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OPERATOR'S MANUAL
7-1/4 in. (184 mm) CIRCULAR SAW
Model CSB131
DOUBLE INSULATED
THANK YOU FOR BUYING A RYOBI CIRCULAR SAW.
Your new circular saw has been engineered and manufactured to Ryobi's high standard for dependability, ease of
operation, and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.
CAUTION: Carefully read through this entire operator's manual before using your new circular saw.
Pay close attention to the Rules for Safe Operation, War
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TABLE OF CONTENTS ■ Introduction ........................................................................................................................................................2 ■ General Safety Rules .....................................................................................................................................3-4 ■ Specific Safety Rules..................................................................................................................................
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GENERAL SAFETY RULES ■ Dress properly. Do not wear loose clothing or WARNING: jewelry. Contain long hair. Keep your hair, cloth- ing, and gloves away from moving parts. Loose Read and understand all instructions. Failure to clothes, jewelry, or long hair can be caught in mov- follow all instructions listed below, may result in ing parts. electric shock, fire and/or serious personal injury. ■ Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger SAVE
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GENERAL SAFETY RULES ■ Check for misalignment or binding of moving SERVICE parts, breakage of parts, and any other condi- ■ Tool service must be performed only by quali- tion that may affect the tool’s operation. If dam- fied repair personnel. Service or maintenance per- aged, have the tool serviced before using. Many formed by unqualified personnel could result in a risk accidents are caused by poorly maintained tools. of injury. ■ Use only accessories that are recommended by ■ When servicing a
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SPECIFIC SAFETY RULES Kickback is the result of tool misuse and/or incorrect ■ Support large panels to minimize the risk of operating procedures or conditions and can be avoided blade pinching and KICKBACK. Large panels by taking proper precautions, as given below: tend to sag under their own weight. Supports must be placed under the panel on both sides, near the ■ Maintain a firm grip with both hands on the saw line of cut and near the edge of the panel. and position your body and arm to allow
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ADDITIONAL SAFETY RULES Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its cord. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator. ■ Know your power tool. Read operator’s manual ■ Inspect for and remove all nails from lumber be- carefully. Learn its applications and limitations, fore sawing. Following this rule will reduce the risk as well as the specific potential hazards
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SYMBOLS Important: Some of the following symbols may be used on your tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer. SYMBOL NAME DESIGNATION/EXPLANATION V Volts Voltage A Amperes Current Hz Hertz Frequency (cycles per second) W Watt Power min Minutes Time Alternating Current Type or a characteristic of current n No
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SPECIFICATIONS Blade Diameter 7-1/4 in. (184 mm) Blade Arbor 5/8 in. (16 mm) Cutting Depth at 0° 2-3/8 in. (60 mm) Cutting Depth at 45° 1-13/16 in. (46 mm) Cutting Depth at 51.5° 1-5/8 in. (41 mm) Rating 120 volts, 60 Hz, AC Input 13 amperes No Load Speed 5500 RPM Net Weight 12 lbs. (5.4 kg) UNPACKING INSTRUCTIONS PACKING LIST Your circular saw has been shipped completely Circular Saw assembled. 7-1/4 in. (184 mm) Blade ■ Carefully remove the tool and accessories from the Case box. Make sure tha
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FEATURES DOUBLE INSULATION SWITCH Your Ryobi power tool is double insulated. This means Your circular saw is equipped with a pre-travel safety you are separated from the tool's electrical system by switch which reduces the possibility of accidental starting. two complete sets of electrical insulation. This extra When you depress the switch, the saw will not start until layer of insulation is intended to protect the user from you reach the pre-travel position. You must depress the electrical shoc
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FEATURES SWITCH UPPER BLADE GUARD BLADE DEPTH ADJUSTMENT KNOB LOWER BLADE GUARD BASE HANDLE SPINDLE LOCK BUTTON MOTOR LOWER BLADE HOUSING GUARD HANDLE BEVEL ADJUSTMENT KNOB Fig. 1 WARNING: Do not attempt to modify this tool or create accessories not recommended for use with this tool. Any such alteration or modification is misuse and could result in a hazardous condition leading to possible serious personal injury. 10
