General Safety Precautions; The Operator - Makita DCS431 Owner's And Safety Manual

General Safety Precautions

The use of any chain saw may be hazardous. At full
throttle chain speed can reach 45 mph (20 m/s). It is
important that you read; fully understand and observe
the following safety precautions and warnings. Read
the owner's manual and the safety instructions
periodically.
WARNING !
Reactive forces, including kickback, can be dan-
gerous. Careless or improper use of any chain saw
may cause serious or fatal injury.
Have your MAKITA dealer show you how to operate
your chain saw. Observe all applicable local safety
regulations, standards and ordinances.
WARNING!
Minors should never be allowed to use a chain
saw.
Bystanders, especially children and animals should
not be allowed in the area where a chain saw is in
use (fig. 1).
Never let the saw run unattended.
Store it in a locked place away from children. Fill
the fuel tank to 7/8 th full (see storing the saw).
Do not lend your chain saw without this owner's
manual. Be sure that anyone using your saw un-
derstands the information given.
Proper use of a chain saw involves

1. the operator

2. the saw
3. the use of the saw.
Discription of symbols used on chain
saws:
Z 62.1-95 and
Z 62.3-96
Class 1A
ANSI B175.1-1991
Chain Saw listed in accordance with
American National Standard Safety
45M6
Specifications for Gasoline Powered
Chain Saws (ANSI B 175.1-1991).
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1
Compliance with
CSA -Standards
Compliance with
ANSI -Standards
MaximumComputed Kickback Angle
(CKA)* with using the chain brake when
using the recommended bar and chain
combinations
Always use two hands when
operating the chain saw!
Reduced Kickback Bar and
Chain combination that has been
evaluated with the power head
XXX.YYY.ZZZ
to achieve kickback protection
XXX.YYY.ZZZ (according to ANSI and CSA
standards).
* The Computed Kickback Angle is a calculated value
from energies measured on a test bench.It is not the
angle of the guide bar moved upward in case of a
KICKBACK.
The operator
Physical Condition
You must be in good physical condition and mental
health and not under the influence of any substance
(drugs, alcohol), which might impair vision, dexterity
or judgment.
WARNING !
Prolonged use of chain saws exposing the operator
to vibrations may produce Whitefinger disease
(Raynaud's phenomenon). This phenomenon
reduces the hand's ability to feel and regulate
temperature, produces numbness and burning
sensations and may cause nerve and circulation
damage and tissue necrosis.
All MAKITA saws are therefore provided with an
antivibration system which is essential for those
using chain saws on a regular or sustained basis.
Antivibration systems do not guarantee that you will
not sustain Whitefinger disesase, however, they
reduce this danger considerably. Nevertheless,
continual and regular users should observe their
hands and fingers and in case of any abnormal
symptoms, seek medical advice immediately.
(In this example the CKA is 40°).
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