RIDGID R4850 13-inch Portable Planer Operator's Manual

Model: R4850

Introduction and Safety First

Your RIDGID® Model R4850 is a 13-inch (330mm) Portable Planer engineered for dependability, ease of operation, and operator safety. When properly cared for, it will provide 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. Save this manual for future reference.

Functional Description

Foreword

The RIDGID® Model R4850 is a 13-inch (330mm) Portable Planer with a cutting capacity of 13 inches (330mm) wide, 6 inches (152mm) thick, and 1/8 inch (3.2mm) deep. It features a powerful 15-amp, 120-volt motor and a three-knife cutterhead.

NOTICE: The cover illustration shows the current production model. Other illustrations are representative and may not depict actual labeling or accessories. They are intended to illustrate technique only.

Motor Specifications

Your machine operates on 120-volt, 60 Hz alternating current. Ensure the switch is in the "OFF" position before connecting to the power source.

Specifications:
Model:R4850
Supply Voltage:120 V AC~
Current:15 A
Frequency:60 Hz
No Load RPM:10,000/min

Features

The planer has several key components:

  • F1 Cutterhead Height Adjusting Handle: Used to raise or lower the cutterhead.
  • F2 Micro Adjustment: For fine adjustments to the cutterhead height.
  • F3 Main Housing: The main body of the planer.
  • F4 Indicator Arrow: Points to the depth setting.
  • F5 Base: Provides stability for the unit.
  • F6 In-feed Table: Where material is initially placed.
  • F7 Depth Stop Knob / Lock: Used to set a minimum depth of cut.
  • F8 Material Removal Gauge: Indicates the amount of material removed per pass.
  • F9 On/Off Switch: Paddle switch to start and stop the planer.
  • F10 Reset Button: For the circuit breaker.
  • F11 Dust Deflector: Directs chips away from the workpiece.
  • F12 Wear Table: Supports the workpiece during planing.
  • F13 Out-feed Table: Where the planed material exits.
  • F14 Cutterhead Lock Handle: Prevents the cutterhead from moving unintentionally.
  • F15 Wrench Storage: Located under the table for tool storage.
  • F16 Dust Collection Attachment: Port for connecting a dust collection system.

Figure 1 illustrates these features with labeled components.

Safety Information

Important Safety Instructions

WARNING: READ AND UNDERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING ANY TOOL OR EQUIPMENT. ALWAYS FOLLOW BASIC SAFETY PRECAUTIONS TO REDUCE THE RISK OF PERSONAL INJURY. IMPROPER OPERATION, MAINTENANCE, OR MODIFICATION OF TOOLS OR EQUIPMENT COULD RESULT IN SERIOUS INJURY AND PROPERTY DAMAGE. DO NOT MODIFY OR USE THIS PRODUCT FOR ANY APPLICATION OTHER THAN THAT FOR WHICH IT WAS DESIGNED.

For questions or concerns, contact RIDGID® Customer Service at 1-888-359-4778. Additional safety resources are available from the Power Tool Institute, National Safety Council, American National Standards Institute (ANSI), and the U.S. Department of Labor (OSHA).

Safety Guidelines - Definitions

This manual uses symbols to highlight important safety information:

  • 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.
  • CAUTION: Indicates a practice not related to personal injury which, if not avoided, may result in property damage.

The following symbols may also appear on the tool:

SYMBOLNAMEDESIGNATION/EXPLANATION
?Safety AlertIndicates a potential personal injury hazard.
?Read Operator's ManualTo reduce the risk of injury, user must read and understand the operator's manual before using this product.
?Eye ProtectionAlways wear eye protection with side shields marked to comply with ANSI Z87.1.
✋❌No Hands SymbolFailure to keep your hands away from the blade will result in serious personal injury.
?️Wet Conditions AlertDo not expose to rain or use in damp locations.
?Pinch WarningAlways watch for movement, paying extra attention to potential areas where pinching could occur.
VVoltsVoltage
AAmperesCurrent
HzHertzFrequency (cycles per second)
minMinutesTime
~/ACAlternating CurrentType of current
RPMRevolutions Per MinuteRotational speed, at no load
PH:1Phase 1This is a 1 phase motor
Double InsulationTo reduce the risk of electric shock, this equipment has a polarized plug (one blade is wider than the other). If the plug does not fit, contact a qualified electrician. DO NOT change the plug.

