Manual de uso McCulloch MCC1840B Sierra de cadena

Manual de uso

4 5

2 - SAFETY PRECAUTIONS

2-1. KICKBACK SAFETY PRECAUTIONS

WARNING

Kickback may occur when the nose or tip of the guide bar

touches an object, or when the wood closes in and pinch-

es the saw chain in the cut. If bar tip makes contact with

something it may cause a lightning-fast 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 chain saw user, you should take several steps to keep

your cutting jobs free from accident or injury.

1. With a basic understanding of kickback, you can

reduce or eliminate the element of surprise. Sudden

surprise contributes to accidents.

2. Keep a good firm grip on the saw with both hands, the

right hand on the rear handle, and the left hand on the

front handle, when the engine is running. Use a firm

grip with thumbs and fingers encircling the chain saw

handles. A firm grip will help you reduce kickback and

maintain control of the saw. Don’t let go.

3. Make sure that the area in which you are cutting is

free from obstructions. Do not let the nose of the guide

bar contact a log, branch, or any other obstruction

which could be hit while you are operating the saw.

4. Cut at high engine speeds.

5. Do not overreach or cut above shoulder height.

6. Follow manufacturer’s sharpening and maintenance

instructions for the saw chain.

7. Only use replacement bars and chains specified by

the manufacturer or the equivalent.

NO

TE:

Lo

w-kic

kbac

k sa

w chain is chain that has met the

kickback performance requirements of ANSI B175.1-2000

(Amer

ican National Standard for Power Tools Gasoline-

P

o

w

ered Chain Sa

ws Saf

ety Requirements) when tested

on the representative sample of chain saws below 3.8 c.i.d.

specified in ANSI B175.1-2000.

2-2. OTHER SAFETY PRECAUTIONS

1. DO NOT operate a chain saw with one hand! Serious

injury to the operator, helpers, bystanders, or any

combination of these persons may result from one-

handed operation. A chain saw is intended for two-

handed use.

2.

DO NO

T oper

ate a chain sa

w when y

ou are f

atigued.

3. Use safety footwear, snug-fitting clothing, protective

gloves, and eye, hearing and head protection devices.

4. Use caution when handling fuel. Move the chain saw

at least 9.1m (30 feet) from the fueling point before

starting the engine.

5. DO NOT allow other persons to be near when starting

or cutting with the chain saw. Keep bystanders and

animals out of the work area.

6. DO NOT start cutting until you have a clear work area,

secure footing, and a planned retreat path from the

falling tree.

7. Keep all parts of your body away from the saw chain

when the engine is running.

8. Before you start the engine, make sure that the saw

chain is not contacting anything.

9. Carry the chain saw with the engine stopped, the

guide bar and saw chain to the rear, and the muffler

away from your body.

10. DO NOT operate a chain saw that is damaged,

improperly adjusted, or not completely and securely

assembled. Be sure that the saw chain stops moving

when the throttle control trigger is released.

11. Shut off the engine before setting the chain saw down.

12. Use extreme caution when cutting small size brush

and saplings because slender material may catch the

saw chain and be whipped toward you or pull you off

balance.

13. When cutting a limb that is under tension, be alert for

springback so that you will not be struck when the ten-

sion in the wood fibers is released.

14. Keep the handles dry, clean, and free of oil or fuel mix-

ture

.

15. Operate the chain saw only in well-ventilated areas.

16. DO NOT operate a chain saw in a tree unless you

ha

ve been specifically trained to do so.

17. All chain saw service, other than the items listed in the

user manual safety and maintenance instructions,

should be performed by competent chain saw service

personnel.

18. When transporting your chain saw, use the appropri-

ate guide bar scabbard.

19. DO NOT operate your chain saw near or around flam-

mab

le liquids or gases whether in or out of doors. An

explosion and/or fire may result.

20.

USE THE RIGHT TOOL: Cut wood only. Do not use

the chain sa

w f

or pur

poses f

or which it w

as not intend-

ed.

F

or e

xample

, do not use the chain sa

w f

or cutting

plastic

, masonry, or non-building materials.

21. Do not attempt to add fuel or lubricating oil to saw

while engine is r

unning.

