Ridgid R4121 - Manual

7 SYMBOLS SYMBOL SIGNAL MEANING SERVICE Servicing requires extreme care and knowledge and should be performed only by a qualified service technician. For service we suggest you return the product to your nearest AUTHORIZED SERVICE CENTER for repair. When servic- ing, use only identical replacement p...

8 ELECTRICAL DOUBLE INSULATION Double insulation is a concept in safety in electric power tools, which eliminates the need for the usual three-wire grounded power cord. All exposed metal parts are isolated from the internal metal motor components with protect-ing insulation. Double insulated tools d...

9 GLOSSARY OF TERMS Non-Through Cuts Any cutting operation where the blade does not extend completely through the thickness of the workpiece. Push Blocks (for jointer planers) Device used to feed the workpiece over the jointer planer cutterhead during any operation. This aid helps keep the operator'...

10 FEATURES PRODUCT SPECIFICATIONS Blade Diameter .......................................................... 12 in.Arbor Hole .................................................................... 1 in.No Load Speed .....................................4,000 r/min. (RPM)Input ............................

12 FEATURES Fig. 5 REPEAT-A-CUT PADLOCK Fig. 4 SWITCH TRIGGER REPEAT-A-CUT ™ See Figure 5. The Repeat-A-Cut ™ feature on both the left and right side miter fences can be used when making repetitive cuts. Sim-ply mark the fence with a pencil, make the desired number of cut(s), then wipe the mark off ...

13 The following tools (not included) are needed for making adjustments or installing the blade: COMBINATION SQUARE TOOLS NEEDED Fig. 6 COMBINATION WRENCH, 12 mm FRAMING SQUARE PHILLIPS SCREWDRIVER

14 m n The following items are included with your miter saw:  Dust Bag  Dust Guide  Work Clamp  Blade Washer  Blade Bolt  Blade Wrench  Laser Guide (installed on tool)  Hex Bolt (installed on tool)  Hex Key, 4 mm  Hex Key, 5 mm  Hex Key, 1/16 in.  Blade  Operator’s Manual (not shown) Fi...

15 ASSEMBLY UNPACKING This product requires assembly.  Carefully lift saw from the carton by the carrying handle and the saw base, and place it on a level work surface. NOTE: This tool is heavy. To avoid back injury, lift with your legs, not your back, and get help when needed.  This saw has been ...

16 ASSEMBLY NOTE: Many of the illustrations in this manual show only portions of the compound miter saw. This is intentional so that we can clearly show points being made in the illustrations. Never operate the saw without all guards securely in place and in good operating condition. DUST GUIDE See ...

17 WARNING: Make sure the spindle lock button is not engaged before reconnecting saw to power source. Never engage spindle lock button when blade is rotating. INSTALLING THE BLADE See Figure 12. WARNING: A 12 in. blade is the maximum blade capacity of the saw. Never use a blade that is too thick to ...

18 18 ASSEMBLY CUTTING A SLOT IN THE ZERO CLEARANCE THROAT PLATE In order to use your compound miter saw, you must cut a slot through the zero clearance throat plate to allow for blade clearance. To cut the slot, set your saw at 0 ° miter, turn saw on and allow the blade to reach full speed, then ca...

21 ASSEMBLY ADJUSTING THE BEVEL LOCK LEVER See Figures 21 - 23. Prior to squaring the saw blade to the miter table, check the bevel lock lever for proper adjustment. The blade must be set at an “unindexed” bevel position other than 0 ° , 22.5 ° , 33.9 ° , and 45 ° to test. In the “locked” position, ...

22 SCALE INDICATOR INDICATOR SCREW SQUARING THE BLADE TO THE MITER TABLE See Figures 24 - 27.  Unplug the saw.  Pull the saw arm all the way down and lock in transport position.  Lift the miter lock lever to unlock. Rotate the miter table and set the saw at 0 ° miter. NOTE: The miter table will s...