General Safety Rules

WARNING: Failure to follow these rules may result in serious personal injury.

  1. Read the instruction manual before operating.
  2. Wear approved eye and hearing protection (ANSI Z87.1, ANSI S3.19).
  3. Wear proper apparel; avoid loose clothing, jewelry, and tie back long hair. Use non-slip footwear.
  4. Do not use in dangerous environments (damp, wet, or poorly lit areas).
  5. Do not operate near flammable liquids or explosive atmospheres.
  6. Maintain tools in peak condition; keep them sharp and clean.
  7. Check for damaged parts before use. Replace damaged parts with authorized replacements.
  8. Keep the work area clean.
  9. Keep children and visitors away from the work area.
  10. Reduce the risk of unintentional starting: ensure the switch is OFF before plugging in. Move switch to OFF during power failure.
  11. Use all guards and safety devices.
  12. Remove adjusting keys and wrenches before starting.
  13. Use the right machine for the job; do not force it.
  14. Use only recommended accessories.
  15. Use the proper extension cord (heavy enough, 3-wire grounding type).
  16. Secure the workpiece with clamps or a vise.
  17. Feed workpiece against the direction of rotation.
  18. Do not force the workpiece.
  19. Do not overreach; maintain balance.
  20. Never stand on the machine.
  21. Never leave the machine running unattended. Turn power OFF and wait for it to stop completely.
  22. Turn the machine OFF and disconnect from power before making adjustments, installing/removing accessories, or performing repairs. Lock the switch in the OFF position.
  23. Make your workshop childproof.
  24. Stay alert, watch what you are doing, and use common sense. Do not operate when tired or under the influence of drugs, alcohol, or medication.
  25. WARNING: Use of this tool can generate and disperse dust, including wood dust, crystalline silica, and asbestos dust. Operate in a well-ventilated area, use dust collection, and wear appropriate respiratory protection (NIOSH/OSHA approved). Avoid prolonged contact with dust and wash exposed areas.

Additional Specific Safety Rules

WARNING: FAILURE TO FOLLOW THESE RULES MAY RESULT IN SERIOUS PERSONAL INJURY.

  1. Ensure the machine is completely assembled and installed correctly.
  2. Obtain advice from qualified personnel if unfamiliar with operation.
  3. Follow all wiring codes and recommended electrical connections.
  4. Keep knives sharp and free from rust and pitch.
  5. Never turn the machine ON before clearing the table of all objects.
  6. Never turn the machine ON with the workpiece contacting the cutterhead.
  7. Secure the machine to a supporting surface.
  8. Properly secure knives in the cutterhead before powering ON.
  9. Do not place the power cord under the cutterhead when moving or storing.
  10. Avoid awkward operations and hand positions.
  11. Keep arms, hands, and fingers away from the cutterhead, chip exhaust, and feed rollers.
  12. Never reach into the cutterhead area while the machine is running.
  13. Do not stand in line of the workpiece path.
  14. Allow the cutterhead to reach full speed before feeding.
  15. When planing bowed stock, place the concave side down and cut with the grain.
  16. Do not feed warped, knotted, or foreign-object-embedded workpieces.
  17. Do not feed short, thin, or narrow workpieces.
  18. Do not feed workpieces into the out-feed end.
  19. Remove shavings only with the power OFF.
  20. Use for wood only; do not plane man-made materials.
  21. Properly support long or wide workpieces.
  22. Never perform layout, assembly, or set-up work while the machine is running.
  23. Turn the machine OFF, disconnect from power, clean the area, and lock the switch OFF before leaving.
  24. Refer to external resources for additional safety information.

SAVE THESE INSTRUCTIONS.

Proposition 65 Warning

WARNING: Dust created by power tools may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm (e.g., lead, crystalline silica, asbestos, arsenic, chromium). Reduce exposure by working in a well-ventilated area, using approved safety equipment (dust masks), avoiding prolonged contact, and washing exposed areas.

