recurring discomfort,
pain, throbbing, aching, tingling, numbness, burning sensations or sti ff -
ness, these warning signs should not be ignored. The operator should tell
the employer and consult a quali fi ed health professional.
Accessory hazards
Disconnect the assembly power tool for threaded fasteners from the en-
ergy supply before changing the inserted tool or accessory. Do not touch
sockets or accessories during impacting, as this increases the risk of
cuts, burns or vibration injuries. Use only sizes and types of accessories
and consumables that are recommended by the assembly power tool for
threaded fasteners manufacturer. Use only impact-wrench-rated sockets
in good condition, as poor condition or hand sockets and accessories used
with impact wrenches can shatter and become a projectile.
Workplace hazards
Slips, trips and falls are major causes of workplace injury. Be aware of
slippery surfaces caused by the
use of the tool and also of trip hazards caused by the air line or hydraulic
hose. Proceed with care in unfamiliar surroundings. Hidden hazards, such
as electricity or other utility lines, can exist. The assembly power tool for
threaded fasteners is not intended for use in potentially explosive atmos-
pheres and is not insulated against coming into contact with electric power.
Make sure there are no electrical cables, gas pipes, etc., that can cause a
hazard if damaged by use of the tool.
Dust and fume hazards
Dust and fumes generated when using assembly power tools for threaded
fasteners can cause ill health (for example, cancer, birth defects, asthma
and/or dermatitis); risk assessment and implementation of appropriate con-
trols for these hazards are essential. Risk assessment should include dust
created by the use of the tool and the potential for disturbing existing dust.
Direct the exhaust so as to minimize disturbance of dust in a dust- fi lled en-
vironment. Where dust or fumes are created, the priority shall be to control
them at the point of emission. All integral features or accessories for the
collection, extraction or suppression of airborne dust or fumes should be cor-
rectly used and maintained in accordance with the manufacturer’s instruc-
tions. Use respiratory protection in accordance with employer’s instructions
and as required by occupational health and safety regulations.
Noise hazards
Unprotected exposure to high noise levels can cause permanent, disabling,
hearing loss and other problems, such as tinnitus (ringing, buzzing, whistling
or humming in the ears). Risk assessment and implementation of appropri-
ate controls for these hazards are essential. Appropriate controls to reduce
the risk may include actions such as damping materials to prevent work-
pieces from “ringing”. Use hearing protection in accordance with employer’s
instructions and as required by occupational health and safety regulations.
Operate and maintain the assembly power tool for threaded fasteners as
recommended in the instruction handbook, to prevent an unnecessary in-
crease in noise levels. If the assembly power tool for threaded fasteners has
a silencer, always ensure it is in place and in good working order when the