Causes And Operator Prevention Of Kickback - GreenWorks Commercial 48TH12 Manual Del Operador

EN
• Wear safety glasses and hearing protection. Further
protective product for head, hands, legs and feet is
recommended. Adequate protective clothing will reduce
personal injury from flying debris or accidental contact
with the saw chain.
• Do not operate a chainsaw in a tree. Operation of a
chainsaw while up in a tree may result in personal injury.
• Always keep proper footing and operate the chainsaw
only when standing on fixed, secure and level surface.
Slippery or unstable surfaces such as ladders may cause
loss of balance or control of the chainsaw.
• When cutting a limb that is under tension, be alert of
spring back. When the tension in the wood fibres is
released, the spring loaded limb may strike the operator
and/or throw the chainsaw out of control.
• Use extreme caution when cutting brush and saplings.
The slender material may catch the saw chain and be
whipped toward you or pull you off balance.
• Carry the chainsaw by the front handle with the
chainsaw switched off and away from your body.
When transporting or storing the chainsaw, always fit
the guide bar cover. Proper handling of the chainsaw
will reduce the likelihood of accidental contact with the
moving saw chain.
• Follow instructions for lubricating, chain tensioning
and changing accessories. Improperly tensioned or
lubricated chain may either break or increase the chance
for kickback.
• Keep handles dry, clean, and free from oil and grease.
Greasy, oily handles are slippery, causing loss of control.
• Cut wood only. Do not use chainsaw for purposes not
intended. For example: do not use chainsaw for
cutting plastic, masonry or non-wood building
materials. Use of the chainsaw for operations other than
intended could result in a hazardous situation.
• Fatigue causes carelessness. Be more cautious before
rest periods and towards the end of your shift.
• Personal protective clothing required by your safety
organizations, government regulations, or your
employer should be used. At all times when using a
chain saw, snug-fitting clothing, protective eyewear,
safety footwear, and hand, leg, and hearing protection
should be worn.
• Before fuelling, servicing, or transporting your chain
saw, switch off the chain saw.
• When felling, keep at least two tree lengths away from
other persons or animals.
• Plan your work, ensuring an obstacle-free work area
and, in the case of felling, have at least one escape
path from the falling tree prepared in advance.
• Follow the instructions in your operator's manual for
starting the chain saw and control the chain saw with
a firm grip on both handles when it is in operation.
Always hold the chain saw with your right hand on the
rear handle and your left hand on the front handle. Keep
handles dry, clean, and free of oil.
English
• When transporting your chain saw, use the
appropriate transportation covers, which should be
available for the guide bar and saw chain.
• Never operate a chain saw that is damaged or
improperly adjusted or that is not completely and
securely assembled. Be sure that the saw chain stops
moving when the power control system trigger is
released. Never adjust the guide bar or saw chain when
the chain saw is operating.
• Do not attempt a pruning or limbing operation in a
standing tree unless specifically trained to do so.
• Guard against kickback. Kickback is the upward
motion of the guide bar that occurs when the saw
chain, at the nose of the guide bar, contacts an object.
Kickback can lead to dangerous loss of control of the
chain saw.
• A chain saw is intended for two-handed use. Serious
injury to the operator, helpers, and/or bystanders can
result from one-handed operation.
3.2 CAUSES AND OPERATOR
PREVENTION OF KICKBACK:
Kickback may occur when the nose or tip of the guide bar
touches an object, or when the wood closes in and pinches the
saw chain in the cut.
Tip contact in some cases may cause a sudden reverse
reaction, kicking the guide bar up and back towards the
operator.
Pinching the saw chain along the top of the guide bar may
push the guide bar rapidly back towards the operator.
Either of these reactions may cause you to lose control of the
saw which could result in serious personal injury. Do not rely
exclusively upon the safety devices built into your saw. As a
chainsaw user, you should take several steps to keep your
cutting jobs free from accident or injury.
Kickback is the result of tool misuse and/or incorrect
operating procedures or conditions and can be avoided by
taking proper precautions as given below:
• Maintain a firm grip, with thumbs and fingers
encircling the chainsaw handles, with both hands on
the saw and your body and arm positioned to allow
you to resist kickback forces.
Kickback forces can be controlled by the operator, if
proper precautions are taken. Do not let go of the
chainsaw.
• Do not overreach and do not cut above shoulder
height. This helps prevent unintended tip contact and
enables better control of the chainsaw in unexpected
situations.
• Only use replacement bars and chains specified by the
manufacturer. Incorrect replacement bars and chains
may cause chain breakage and/or kickback.
• Follow the manufacturer's sharpening and
maintenance instructions for the saw chain.
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