Power Source and Grounding

Power Source

This planer uses a 15-amp motor for 120-volt, 60-Hz AC power. Ensure your shop's wiring can handle the load. Use a separate circuit rated for at least #12 wire and protected by a 20-amp time lag fuse or circuit breaker. Use only 3-wire extension cords with 3-prong grounding plugs and receptacles. Ensure the power source matches the machine's requirements. A voltage drop can cause power loss and motor overheating.

DANGER: DO NOT expose the machine to rain or operate in damp locations.

Grounding Instructions

DANGER: This machine must be grounded while in use to protect the operator from electric shock.

The machine is equipped with an electric cord and grounding plug. Plug into a properly installed and grounded outlet according to local codes. DO NOT modify the plug. If it doesn't fit, have a qualified electrician install the correct outlet. Improper grounding can lead to electric shock. The equipment-grounding conductor is typically green or green with yellow stripes. If the cord or plug needs repair, DO NOT connect the grounding conductor to a live terminal. Consult a qualified electrician if unsure about grounding.

Use ONLY 3-wire extension cords with 3-prong grounding plugs and matching receptacles. Repair or replace damaged cords immediately.

DANGER: Always ensure the receptacle is properly grounded.

Extension Cords

DANGER: NEVER use a damaged extension cord. Check cords before each use; damaged cords can cause electrical shock.

CAUTION: Keep extension cords clear of the work area to prevent snagging.

WARNING: Use proper extension cords. Ensure they are 3-wire, grounding type, and heavy enough for the machine's current draw. Undersized cords cause voltage drop, power loss, and overheating. Consult the chart for correct wire gauge based on cord length. Only use round, jacketed cords listed by Underwriter's Laboratories (UL).

Ampere rating (on tool data label)12A-16A
Cord LengthWire Size
25'14 AWG
50'12 AWG

* Used on 12 gauge - 20 amp circuit

NOTE: AWG = American Wire Gauge

Unpacking and Cleaning

CAUTION: This machine weighs about 75 pounds. Use a helper to lift or move it.

Carefully unpack the machine and all loose items. Refer to the "REPLACING KNIVES" section to remove the cutterhead guard if necessary. Remove any rust-preventative oil from unpainted surfaces using a soft cloth moistened with mineral spirits, paint thinner, or denatured alcohol.

CAUTION: DO NOT use highly volatile solvents like gasoline, naphtha, acetone, or lacquer thinner for cleaning.

After cleaning, apply a good quality household floor paste wax to unpainted surfaces.

CAUTION: The knives in the cutterhead are very sharp. Take care when cleaning the cutterhead and replace the cutterhead guard afterward.

Package Contents

Figure 2 illustrates the planer and loose items.

  • PC1: Planer
  • PC2: Dust Collection Attachment
  • PC3: Cutterhead Height Adjusting Handle
  • PC4: Cutterhead Lock Handle
  • PC5: T-Handle Torx Wrench
  • PC6: M6 x 20mm Torx Head Screw (6)
  • PC7: 6.5mm x 16mm x 2mm T Flat Washer (4)
  • PC8: M6 Split Lock Washer (2)

Assembly

WARNING: To reduce the risk of injury, turn the unit OFF and disconnect from the power source before installing/removing accessories, adjusting, or making repairs. An accidental start-up can cause injury.

Assembly Tools Required

  • T-handle Torx wrench PC5 (Supplied)

How to Attach the Cutterhead Lock Handle

  1. Use the supplied T-handle Torx wrench (PC5) to attach the cutterhead lock handle (PC4) to shaft A using screw (PC6) and lock washer (PC8). (See Figure 3)

How to Attach the Cutterhead Height Adjusting Handle

  1. Attach the cutterhead height adjusting handle (PC3) to shaft B, ensuring the flat edge on the shaft engages the flat edge in the handle.
  2. Fasten the handle to the shaft using screw (PC6) and lock washer (PC8) with the T-handle Torx wrench (PC5).

NOTE: The cutterhead height adjusting handle has markings on the dial for accurate cuts.

Figure 4 shows this attachment.

How to Prepare for Dust Management

You have two options: the dust deflector (factory installed) or the dust collection attachment.

How to Install the Dust Collection Attachment

WARNING: Disconnect the machine from the power source.

