![background image](http://html1.mh-extra.com/html/ryobi/p421/p421_operators-manual_1504860002.webp)
2 — English
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 warn-
ings listed below refers to your mains-operated (corded)
power tool or battery-operated (cordless) power tool.
SAVE THESE INSTRUCTIONS
WORK AREA SAFETY
Keep work area clean and well lit.
Cluttered or dark
areas invite accidents.
Do not operate power tools in explosive atmo-
spheres, 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 adapt-
er 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 elec-
tric 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.
Use battery only with charger listed. For use with
18 V nickel-cadmium and 18 V lithium-ion battery
packs,
see tool/appliance/battery pack/charger correla-
tion supplement 987000-432.
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 safety equipment. Always wear eye protection.
Safety equipment such as dust mask, non-skid safety
shoes, hard hat, or hearing protection used for appropri-
ate conditions will reduce personal injuries.
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.
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 tool
in unexpected situations.
Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves away
from moving parts.
Loose clothes, jewelry, 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 these devices can
reduce dust-related hazards.
Do not wear loose clothing or jewelry. Contain long
hair.
Loose clothes, jewelry, or long hair can be drawn
into air vents.
Do not use on a ladder or unstable support.
Stable
footing on a solid surface enables better control of the
power tool in unexpected situations.
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 the 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 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 bind-
ing 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 main-
tained cutting tools with sharp cutting edges are less
likely to bind and are easier to control.
GENERAL SAFETY RULES