OPERATOR’S MANUAL 7-1/4 in. LASER CIRCULAR SAW DOUBLE INSULATED CSB141LZ Your laser circular saw has been engineered and manufactured to our high standard for dependability, ease of operation, and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance. WARNING: To reduce the risk of injury, the user must read and understand the operator's manual before using this product. Thank you for your purchase.
TABLE OF CONTENTS n Introduction ..................................................................................................................................................................... 2 n Warranty .......................................................................................................................................................................... 2 �n General Safety Rules .......................................................................................................
GENERAL SAFETY RULES n Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger on the switch or plugging in tools that have the switch on invites accidents. n Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool may result in personal injury. n Do not overreach. Keep proper footing and balance at all times.
GENERAL SAFETY RULES SERVICE n When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to follow Maintenance Instructions may create a risk of electric shock or injury. n Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel could result in a risk of injury.
SPECIFIC SAFETY RULES n Make sure your extension cord is in good condition. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. A wire gage size (A.W.G.) of at least 12 is recommended for an extension cord 50 feet or less in length. A cord exceeding 100 feet is not recommended. If in doubt, use the next heavier gage. The smaller the gage number, the heavier the cord.
SYMBOLS Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOLS The following signal words and meanings are intended to explain the levels of risk associated with this product. SYMBOL SIGNAL MEANING DANGER: Indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury. WARNING: Indicates a potentially hazardous situation, which, if not avoided, could result in death or serious injury. CAUTION: Indicates a potentially hazardous situation, which, if not avoided, may result in minor or moderate injury.
ELECTRICAL DOUBLE INSULATION EXTENSION CORDS Double insulation is a concept in safety in electric power tools, which eliminates the need for the usual threewire grounded power cord. All exposed metal parts are isolated from the internal metal motor components with protecting insulation. Double insulated tools do not need to be grounded. When using a power tool at a considerable distance from a power source, be sure to use an extension cord that has the capacity to handle the current the tool will draw.
FEATURES PRODUCT SPECIFICATIONS n Blade Diameter ................................................. 7-1/4 in. n Input............................ 120 V, 60 Hz, AC Only, 14 Amps n Blade Arbor...........................................................5/8 in. n No Load Speed.............................................5,500 /min. n Cutting Depth at 0°........................................... 2-3/8 in. n Net Weight ........................................................... 11 lbs.
FEATURES KNOW YOUR LASER CIRCULAR SAW LASER GUIDES See Figure 1. The laser guides will generate a red laser beam on the work surface in front of and behind the saw when turned on. Before attempting to use this product, familiarize yourself with all operating features and safety rules. SWITCH DUST CHUTE The circular saw is equipped with a pre-travel safety switch which reduces the possibility of accidental starting.
ASSEMBLY BLADE GUARD HANDLE WARNING: A 7-1/4 in. blade is the maximum blade capacity of the saw. Also, never use a blade that is too thick to allow outer blade washer to engage with the flat on the spindle. Larger blades will come in contact with the blade guards, while thicker blades will prevent blade screw from securing blade on spindle. Either of these situations could result in a serious accident.
ASSEMBLY REMOVING BLADE SPINDLE LOCK BUTTON See Figure 4. n Unplug the saw. n Depress spindle lock button. n Remove blade screw by turning it counterclockwise with the wrench. n Remove spring washer and outer blade washer (“D” washer). n Lift lower blade guard. n Remove blade. EDGE GUIDE See Figure 5. Use the edge guide when making long or wide rip cuts with the saw. n Unplug the saw. BLADE SCREW WRENCH n Place edge guide through holes in base. n Adjust edge guide to the width needed. Fig.
OPERATION WARNING: Do not allow familiarity with tools to make you careless. Remember that a careless fraction of a second is sufficient to inflict serious injury. WARNING: Always wear safety goggles or safety glasses with side shields when operating power tools. Failure to do so could result in objects being thrown into your eyes resulting in possible serious injury. No more than 1/4 inch KICKBACK - BLADE SET TOO DEEP WARNING: Fig.
OPERATION To lessen the chance of kickback: n Keep the blade at the correct depth setting. The depth setting should not exceed 1/4 in. (6.35 mm) below the material being cut. n Inspect the workpiece for knots or nails before cutting. Never saw into a knot or nail. n Make straight cuts. Always use a straight edge guide when rip cutting. This helps prevent twisting the blade. n Use clean, sharp, and properly set blades. Never make cuts with dull blades. n Support the workpiece properly before beginning a cut.
