Bosch Power Tools CSW41 Kickback causes and related, Lower guard function, VARI-TORQUE Clutch

Page 4

BM 1619X08893 09-13_BM 1619X08893 09-13.qxp 8/29/13 9:04 AM Page 4

This circular saw should not be mounted to a table and converted to a table saw. Circular saws are not designed or intended to be used as table saws.

Kickback causes and related

warnings

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 tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

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.

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 action to eliminate the cause of blade binding.

When restarting a saw 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 saw 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 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 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.

The blade washers and the bolt on your saw have been designed to work as a clutch to reduce the intensity of a kickback. Understand the operation and settings of the VARI-TORQUE CLUTCH. The proper setting of the clutch, combined with firm handling of the saw will allow you to control kickback.

VARI-TORQUE

CLUTCH

Never place your hand behind the saw blade. Kickback could cause the saw to jump backwards over your hand.

Do not use the saw with an excessive depth of cut setting. Too much blade exposure increases the likelihood of the blade twisting in the kerf and increases the surface area of the blade available for pinching that leads to kickback.

Lower guard function

Check lower guard for proper closing before each use. Do not operate saw if lower guard does not move freely and close instantly. Never clamp or tie the lower guard into the open position. If saw is

-4-

Image 4
Contents Call Toll Free for Voir Ver la páginaGeneral Power Tool Safety Warnings Work area safetyElectrical safety Personal safetyService Safety Rules for Circular SawsCutting procedures Lower guard function Kickback causes and relatedVARI-TORQUE Clutch Additional Safety Warnings Some dust created by powerSymbols Name Designation/ExplanationSymbols Functional Description and Specifications Pivot Stud Bevel Adjustment Lever Blade Stud ContourCircular Saws Calibrated Depth BracketAssembly Spring Auxiliary Handle Upper GuardSAW Shaft Inner WasherOperating Instructions Maximum Depth of CUT Stability SET Screw Wrench UsageWrench Slotted Driver Correct IncorrectSwitch General CutsCutting MASONRY/METAL Plunge CutsCutting Large Sheets WrongRight RIP Cuts RIP Board GuideMaintenance CleaningPreventive maintenance Tool LubricationExtension Cords AccessoriesCare of Blades Trouble Shooting Sécurité du lieu de travail Sécurité électriqueConsignes de sécurité pour scies circulaires Utilisation et entretien des outils ÉlectroportatifsEntretien Procédures de coupeFonction du garde inférieur Embrayage VARI-TORQUEAvertissements supplémentaires concernant la sécurité Le plomb provenant des peintures à base de plombSymboles Symbole Nom Désignation/ExplicationSymboles suite Graduée en fonction des dimensions Standard du bois d’œuvre Description fonctionnelle et spécificationsScies circulaires Ressort DE ButéeAssemblage Embrayage « VARI-TORQUE »’ARBRE DE LA Scie Lame Goujon DE Lame Rondelle ExterieureConsignes d’utilisation Reglage DE LA Profondeur DE CoupeLevier DE Reglage DE LA Profondeur FIG Levier DE Réglage DU Biseau Guide D’ALIGNEMENTVIS DE Réglage Utilisation DE LA CLÉ CLÉ DE 1/2 POCLÉ DE 9/16 PO CoinInterrupteur Coupes RegulierèsMouvement de la garde inférieure Sciage DES Matériaux DE Maçonnerie ET DES MétauxCoupe DE Grandes Feuilles Mauvaise ManièreBonne Manière Coupes DE Refente Utilisation D’UNE Planche Comme Guide DE RefenteEntretien De l’entretenirLubrification DE L’OUTIL Balais DE CharbonCordons de rallonge AccessoiresEntretien DES Lames Guide de diagnostic Seguridad eléctrica Seguridad del área de trabajoSeguridad personal Normas de seguridad para sierras circulares MecánicasServicio de ajustes y reparaciones Procedimientos de corteRelacionadas Embrague DE PAR Motor VariableAdvertencias de seguridad adicionales Función del protector inferiorSímbolos Símbolo Nombre Designación/explicaciónSímbolos continuación Descripción funcional y especificaciones Sierras circularesEnsamblaje Protector SuperiorEJE DE LA Sierra Inferior HojaInstrucciones de funcionamiento Utilización DE LA Llave DE Tuerca DE Corte MáximaTuerca Con la orientación Guía DE Interruptor Cortes GeneralesCorte DE Mampostería Y Metal Cortes POR InmersiónCorte DE Planchas Grandes Correcto Cortes AL HiloTABLERO-GUIA Para Cortar AL Hilo Linea DE Corte DeseadaMantenimiento ServicioLimpieza Lubricacion DE LAS HerramientasAccesorios Cordones de extensiónCuidado DE LAS Hojas Resolución de problemas Avería LA Sierra no ArrancaAvería LA Hoja no Alcanza Toda SU Velocidad Avería Vibración ExcesivaRemarques Notas 1619X08893