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ASSEMBLY WARNING: SPINDLE Your tool should never be connected to power supply OUTER when you are assembling parts, making adjustments, WASHER BLADE cleaning, performing maintenance, or when not in (“D” use. Disconnecting your tool will prevent accidental WASHER) starting that could cause serious injury. WARNING: 7-1/4 in. (184 mm) blade is the maximum blade INNER capacity of your saw. Also, never use a blade that is FLANGE too thick to allow outer blade washer to engage with BUSHING BLADE the f
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ASSEMBLY REMOVING BLADE SPINDLE See Figure 4. LOCK BUTTON Follow these directions to remove the blade. ■ UNPLUG YOUR CIRCULAR SAW. WARNING: Failure to unplug the tool could result in accidental starting causing serious injury. CAUTION: To prevent damage to the spindle or spindle lock, BLADE always allow motor to come to a complete stop before SCREW engaging spindle lock. WRENCH ■ Depress spindle lock button. Fig. 4 ■ Remove blade screw by turning it counterclockwise with the wrench. ■ Lift lower
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OPERATION KICKBACK See Figure 6, 7, 8, and 9. Kickback occurs when the blade stalls rapidly and the saw is driven back towards you. Blade stalling is caused by any action which pinches the blade in the wood. DANGER: Release switch immediately if blade binds or saw stalls. Kickback could cause you to lose control of KICKBACK - BLADE SET TOO DEEP your saw. Loss of control can lead to serious injury. Fig. 6 To guard against kickback, avoid dangerous practices such as the following. INCORRECT ■ Sett
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OPERATION STARTING/STOPPING THE SAW See Figure 10. SWITCH To start the saw: Depress the switch trigger. Always let the blade reach full speed, then guide the saw into the workpiece. WARNING: The blade coming in contact with the workpiece before it reaches full speed could cause your saw to “kickback” towards you resulting in serious injury. To stop the saw: Release the switch trigger. Fig. 10 After you release the switch trigger, allow the blade to come to a complete stop. Do not remove the sa
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OPERATION OPERATING THE SAW See Figures 12, 13, and 14. It is important to understand the correct method for operating your saw. Refer to the figures in this section to learn the correct and incorrect ways for handling your 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. DANGER: When lifting your saw from the workpiece, the blade is exposed on the underside of the saw until the
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OPERATION CROSS CUTTING/RIP CUTTING TOP VIEW OF SAW See Figure 15. 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 BLADE GUIDE accurate cut. NOTCH NOTE: The distance from the line of cut to the guideline is the amount you should offset the guideline. TO RI
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OPERATION BEVEL CUTTING See Figures 17 and 18. MOTOR HOUSING To make the best possible cut, follow these helpful hints. ■ Align the line of cut with the inner blade guide notch on the base when making 45° bevel cuts. ■ Make a trial cut in scrap material along a guideline to determine how much you should offset the guideline on the cutting material. BEVEL SCALE ■ Adjust the angle of the cut to any desired setting between zero and 51.5°. Refer to “TO ADJUST BEVEL SETTING” next. TO ADJUST BEVEL SET
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OPERATION POSITIVE 0° BEVEL STOP See Figure 19. Your saw has a positive 0° bevel stop, that has been factory adjusted to assure 0° angle of the saw blade when making 90° cuts. However, misalignment can occur during shipping. BEVEL TO CHECK POSITIVE 0° BEVEL STOP ADJUSTMENT KNOB Follow these directions to check the positive 0° bevel stop. ■ UNPLUG YOUR CIRCULAR SAW. SETSCREW WARNING: CARPENTER’S SQUARE Failure to unplug the tool could result in accidental starting causing serious injury. ■ Place
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OPERATION POCKET CUTTING See Figure 21. WARNING: Always adjust bevel setting to zero before making a LOWER pocket cut. Attempting a pocket cut at any other BLADE setting can result in loss of control of your saw GUARD possibly causing serious injury. Follow these directions to pocket cut. ■ Adjust the bevel setting to zero. ■ Set the blade to the correct blade depth setting. ■ Swing the lower blade guard up using the lower blade guard handle. LOWER BLADE NOTE: Always raise the lower blade guard
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ACCESSORIES RIP GUIDE Use the rip guide provided, part no. 969862-009, when making long or wide rip cuts with your saw. TO ASSEMBLE RIP GUIDE See Figure 22. Follow these directions to assemble the rip guide. ■ UNPLUG YOUR CIRCULAR SAW. WARNING: RIP GUIDE Failure to unplug the tool could result in accidental SCREW starting causing serious injury. ■ Place rip guide through holes in base as shown in the figure. RIP GUIDE ■ Adjust rip guide to the width needed. ■ Tighten rip guide knob securely. TO