SAFETY PRECAUTIONS FOR CHAIN SAW USERS

(ANSI B175.1-2000, Annex C. CAN/CSA-Z62.1-03)

NOTE: These safety precautions are intended primarily for

the consumer or occasional user. When using a chain saw

for logging purposes, refer to the Code of Federal

Regulations, Section 1910.226(5); 2.5.1., of American

National Standard Safety Requirements for Pulpwood

Logging, ANSI 03.1-1978; and relevant state safety codes.

These models are classified according to CAN/ CSA-

Z62.1-03 as a Class 1C saw. They are intended for infre-

quent use by homeowners, cottagers, and campers, and for

such general applications as clearing, pruning, cutting fire-

wood, etc. They are not intended for prolonged use. If the

intended use involves prolonged periods of operation, this

may cause circulatory problems in the user’s hands due to

vibration. All models covered in this manual employ an anti-

vibration feature for increased comfort and safety.

2-3. GENERAL SAFETY PRECAUTIONS

FOR CHAIN SAW USERS

1. Fatigue causes carelessness. Be more cautious

before rest periods and towards the end of your shift.

2. 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 eye wear,

safety footwear, and hand, leg, and hearing protection

should be worn.

3. Before refueling, servicing, or transporting your chain

saw, switch off the engine. To help prevent fire, restart

your chain saw at least 9.1m (30ft) from the fuelling

area.

4. When a chain saw is being used, a fire extinguisher

should be available.

5. When felling, keep at least 2 tree lengths away from

your fellow workers.

6. Plan your work, ensuring an obstacle-free work area

and, in the case of felling, at least one escape path

from the falling tree.

7.

F

ollo

w the instructions in your operator’s manual for

starting the chain saw and control the chain saw with

a fir

m g

rip on both handles when it is in operation.

Keep handles dry, clean, and free of oil.

8. When transporting your chain saw, use the appropri-

ate tr

anspor

tation co

v

ers

, which should be available

for the guide bar and saw chain.

9. Never operate a chain saw that is damaged or improp-

erly adjusted or that is not completely and securely

assemb

led.

Be sure that the saw chain stops moving

when the power control system trigger is released.

Ne

ver adjust the guide bar or saw chain when the

engine is operating.

10.

Beware of carbon monoxide poisoning. Operate the

chain sa

w in w

ell-v

entilated areas only

.

11. Do not attempt a pruning or limbing operation in a

standing tree unless specifically trained to do so.

12. Guard against kickback. Kickback is the upward

motion of the guide bar that occurs when the sa

w

chain, at the nose of the guide bar, contacts an object.

Kickback can lead to dangerous loss of control of the

chain saw.

13. A chain saw is intended for two-handed use. Serious

injury to the operator, helpers, and/or bystanders can

result from one-handed oper

ation.

14. See section 2-5, 2-6 for symbol definitions, page 5.

15. When carrying a chain saw with the engine running,

engage the chain brake.

16. Allow your chain saw to cool before refueling, and do

not smoke.

17. Keep other persons or animals a safe distance away

from a running chain saw or the area where a tree is

being felled.

18. Use extreme caution when cutting small brush and

saplings because slender material can catch the saw

chain and be whipped toward you.

19. When cutting a limb that is under tension or compres-

sion, be alert for springback.

20. This gas-powered saw is classified according to CAN/

CSA-Z62.1-03 as a Class 1C saw. It is intended for

infrequent use by homeowners, cottagers, and

campers, and for such general applications as clear-

ing, pruning, cutting firewood, etc. It is not intended for

prolonged use.

Prolonged periods of operation can cause circulatory

problems in the user’s hands due to vibration. For

such use, it may be appropriate to use a saw having

an anti-vibration feature.

2-4. MORE ABOUT KICKBACK

WARNING

DANGER! BEWARE OF KICKBACK!

Kickback can lead to dangerous loss of control of the chain

saw and result in serious or fatal injury to the saw operator

or to anyone standing close by. Always be alert. Rotational

kickback and pinch-kickback are major chain saw opera-

tional dangers and the leading cause of most accidents.

BEWARE OF:

ROTATIONAL KICKBACK (Figure 2-4A)

A = Kickback path

B = Kic

kback reaction zone

2 - SAFETY PRECAUTIONS

2-4A

B

A

A

A

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