Makita 4131 Manuel d'instruction - Page 5

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does not touch the blade or any other part, in

all angles and depths of cut.

To check lower guard, open lower guard by

hand, then release and watch guard closure.

Also check to see that Retracting Lever does

not touch tool housing. Leaving blade

exposed is VERY DANGEROUS and can

lead to serious personal injury.

3. Check the operation and condition of the

lower guard spring. If the guard and the

spring are not operating properly, they

must be serviced before use. Lower guard

may operate sluggishly due to damaged

parts, gummy deposits, or a buildup of debris.

4. Always observe that the lower guard is

covering the blade before placing tool

down on bench or floor. An unprotected,

coasting blade will cause the tool to walk

backwards, cutting whatever is in its path. Be

aware of the time it takes for the blade to stop

after switch is released.

5. NEVER hold piece being cut in your hands

or across your leg. It is important to support

the work properly to minimize body exposure,

blade binding, or loss of control.

6. Hold tool by insulated gripping surfaces

when performing an operation where the

cutting tool may contact hidden wiring or

its own cord. Contact with a "live" wire will

also make exposed metal parts of the tool

"live" and shock the operator.

7. When ripping always use a rip fence or

straight edge guide. This improves the

accuracy of cut and reduces the chance for

blade binding.

8. Always use blades with correct size and

shape (diamond vs. round) arbor holes.

Blades that do not match the mounting hard-

ware of the tool will run eccentrically, causing

loss of control.

9. Never use damaged or incorrect blade

washers or bolts. The blade washers and

bolt were specially designed for your tool, for

optimum performance and safety of opera-

tion.

10. Causes and Operator Prevention of Kick-

back:

Kickback is a sudden reaction to a pinched,

bound or misaligned saw blade, causing an

uncontrolled tool to lift up and out of the work-

piece toward the operator.

When the blade is pinched or bound tightly by

the kerf closing down, the blade stalls and the

motor reaction drives the unit rapidly back

toward the operator.

If the blade becomes twisted or misaligned in

the cut, the teeth at the back edge of the

blade can dig into the top surface of the work-

piece causing the blade to climb out of the

kerf and jump back toward operator.

Kickback is the result of tool misuse and/or

incorrect operating procedures or conditions

and can be avoided by taking proper precau-

tions as given below:

Maintain a firm grip with both hands on

the tool and position your body and arm

to allow you to resist KICKBACK forces.

KICKBACK forces can be controlled by the

operator, if proper precautions are taken.

When blade is binding, or when interrupt-

ing a cut for any reason, release the trig-

ger and hold the tool motionless in the

material until the blade comes to a com-

plete stop. Never attempt to remove the

tool from the work or pull the tool back-

ward while the blade is in motion or KICK-

BACK may occur. Investigate and take

corrective actions to eliminate the cause of

blade binding.

When restarting a tool in the workpiece,

center the saw blade in the kerf and check

that saw teeth are not engaged into the

material. If saw blade is binding, it may walk

up or KICKBACK from the workpiece as the

tool is restarted.

Support large panels to minimize the risk

of blade pinching and KICKBACK. Large

panels tend to sag under their own weight.

Supports must be placed under the panel on

both sides, near the line of cut and near the