Hilti SC 4WL-22 Mode D'emploi page 27

▶ When restarting a saw in the workpiece, centre the saw blade in the kerf so that the saw teeth are
not engaged into the material. If a saw blade binds, it may walk up or kickback from the workpiece as
the saw is restarted.
▶ 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.
▶ Do not use dull or damaged blades. Unsharpened or improperly set blades produce narrow kerf
causing excessive friction, blade binding and kickback.
▶ Blade depth and bevel adjusting locking levers must be tight and secure before making the cut. If
blade adjustment shifts while cutting, it may cause binding and kickback.
▶ Use extra caution when sawing into existing walls or other blind areas. The protruding blade may
cut objects that can cause kickback.
Lower guard function
▶ Check the lower guard for proper closing before each use. Do not operate the saw if the lower
guard does not move freely and close instantly. Never clamp or tie the lower guard into the open
position. If the saw is accidentally dropped, the lower guard may be bent. Raise the lower guard with
the retracting handle and make sure it moves freely and does not touch the blade or any other part, in all
angles and depths of cut.
▶ Check the operation 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 build-up of debris.
▶ The lower guard may be retracted manually only for special cuts such as "plunge cuts" and
"compound cuts". Raise the lower guard by the retracting handle and as soon as the blade enters
the material, the lower guard must be released. For all other sawing, the lower guard should operate
automatically.
▶ Always observe that the lower guard is covering the blade before placing the saw down on bench
or floor. An unprotected, coasting blade will cause the saw 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.
2.3 Additional safety instructions
Personal safety
▶ Never tamper with or modify the product or accessories in any way.
▶ Operate the power tool only together with the safety devices that belong to it.
▶ If you use the power tool without a dust extractor, always wear light respiratory protection when
undertaking work that creates dust.
▶ Always hold the power tool firmly with both hands on the grips provided.
▶ Wear ear protectors. Exposure to noise can cause hearing loss.
▶ Improve the blood circulation in your fingers by relaxing your hands and exercising your fingers during
breaks between working.
▶ The power tool is not intended for use by debilitated persons who have received no special training.
▶ Do not switch the power tool on until it is at the workplace and has been brought to its working position.
▶ Remove the battery if a problem occurs with the power tool, whenever you change accessory tools or
accessories and before storing or transporting the power tool.
▶ Do not work overhead with the power tool.
▶ Do not attempt to brake the power tool by applying lateral pressure to the saw blade.
▶ Before inserting the battery, check that the saw is switched off and that the switch-on interlock is
activated. In this way you avoid injuries due to unintentional starting of the power tool.
▶ While the power tool is running, do not touch the clamping flange or the clamping screw.
▶ Before you lay down the power tool, wait until the power tool has come to a complete stop.
▶ Before changing the accessory tool, wait until the power tool has cooled down.
▶ Never press the drive spindle lock button while the saw blade is rotating.
▶ Never direct the power tool toward persons.
▶ The switch-on interlock must always be activated whenever you change accessories or the battery, for
transport and when you are going to stow the power tool away.
▶ Always use a saw blade suitable for the material and the condition of the workpiece.
▶ Adapt forward pressure to the saw blade and the material being cut. In this way you prevent the saw
blade from stalling and possibly causing kickback.
▶ Make sure that the path of the saw is free of obstructions such as nails, screws and other metal objects.
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2276127 English 21