  1. Using the cutterhead height adjusting handle, raise the main housing to allow clearance for the T-handle torx wrench.
  2. Using the supplied wrench (PC5), remove the two M6 x 20mm Torx screws and flat washers (PC6) securing the dust deflector. Save these for step 4. (See Figures 5 & 6)
  3. Remove the dust deflector (F11). (See Figure 7)
  4. Align the four slots in the dust collection attachment with the holes in the frame (Figure 8). Secure using four M6 x 20mm Torx screws and washers (PC6).
  5. Reverse the procedure to install the dust deflector, ensuring the label is up and the curved lip points down.
  6. Store the two extra mounting screws with the dust collection attachment.

CAUTION: When using the dust collection attachment, DO NOT operate the unit without a hose connected and a dust collector in operation. The attachment is designed for a 4-inch hose.

How to Fasten the Planer to a Supporting Surface

CAUTION: Before operation, secure the planer to a supporting surface using the four provided holes (two shown at A in Figure 9).

CAUTION: Operate the planer on a flat, level surface.

Four attachment holes are provided under the in-feed and out-feed tables for mounting the planer to a stand or work surface. (See Figure 9)

Operation

Operational Controls and Adjustments

How to Start and Stop the Planer

  1. To turn the planer ON, lift the paddle (F9). To turn it OFF, push the paddle down. (See Figure 10)

IMPORTANT: When not in use, lock the switch in the "OFF" position (Figure 11) with a padlock (A) with a 1/4-inch (6.3mm) shackle through the switch cover and paddle holes. (See Figure 12)

WARNING: Ensure the lock prevents the switch from being turned on.

How to Use the Cutterhead Lock

The cutterhead lock (PC4) helps eliminate snipe. Snipe can also be reduced by butting boards end-to-end and supporting long boards.

  1. To lock the cutterhead, turn the handle clockwise. To unlock, turn counterclockwise. (See Figure 13)

How to Adjust the Head Assembly

The head assembly includes the cutterhead, feed rollers, chip deflector, and motor. Raising/lowering the head assembly controls the depth of cut.

  1. Unlock the cutterhead lock handle (PC4).
  2. Turn the cutterhead height adjusting handle (PC3) clockwise to raise or counter-clockwise to lower the cutterhead. One revolution of the handle moves the cutterhead 1/16 inch (1.6mm). (See Figure 14)

How to Use the Material Removal Gauge

(See Figure 15)

The material removal gauge (A) indicates the amount of wood removed per pass. The gauge reads across the entire width of the planer head.

  1. Slide about 3 inches of the workpiece (B) under the carriage.
  2. Ensure the workpiece lies flat against the table; angled pieces yield inaccurate readings.
  3. Lower the carriage until the material removal bar engages the wood. The red arrow (A) on the scale shows the amount to be removed at the current height.
  4. Adjust carriage height until the desired depth of cut is shown on the gauge.
  5. Note this depth. You may need to back the cutterhead off the board to remove it. Pull the material out and reset the cutterhead to the desired depth.
  6. Turn the unit on and feed the material into the cutterhead.

Recommended Depth of Cut

NOTE: DO NOT exceed the recommended depth of cut for various widths of material shown below.

WARNING: DO NOT turn the unit ON with the workpiece in position.

NOTE: One revolution of the cutterhead height adjusting handle moves the cutterhead 1/16 inch (1.6mm).

For soft woods up to 6 inches (152mm) wide, a 1/8-inch (3.2mm) depth-of-cut is possible. For hard woods up to 4 inches (102mm) wide, a 1/8-inch (3.2mm) depth-of-cut is possible. (See Figure 16)

For soft wood 6 to 13 inches (152-330mm) wide, use a maximum depth-of-cut of 1/16 inch (1.6mm). For hard wood 6 to 13 inches (152-330mm) wide, use a maximum depth-of-cut of 3/64 inch (1.2mm). (See Figure 16)

IMPORTANT: A shallow depth-of-cut produces a better finish.

Recommended Depth of Cut
SOFT WOODHARD WOOD
Up to 2 inch (51mm)1/8 inch (3.2mm)3/32 inch (2.4mm)
6 inch (152mm)1/8 inch (3.2mm)1/16 inch (1.6mm)
8 inch (203mm)3/32 inch (2.4mm)
10 inch (254mm)1/16 inch (1.6mm)
4 inch (102mm)1/8 inch (3.2mm)3/32 inch (2.4mm)
7 inch (178mm)1/16 inch (1.6mm)
9 inch (229mm)3/64 inch (1.2mm)

Figure 16 shows these recommendations.

