Porter-Cable 424MAG, 423MAG instruction manual Kickback

Page 5

￿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:

14.Maintain a firm grip on the saw and position your body and arm in a way that allows you to resist KICKBACK forces. KICKBACK forces can be controlled by the operator, if proper precautions are taken.

15.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.

16.When restarting a saw in the workpiece, center the saw blade in the kerf and check that 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.

17.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.

18.Do not use dull or damaged blade. Unsharpened or improperly set blades produce narrow kerf causing excessive friction, blade binding, and KICKBACK.

19.Blade depth and bevel adjusting locking levers must be tight and secure before making cut. If blade adjustment shifts while cutting, it will cause binding and KICKBACK.

20.Use extra caution when making a “Pocket Cut” into existing walls or other blind areas. The protruding blade may cut objects that can cause

KICKBACK.

21.Some wood contains preservatives which can be toxic. Take extra care to prevent inhalation and skin contact when working with these materials. Request, and follow, all safety information available from your material supplier.

Improper operation or maintenance of this product could result in serious injury and property damage. Read and understand all warnings and operating instructions before using this tool. When using power tools, basic safety precautions should always be followed to reduce the risk of personal injury. For additional information visit our website www.porter-cable.com.

Additional Information regarding the safe and proper operation of power tools (i.e. a safety video) is available from the Power Tool Institute, 1300 Sumner Avenue, Cleveland, OH 44115-2851 (www.powertoolinstitute.com). Additional Information is also available from the National Safety Council, 1121 Spring Lake Drive, Itasca, IL 60143-3201, the American National Standards Institute ANSI 01.1Safety Requirements for Woodworking Machines, and the U.S. Department of Labor regulations.

There are certain applications for which this tool was designed. Porter-Cable strongly recommends that this tool NOT be modified and/or used for any application other than for which it was designed. If you have any questions relative to its application, DO NOT use the tool until you have written Porter-Cable and we have advised you. Technical Service Manager

Porter-Cable Corporation

4825 Highway 45 North Jackson, TN 38305

5

Image 5
Contents Instruction Manual Double Insulated Circular Saw General Safety Rules Safety Guidelines DefinitionsElectrical Safety Work AreaTools USE and Care Personal SafetyService Additional Specific Safety RulesKickback Motor Replacement PartsDisconnect Tool from Power Source AssemblyFunctional Description ForewordInstalling the Blade Telescoping Guard To Adjust Depth of CUT for Normal CuttingTo Adjust for Bevel Cuts Positive Stop LINE-OF-CUT IndicatorUsing Sawdust Exhaust Nozzle HOW to USE the SAW Installing the Optional RIP GuideTighten Guard Against KickbackBevel Cutting CROSS-CUTTINGRipping Maintenance Service and Repairs AccessoriesArizona Georgia Minnesota Canadian PORTER-CABLE Delta Service Centers