Bedienungsanleitung Makita EA5001P (Seite 11 von 80) (Englisch, Französisch)

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To avoid kickback

The best protection from personal-injury that may

result from kickback is to avoid kickback situations:

1. Hold the chain saw rmly with both hands and

maintain a secure grip.

2. Be aware of the location of the guide bar nose at all

times.

3. Never bring the nose of the guide bar in contact with

any object.

Do not cut limbs with the nose of the guide bar. Be

especially careful with small, tough limbs, small

size brush and saplings which may easily catch the

chain.

4. Don’t overreach.

5. Don’t cut above shoulder height.

6. Begin cutting and continue at full throttle.

7. Cut only one log at a time.

8. Use extreme caution when re-entering a previous

cut.

9. Do not attempt plunge cuts (see page 16) if you are

not experienced with these cutting techniques.

10. Be alert for shifting of the log or other forces that may

cause the cut to close and pinch the chain.

11. Maintain saw chain properly. Cut with a correctly

sharpened, properly tensioned chain at all times.

12. Stand to the side of the cutting path of the chain

saw.

Many factors inuence the occurence and force of

the kickback reaction. The type of bar and saw chain you

use is a factor in the force of the kickback reaction.

The speed of contact at which the cutter contacts

the object.

Kickback force increase with the rate of impact.

The contact angle between the nose of the bar

and the foreign object (g. 11).

Kickback is most pronounced in the upper quadrant

of the bar nose.

MAKITA chain types are designed to reduce kickback

forces.

The depth gauges:

Improper lowering of the depth gauges also increases

the risk of a kickback.

Saw chain cutter sharpness:

WARNING!

A dull improperly sharpened chain may increase the

risk of kickback. Always cut with a properly sharpened

chain.

Devices for reducing the risk of kickback injury

MAKITA have developed a special chain brake to reduce

the risk of kickbacks.

This chain brake increases the safety factor on the

job, e.g. when the saw suddenly bucks upwards the chain

stops rotating within a fraction of a second.

A deection guard on the disengaging lever of the chain

brake and a scoop rear handle ensure that the operator’s

hands are fully protected at all times.

Kickback tendency increases as the radius or size of

the guide bar nose increases. MAKITA have developed

guide bars with small nose radius, to reduce the kickback

tendency.

WARNING!

No chain brake prevents kickback.

These brakes are designed only to stop the chain,

if activated.

To ensure a proper operation of the chain brake, it

must be properly maintained.

Furthermore, there must be a sufcient distance

between the operator and the bar to ensure that the

chain brake has sufcient time to activate and stop

the chain before potential contact with the operator.

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