How to Use the Depth Stop

The depth stop dial (F7) allows for repetitive planing. Thicknesses from 1/8 inch to 1 1/4 inch can be selected. Detents are provided at 1/8, 1/4, 1/2, 3/4, 1, and 1 1/4 inches.

  1. Ensure the cutterhead is set above 1 1/4 inch before setting the depth stop.
  2. Unlock the dial (F7) by rotating the locking knob (B) counterclockwise.
  3. Turn the dial (F7) to the desired thickness, aligning it with the indicator line (A). (See Figure 17)
  4. Lock the gauge by turning the locking knob (B) clockwise. (See Figure 17)
  5. Plane the workpiece in desired increments until the final thickness is achieved.

NOTE: DO NOT force the carriage below the depth stop setting, as this can permanently damage the height adjustment system.

How to Use the Adjustable Indexing Ring

The cutterhead height adjusting handle has an adjustment ring (A). This ring is useful for fine adjustments after the initial cut.

  1. After the initial cut, measure the thickness of the planed board.
  2. Set the ring (A) to align zero with the arrow (B). (See Figure 18)
  3. Rotate the handle to the desired depth of cut indicated on the ring. Each indicator represents 1/128 inch (.2mm) for minute adjustments.
  4. Plane the workpiece and repeat until the final thickness is achieved.

Planing Steps and Techniques

General Steps for Best Results

  1. True One Face: Feed one face over a jointer, making thin cuts until the surface is flat.
  2. Plane to Thickness: Place the surfaced side face down and plane until flat. Then plane both sides, alternating passes, until the desired thickness is reached. If the board twists or warps, re-true one face.
  3. Support long stock at the in-feed and out-feed ends.
  4. Engage the cutterhead lock before planing. Plane with the grain ONLY. Keep the table clean and occasionally wax it to reduce friction.
  5. Cross-cut the workpiece to its final length.

NOTE: Feed the wood through different areas of the planer table to ensure even knife wear.

Proper Planing Techniques

  1. Lower the carriage to the desired height for the first pass.
  2. Turn the unit on and feed the material into the feed rollers.
  3. Examine the cut and adjust the carriage height for the next pass.
  4. Feed workpieces through alternating areas (left, middle, right) for even blade wear.

NOTE: Flip the board over between each pass.

WARNING: DO NOT turn the unit on with the workpiece under the cutterhead. Wait for the roller and cutterhead to reach full speed before feeding material.

For best results, remove material equally from both sides (e.g., 1/16 inch from each side to remove 1/8 inch total). This promotes even drying and finer cuts.

WARNING: Plane only wood free from foreign objects, loose knots, and severe warping, twisting, or bowing.

WARNING: DO NOT place your body between the planer and a stationary object while material is feeding.

Minimum/Maximum Width/Height/Depth

NOTE: ALWAYS plane in the direction of the grain and support the workpiece adequately. Planing material less than 3/4 inch wide is not recommended. Group narrow pieces together if necessary. The maximum depth of cut for material less than 6 inches wide is 1/8 inch. Do not attempt to modify the planer for deeper cuts. Follow the recommended depth/width guidelines.

Snipe

Snipe is a depression caused by an unsupported end of the material dropping. To avoid snipe, feed the workpiece level and flat against the table at all times. Support long boards.

Twisted, Cupped and Bowed Wood

For very rough, cupped, bowed, or twisted material, ideally use a jointer to create one flat surface first. If not possible:

  • To Plane Twisted Wood: If only slightly twisted, plane both sides alternating until desired thickness is reached. If a jam occurs, turn power OFF, disconnect power, and raise the cutterhead.
  • To Plane Cupped Wood: Rip the material down the middle to create two pieces. This reduces the cup severity. If ripping is not an option, plane one side until flat, then the other, starting with the cupped portion facing down. DO NOT flip the board back and forth between passes.
  • To Plane Bowed Wood: The feed rollers and cutterhead will push out the bow during feeding. However, the bow may return when the material exits. Use a jointer for proper bow removal.

