Hilti 3490197 Use and Care Manual download pdf (Page 10)

5.1.6 Service

a) Have your power tool serviced by a qualified

repair person using only identical replacement

parts. This will ensure that the safety of the power

tool is maintained.

5.2 Safety instructions for all saws

5.2.1 Cutting procedures

DANGER

Keep hands away from cutting area and the

blade. Keep your second hand on auxiliary han-

dle, or motor housing. If both hands are holding

the saw, they cannot be cut by the blade.

b) Do not reach underneath the workpiece. The

guard cannot protect you from the blade below

the workpiece.

c) Adjust the cutting depth to the thickness of the

workpiece. Less than a full tooth of the blade

teeth should be visible below the workpiece.

d) Never hold piece being cut in your hands or

across your leg. Secure the workpiece to a

stable platform. It is important to support the

work properly to minimize body exposure, blade

binding, or loss of control.

e) Hold power tool by insulated gripping surfaces,

when performing an operation where the cutting

tool may contact hidden wiring. Contact with a

“live” wire will also make exposed metal parts of

the power tool “live” and shock the operator.

f) When ripping always use a rip fence or straight

edge guide. This improves the accuracy of cut

and reduces the chance of blade binding.

g) Always use blades with correct size and shape

(diamond versus round) of arbour holes. Blades

that do not match the mounting hardware of the

saw will run eccentrically, causing loss of control.

h) Never use damaged or incorrect blade washers

or bolt. The blade washers and bolt were specially

designed for your saw, for optimum performance

and safety of operation.

5.2.2 Further safety instructions for all saws

Causes and Operator Prevention of Kickback:

kickback is a sudden reaction to a pinched, bound or

misaligned saw blade, causing an uncontrolled saw to

lift up and out of the workpiece 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 wood causing the blade to climb

out of the kerf and jump back toward the operator.

Kickback is the result of saw misuse and/or incor-

rect operating procedures or conditions and can be

avoided by taking proper precautions as given below.

a) Maintain a firm grip with both hands on the saw

and position your arms to resist kickback forces.

Position your body to either side of the blade,

but not in line with the blade. Kickback could

cause the saw to jump backwards, but kickback

forces can be controlled by the operator, if proper

precautions are taken.

b) When blade is binding, or when interrupting

a cut for any reason, release the trigger and

hold the saw motionless in the material until

the blade comes to a complete stop. Never

attempt to remove the saw from the work or

pull the saw backward while the blade is in

motion or kickback may occur. Investigate and

take corrective actions to eliminate the cause of

blade binding.

c) When restarting a saw in the workpiece, centre

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 saw is restarted.

d) Support large panels to minimise 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 edge of the panel.

e) Do not use dull or damaged blades. Unsharp-

ened or improperly set blades produce narrow

kerf causing excessive friction, blade binding and

kickback.

f) Blade depth and bevel adjusting locking levers

must be tight and secure before making cut.

If blade adjustment shifts while cutting, it may

cause binding and kickback.

g) Use extra caution when making a “plunge cut”

into existing walls or other blind areas. The

protruding blade may cut objects that can cause

kickback.

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Hilti 3490197 Use and Care Manual Page 10

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