OPERATION STARTING/STOPPING THE SAW See Figure 11. To start the saw: Depress the switch trigger. Always let the blade reach full speed, then guide the saw into the workpiece. SWITCH WARNING: The blade coming in contact with the workpiece before it reaches full speed could cause the saw to “kickback” towards you resulting in serious injury. To stop the saw: Release the switch trigger. After you release the switch trigger, allow the blade to come to a complete stop.
OPERATION OPERATING THE SAW See Figures 13 - 15. It is important to understand the correct method for operating the saw. Refer to the figures in this section to learn the correct and incorrect ways for handling the saw. WARNING: To make sawing easier and safer, always maintain proper control of the saw. Loss of control could cause an accident resulting in possible serious injury.
OPERATION USING THE LASER GUIDES See Figure 16. LASER GUIDE BUTTON WARNING: Do not stare into the laser beams or turn the lasers on when the tool is not in use. Failure to heed this warning could result in possible serious personal injury. The laser guides will generate a red colored laser beam on the work surface in front of and behind the saw when turned on. The front laser aids in following the line of cut when cutting the workpiece.
OPERATION CROSS CUTTING/RIP CUTTING TOP VIEW OF SAW See Figures 18 - 20. When making a cross cut or rip cut, align the line of cut with the outer blade guide notch on the base as shown in the figure. Since blade thicknesses vary, always make a trial cut in scrap material along a guideline to determine how much, if any, you must offset the guideline to produce an accurate cut. BLADE GUIDE NOTCH NOTE: The distance from the line of cut to the guideline is the amount you should offset the guide.
OPERATION BEVEL CUTTING MOTOR HOUSING See Figures 21 - 22. To make the best possible cut: n Align the line of cut with the inner blade guide notch on the base when making 45° bevel cuts. n Make a trial cut in scrap material along a guideline to determine how much you should offset the guideline on the cutting material. n Adjust the angle of the cut to any desired setting between zero and 51.5°. BEVEL SCALE TO ADJUST BEVEL SETTING See Figure 21. n Unplug the circular saw. n Loosen bevel adjustment knob.
OPERATION POSITIVE 0° BEVEL STOP See Figure 23. The saw has a positive 0° bevel stop that has been factory adjusted to assure 0° angle of the saw blade when making 90° cuts. TO CHECK POSITIVE 0° BEVEL STOP n Unplug the circular saw. n Place the saw in an upside down position on a workbench. �� �� �� �� BEVEL ADJUSTMENT KNOB n Check the squareness of the saw blade to the base of the saw using a combination square. COMBINATION SQUARE TO ADJUST POSITIVE 0° BEVEL STOP n Unplug the circular saw.
OPERATION POCKET CUTTING See Figures 24 - 25. WARNING: LOWER BLADE GUARD Always adjust bevel setting to zero before making a pocket cut. Attempting a pocket cut at any other setting can result in loss of control of the saw possibly causing serious injury. n Adjust the bevel setting to zero. n Set the blade to the correct blade depth setting. n Swing the lower blade guard up using the lower blade guard handle. NOTE: Always raise the lower blade guard with the handle to avoid serious injury.
ADJUSTMENTS WARNING: FRONT LASER ADJUSTING SCREW Before performing any adjustment, remove blade from saw. Failure to do so could result in possible serious personal injury. WARNING: DO NOT point the laser at yourself or others. Class IIIa lasers will burn the retinas and could cause serious injury to the eyes. WARNING: Use of controls or adjustments or performance other than those specified herein could result in hazardous radiation exposure. Fig.
ADJUSTMENTS To adjust the lasers in a rotational direction: n Remove the blade. n Plug in the saw. n Rest the back of the base on scrap workpiece. n Insert a flathead screwdriver into the laser barrel slot. n Turn laser on. NOTE: DO NOT look directly into the laser beam. n Turn the barrel left or right as necessary. n Since blade thicknesses vary, always make a trial cut in scrap workpiece to ensure an accurate cut. n Check for proper alignment. n Repeat as necessary until laser is aligned.
OPERATOR’S MANUAL 7-1/4 in. LASER CIRCULAR SAW DOUBLE INSULATED CSB141LZ • SERVICE Now that you have purchased your tool, should a need ever exist for repair parts or service, simply contact your nearest Authorized Service Center. Be sure to provide all pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest Authorized Service Center. You can also check our web site at www.ryobitools.com for a complete list of Authorized Service Centers. • MODEL NO. AND SERIAL NO.