Maintenance and Adjustment

WARNING: To reduce the risk of injury, turn the unit OFF and disconnect from the power source before installing/removing accessories, adjusting, or making repairs.

WARNING: Wear gloves when removing knives; they are very sharp.

WARNING: Disconnect the machine from the power source. Knives are sharp; handle with care.

How to Check, Adjust, Clean and Replace Knives

The knives are double-edged and reversible. To change knives, refer to Figures 19-22.

  1. Raise the cutter head assembly to 4 inches (102mm) on the "Scale and Pointer".
  2. Remove screws (A) and pull the dust deflector or dust collection attachment (B) straight out.
  3. Insert the supplied wrench (PC5) into the hex hole. Rotate the cutterhead until the cutterhead lock engages.
  4. Remove the seven screws (E) and use the magnetic end of the wrench to remove the hold-down bar (F).
  5. Place the magnetized end of the wrench (PC5) at the center of the knife. Lift the wrench until the knife (H) separates from the pins. Remove the knife.
  6. Repeat steps 3-5 for the other two knives. Press the cutterhead lock release and rotate the cutterhead until the lock engages for the next knife.
  7. IMPORTANT: After removing all knives, clean the cutterhead, knives, and hold-down bars with a cloth rag and isopropyl alcohol to remove gum, tar, and pitch residue. Clean under the knife area and the cutterhead radius. This prolongs planer life.
  8. Clean the rollers (I). (See Figure 23)
  9. If the second edge of a double-edged knife has not been used, rotate it 180 degrees. Replace knives if both sides have been used.
  10. Attach the hold-down bar (F) removed in STEP 4. Tighten all fasteners securely.
  11. Depress the cutterhead lock release and rotate the cutterhead to the next position until the lock engages.
  12. Repeat steps 9-11 to replace the other knives.
  13. Reattach the dust deflector or dust collection port.

How to Adjust the In-Feed and Out-Feed Tables

If snipe occurs due to loss of adjustment, you can adjust the in-feed and out-feed tables.

  1. Raise the cutter head.
  2. Place a dime (A) at each end of the Wear Table (in-feed and out-feed). (See Figure 24)
  3. Place a straight edge (B) across the two dimes, extending past the table edges. (See Figure 24)
  4. If tables are properly adjusted, the straight edge will touch both dimes and table edges.
  5. If adjustment is needed, loosen the lock nuts (D) on the height-adjustment screws (C). Adjust screws up or down to achieve the desired table height. (See Figure 25)
  6. Ensure both height-adjustment screws contact the bottom of the table after adjustment.
  7. Re-tighten lock nuts.

How to Calibrate the Depth Adjustment Scale

The depth adjustment scale (A) is factory set but may require recalibration with extended use.

  1. Plane a piece of scrap wood, noting the scale measurement.
  2. Measure the finished thickness of the workpiece (away from the ends).
  3. If the workpiece thickness does not match the scale reading, loosen the two screws (B) on the red indicator. Adjust the pointer until it matches the finished thickness. Securely re-tighten the screws. (See Figure 26)

Wear Table and In-Feed/ Out-Feed Table Maintenance

Keep tables clean and free from oil, grease, and pitch. Treat with paste wax for a smooth finish.

Circuit Breaker Reset Button

The planer has an 18-amp circuit breaker. If overloaded, turn the planer OFF, wait 2 minutes, and press the reset button (F10). (See Figure 27)

WARNING: Ensure the switch is in the "OFF" position before restoring power after a breaker trip.

NOTE: Circuit breaker overload often indicates dull knives. Change knives regularly.

Brush Change

Brush caps (C) are external to the motor. If brushes need replacement, acquire identical RIDGID® brushes from an authorized service center. (See Figure 28)

Replacing the Drive Belt

Drive belts are available from RIDGID® authorized service centers. Replacement should be performed by qualified service personnel.

Keep Machine Clean

Periodically blow out air passages with dry compressed air. Clean plastic parts with a soft, damp cloth. NEVER use solvents on plastic parts.

WARNING: Wear certified safety equipment for eye, hearing, and respiratory protection when using compressed air.

Lubrication

Apply household floor paste wax to the machine table, extension table, or other work surfaces weekly, or use a commercially available protective product.