23 OPERATION WARNING: Do not allow familiarity with tools to make you careless. Remember that a careless fraction of a second is sufficient to inflict severe injury. WARNING: Always wear safety goggles or safety glasses with side shields when operating tools. Failure to do so could result in objects...

24 Fig. 28 OPERATION WORK CLAMP CROSS CUT MITER THUMBWHEEL The miter thumbwheel, when used with the miter lock lever lifted (unlocked), can release the miter table from pre-set index points. To align with miter scale:  Lift the miter lock lever to unlock.  Rotate and hold thumbwheel so that the ye...

25 TO BEVEL CUT See Figures 30 - 32. A bevel cut is made by cutting across the grain of the workpiece with the blade angled to the workpiece. A straight bevel cut is made with the miter table set at the zero degree position and the blade set at an angle. NOTE: It may be necessary to adjust or remove...

26 TO COMPOUND MITER CUT See Figure 33. A compound miter cut is a cut made using a miter angle and a bevel angle at the same time. This type of cut is used to make picture frames, cut molding, make boxes with sloping sides, and for certain roof framing cuts. To make this type of cut the control arm ...

27 SUPPORTING LONG WORKPIECES See Figures 34 - 35. Long workpieces need extra supports. Supports should be placed along the workpiece so it does not sag. The support should let the workpiece lay flat on the base of the saw and miter table during the cutting operation. Use the work clamp or a C-clamp...

28 OPERATION MAKING AN AUXILIARY FENCE See Figure 37. Certain unusual cuts may benefit from a thicker miter fence (auxiliary fence) due to the size and position of the workpiece. The holes provided in the miter fence are there for just this purpose. The miter fence holes are used to secure the auxil...

29 CUTTING COMPOUND MITERS To aid in making the correct settings, the compound angle setting chart below has been provided. Since compound cuts are the most difficult to accurately obtain, trial cuts should be made in scrap material, and much thought and planning made, prior to making your required ...

30 OPERATION CUTTING CROWN MOLDING The following chart illustrates the miter and bevel angle settings of the miter saw for both 52˚/38˚ and 45˚/45˚ crown molding, when the angle between the walls run from 67˚ to 146˚. With the crown molding laying flat, cut at the following angles: 67686970717273747...

32 OPERATION MAKING A CROWN MOLDING JIG See Figure 39. A crown molding jig will need to be made when cutting crown molding with no required bevel setting. The jig holds the crown molding in place during the cutting operation. When using this method, the saw can be quickly adjusted for corners that a...

33 CUTTING WARPED MATERIAL See Figures 40 - 41. When cutting warped material, always make sure it is positioned on the miter table with the convex side against the fence as shown in figure 40.If the warped material is positioned the wrong way as shown in figure 40, it will pinch the blade near the c...

34 WARNING: When servicing, use only identical replacement parts. Use of any other part may create a hazard or cause product damage. WARNING: Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If operation is dusty, also wear a dust mask....

35 BRUSH REPLACEMENT See Figure 43. The saw has externally accessible brush assemblies that should be periodically checked for wear. Proceed as follows when replacement is required:  Unplug the saw. WARNING: Failure to unplug the saw could result in accidental starting causing serious injury.  Rem...

36 ACCESSORIES Look for these accessories at The Home Depot.  AC9944 .................................... Miter Saw Utility Vehicle WARNING: Current attachments and accessories available for use with this tool are listed above. Do not use any attachments or accessories not recommended by the manufa...

37 WARRANTY Proof of purchase must be presented when requesting war-ranty service.Limited to RIDGID ® hand held and stationary power tools purchased 2/1/04 and after. This product is manufactured by One World Technologies, Inc. The trademark is licensed from RIDGID ® , Inc. All warranty communicatio...

38 CUSTOMER SERVICE INFORMATION For parts or service, contact your nearest RIDGID authorized service center. Be sure to provide all relevant information when you call or visit. For the location of the authorized service center nearest you, please call 1-866-539-1710 or visit us online at www.ridgid....