RIDGID R4121 manual Accessories, Checking Motor Belt Tension and Replacing the Belt

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MAINTENANCE

CHECKING MOTOR BELT TENSION AND REPLACING THE BELT

See Figure 45.

The motor belt tension was adjusted at the factory but should still be checked periodically.

To check belt tension:

Using a phillips screwdriver, remove the screws holding the belt cover on the right side of the saw arm. Lift off the cover.

The belt tension is correct when the tension mark on the spring bracket is between “C” and “D” (see figure 54).

To adjust belt tension:

Using a phillips screwdriver, remove the screws holding the drive pulley cover on the left side of the saw arm. Lift off the cover.

Remove the screws holding the carrying handle on the saw arm, then remove the carrying handle.

Loosen, but don’t remove, the motor mount screws.

Increase the belt tension by turning the adjusting socket head set screw clockwise. Decrease the belt tension by turning the set screw counterclockwise.

NOTE: Excessive belt tension will cause the motor to fail prematurely.

Once the tension mark on the spring bracket is between “C” and “D”, securely tighten the motor mount screws.

Replace the belt and drive pulley covers and tighten securely using screws.

NOTE: Cord must never touch the belt.

To replace the belt:

Take it in to an authorized service center for RIDGID® tools. You may obtain the location of the authorized service center nearest you by calling (toll free) 1-866-539-1710 or by logging on to the RIDGID® website at www.ridgid.com.

D

TENSION

MARK

SPRING

BRACKET

SCREW

CARRYING HANDLE

CORD

ADJUSTING

SOCKET HEAD

SCREW

MOTOR

MOUNT

SCREWS

C

IDLER

PULLEY

BELT

BELT COVER

DRIVE

PULLEY

COVER

Fig. 45

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 manufacturer of this tool. The use of attachments or accessories not recommended can result in serious personal injury.

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Contents OPERATOR’S Manual Table of Contents IntroductionGeneral Safety Rules Read ALL Instructions Blade Coasts After Being Turned OFF Specific Safety Rules  Before Making a CUT, be Sure ALL ADJUST- Ments are SecureSpecific Safety Rules Symbols Symbol Name DESIGNATION/EXPLANATIONService Symbol Signal MeaningCord Length Wire Size A.W.G ElectricalDouble Insulation Electrical ConnectionGlossary of Terms Features Product SpecificationsMiter ScaleKnow Your Compound Miter SAW 12 IN. BladeAMP Motor Blade Wrench StorageSwitch Trigger REPEAT-A-CUTSELF-RETRACTING Lower Blade Guard Sliding Miter FencesTools Needed Combination WRENCH, 12 mmPhillips Screwdriver Combination Square Framing Square Installed on Tool Loose PartsBlade Washer Bolt Work Clamp Dust BAG HEX KEY HEX KEY, 1/16Assembly UnpackingMounting Holes Trace HolesInstalling the Work Clamp To install the work clampDust Guide Dust BAGInstalling the Blade Tighten Securely To Prevent Guard MovementBlade Blade Laser Guide Loosen TightenCutting a Slot in the Zero Clearance Throat Plate Aligning the Laser Guide LineBroken Line Adjusting the Miter Lock Lever To adjustSquaring the SAW Blade to the Fence Miter Lock Lever Lift to Unlock Push Down to LockView of Blade Square with Fence Adjusting the Bevel Lock Lever Adjusting the Bevel PivotTravel Pivot Adjustment Push Back To Lock BevelSquaring the Blade to the Miter Table See Figures 24Blade Bevel Lock Lever Correct View of BladeOperation ApplicationsCutting with Your Compound Miter SAW To bypass preset index points To Miter CUT / Cross CUTTo align with miter scale See Figures 28To Bevel CUT See Figures 30Bevel Lock Bevel Scale Stop PIN Bevel CUT ClampTo Compound Miter CUT Compound Miter CUTSupporting Long Workpieces Clamping Wide Workpieces45 x 45 Compound Miter CUT Long WorkpieceMaking AN Auxiliary Fence To attach the auxiliary fence to the sawAuxiliary Fence COMPOUND-ANGLE Settings for Popular Structures Cutting Compound MitersCutting Crown Molding 38˚ / 52˚ 45˚/45˚Angle Miter / Bevel MITER/BEVEL 38˚/52˚ 45˚/45˚Laying Molding Flat on the Miter Table CeilingInside Corner Fence Using a Crown Molding JIG Making a Crown Molding JIGCrown Molding JIG Cutting Warped Material See Figures 40Wrong RightAdjustments MaintenanceTo Adjust the Laser Guide General MaintenanceBrush Replacement Proceed as follows when replacement is requiredChanging the Batteries Accessories Checking Motor Belt Tension and Replacing the BeltWarranty DAY Satisfaction Guarantee PolicyWhat is Covered Under the 3 Year Limited Service Warranty HOW to Obtain Service What is not CoveredCustomer Service Information Model No R4121 Serial No

R4121 specifications

The RIDGID R4121 is a powerful and versatile table saw that has made a significant impact in the woodworking and construction industries. This innovative tool is designed to meet the needs of both professional contractors and DIY enthusiasts, offering a blend of performance, precision, and portability.

One of the standout features of the R4121 is its robust 15-amp motor, which provides ample power to handle a wide range of cutting tasks. This motor delivers a no-load speed of 5,000 RPM, allowing users to rip through hardwoods, softwoods, and composite materials with ease. The saw's 10-inch blade gives users the ability to make clean, straight cuts, while the adjustable blade height and angle settings enable bevel cuts and varied depths for more complex woodworking projects.

Portability is a key characteristic of the RIDGID R4121. With its compact design and lightweight construction, it can be easily transported to job sites or moved around the workshop. The saw features a sturdy folding stand that can be set up quickly, providing stability while saving valuable space when not in use. This makes it an ideal choice for those who need a dependable table saw that doesn’t sacrifice performance for portability.

In terms of safety, the R4121 is equipped with an array of features designed to protect users during operation. It includes a blade guard for added protection, an anti-kickback pawl for preventing kickbacks, and an emergency stop switch for quick shutdown in case of an unexpected emergency. These safety features enhance user confidence, making it a smart choice for both novice and experienced woodworkers.

The Ridgid R4121 also incorporates advanced technologies to enhance usability and precision. The rack and pinion fence system ensures accurate and consistent cuts, allowing users to make easy adjustments for various workpieces. Additionally, the miter gauge included with the saw provides added versatility for cross-cutting and angled cuts, making it suitable for a diverse array of projects.

Overall, the RIDGID R4121 is a well-rounded table saw that excels in performance, safety, and convenience. Whether you’re tackling home improvement tasks or working on larger construction projects, this tool is designed to deliver reliability and professional-grade results, making it a valuable addition to any workshop. With its combination of power, portability, and precision, the R4121 is poised to become a favorite among users who demand quality and performance in their woodworking tools.
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