Troubleshooting

For assistance, visit www.RIDGID.com or call RIDGID® Stationary Power Tool Technical Service at 1-888-359-4778.

Failure to Start

Check cord plug contact, reset button, fuses, or circuit breakers.

Troubleshooting Table

ProblemPossible CauseSolution
Snipe (uneven cut on end of boards)1. Dull cutterhead blades
2. Incorrect butted stock
3. Unit not mounted properly
1. Replace or flip cutterhead blades.
2. Butt pieces end to end.
3. Tighten mounting bolts.
Torn grain1. Cutterhead depth too deep
2. Workpiece fed against the grain
3. Dull cutterhead blades
1. Reduce depth of cut.
2. Feed opposite end of board first.
3. Replace or flip cutterhead blades.
Fuzzy/rough grain1. Moisture content high in workpiece
2. Dull cutterhead blades
3. Cutterhead depth too deep
4. Incorrect feeding spread
1. Ensure wood is dry.
2. Replace or flip cutterhead blades.
3. Reduce depth of cut.
4. Check power supply, cord/plug, or motor brushes.
Uneven depth of cut1. Cutterhead not level with Wear Table
2. Inconsistent pressure from rollers
3. Rollers have uneven wear
1. Adjust elevation nuts.
2-3. Contact local authorized Service Center.
Board thickness does not match depth scale indicator1. Depth scale incorrect
2. Tables dirty
1. Adjust depth scale.
2. Clean and wax tables.
Cutterhead height difficult to adjust1. Dirty spindle
2. Worn chain
1. Clean and lubricate spindle.
2. Contact local authorized Service Center.
Will not start1. Not plugged in
2. Blown circuit
3. Motor Failure
4. Loose wire
5. On/Off switch not working
6. Motor overload
1. Check power source.
2. Replace fuse, reset breaker, or contact electrician.
3-6. Contact local authorized Service Center.
Interrupted operation1. Unit overloaded
2. Circuit overloaded
1. Reduce load.
2. Operate on an independent circuit.

Accessories

A complete line of accessories is available from RIDGID® suppliers and service centers. Visit www.RIDGID.com for a catalog.

WARNING: Use of accessories not offered by RIDGID® can be hazardous. For safety, use only RIDGID® recommended accessories.

Parts, Service or Warranty Assistance

RIDGID® Stationary Power Tool 5 Year Limited Service Warranty

Proof of purchase is required for warranty service. This warranty applies to RIDGID® stationary power tools purchased on or after 2/1/21. The product is manufactured by DPEC. All warranty communications should be directed to RIDGID® Stationary Power Tool Technical Service at 1-888-359-4778.

90-Day Satisfaction Guarantee Policy

Within 90 days of purchase, return the tool to the dealer for a full refund or exchange if dissatisfied with performance. Present proof of purchase and original packaging for replacement tools. The replacement tool is covered for the balance of the 5-year warranty.

What is Covered Under the 5 Year Limited Service Warranty

This warranty covers all defects in workmanship or materials for five years from the purchase date. Warranties for other RIDGID® products may vary.

How to Obtain Service

Call RIDGID® Customer Service at 1-888-359-4778 or email RidgidWoodworking@ridgidproducts.com. Provide the original dated sales receipt. The authorized service center will repair or replace any covered part at no charge.

What is Not Covered

This warranty applies only to the original retail purchaser and is non-transferable. It covers normal usage defects and does not cover malfunctions due to misuse, abuse, neglect, alteration, modification, or repair by unauthorized centers. Consumable accessories (blades, bits, sandpaper) are not covered.

RIDGID® makes no warranties, representations, or promises regarding the quality or performance of its power tools other than those stated in this warranty.

Additional Limitations

Implied warranties (merchantability, fitness for a particular purpose) are disclaimed to the extent permitted by law, or limited to five years if they cannot be disclaimed. RIDGID® is not responsible for direct, indirect, incidental, or consequential damages. Some states may not allow these limitations.

This warranty grants specific legal rights, and you may have other rights that vary by state.

DPEC
2651 New Cut Road
Spartanburg, SC 29303

©2021

RIDGID® is a registered trademark and used under license.

Models: R4850, 13 inch Portable Thickness Planer with 3 Blade Cutterhead

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References

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