RIDGID R86042 18 VOLT 4-1-2 Inch Brushless Angle Grinder User Manual

R86042 18 VOLT 4-1-2 Inch Brushless Angle Grinder
User Manual

OPERATOR’S MANUAL
18 VOLT 4-1/2 in. BRUSHLESS ANGLE GRINDER
115 mm (4-1/2 po) MEULEUSE D’ANGLE SANS BALAI DE 18 V
115 mm (4-1/2 plug.) AMALADORA ANGULAR SIN ESCOBILLAS DE 18 V
R86042

To register your RIDGID product, please visit: register.ridgidpower.com
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

GENERAL POWER TOOL SAFETY WARNINGS

WARNING
Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
WORK AREA SAFETY

• Keep the work area clean and well-lit. Cluttered or dark areas invite accidents.
• Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite dust or fumes.
• Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.

ELECTRICAL SAFETY

• Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce the risk of electric shock.
• Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
• Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
• Do not abuse the cord. Never use the cord for carrying, pulling, or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
• When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
• If operating a power tool in a damp location is unavoidable, use a ground fault circuit interrupter (GFCI) protected supply. Use of a GFCI reduces the risk of electric shock.
• Use this product only with batteries and chargers listed in tool/appliance/battery pack/charger correlation supplement 988000-302.

PERSONAL SAFETY

• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating power tools may result in serious personal injury.
• Use personal protective equipment. Always wear eye protection. Protective equipment such as dust masks, non-skid safety shoes, hard hats, or hearing protection used for appropriate conditions will reduce personal injuries.
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to a power source and/or battery pack, picking up or carrying the tool. Carrying power tools with your finger on the switch or energizing power tools that have the switch on invites accidents.
• Remove any adjusting key or wrench before turning the power tool on. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool in unexpected situations.
• Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing, and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving parts.
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. The use of dust collection can reduce dust-related hazards.
• Do not wear loose clothing or jewelry. Contain long hair. Loose clothes, jewelry, or long hair can be drawn into air vents.
• Do not use on a ladder or on unstable support. Stable footing on a solid surface enables better control of the power tool in unexpected situations.

POWER TOOL USE AND CARE

• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools. Such preventive safety measures reduce the risk of starting the power tool accidentally.
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool. Power tools are dangerous in the hands of untrained users.
• Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.
• Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed. Use of the power tool for operations different from those intended could result in a hazardous situation.

BATTERY TOOL USE AND CARE

• Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
• Use power tools only with specifically designated battery packs. The use of any other battery packs may create a risk of injury and fire.
• When the battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
• Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.

SERVICE

• Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
• When servicing a power 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 shock or injury.

ANGLE GRINDER SAFETY WARNINGS

SAFETY WARNINGS COMMON FOR GRINDING, SANDING, WIRE BRUSHING AND POLISHING OPERATIONS

• This power tool is intended to function as a grinder, sander, wire brush, or polisher. Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
• Operations such as cutting-off are not recommended to be performed with this power tool. Operations for which the power tool was not designed may create a hazard and cause personal injury.
• Do not use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.
• The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fly apart.
• The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
• Threaded mounting of accessories must match the grinder spindle thread. For accessories mounted by flanges, the arbor hole of the accessory must fit the locating diameter of the flange. Accessories that do not match the mounting hardware of the power tool will run out of balance, vibrate excessively, and may cause loss of control.
• Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, backing pad for cracks, tears or excess wear, and wire brush for loose or cracked wires. If a power tool or accessory is dropped, inspect for damage or install an undamaged accessory. After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this test time.
• Wear personal protective equipment. Depending on the application, use a face shield, safety goggles, or safety glasses. As appropriate, wear a dust mask, hearing protectors, gloves and a workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtrating particles generated by your operation. Prolonged exposure to high-intensity noise may cause hearing loss.
• Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpiece or of a broken accessory may fly away and cause injury beyond immediate area of operation.
• Hold the power tool by insulated gripping surfaces only, when performing an operation where the cutting tool may contact hidden wiring. Contact with a “live” wire will also make exposed metal parts of the power tool “live” and could give the operator an electric shock.”
• Never lay the power tool down until the accessory has come to a complete stop. The spinning accessory may grab the surface and pull the power tool out of your control.
• Do not run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
• Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
• Do not operate the power tool near flammable materials. Sparks could ignite these materials.
• Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.

KICKBACK AND RELATED WARNINGS
Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on the direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions.
Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.

• Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. Always use an auxiliary handle, if provided, for maximum control over kickback or torque reaction during startup. The operator can control torque reactions or kickback forces if proper precautions are taken.
• Never place your hand near the rotating accessory. The accessory may kick back over your hand.
• Do not position your body in the area where the power tool will move if kickback occurs. Kickback will propel the tool in a direction opposite to the wheel’s movement at the point of snagging.
• Use special care when working corners, and sharp edges. etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
• Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control.

SAFETY WARNINGS SPECIFIC FOR GRINDING OPERATIONS

• Use only wheel types that are recommended for your power tool and the specific guard designed for the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded and are unsafe.
• The grinding surface of center depressed wheels must be mounted below the plane of the guard lip. An improperly mounted wheel that projects through the plane of the guard lip cannot be adequately protected.
• The guard must be securely attached to the power tool and positioned for maximum safety, so the least amount of wheel is exposed to the operator. The guard helps to protect the operator from broken wheel fragments, accidental contact with the wheel, and sparks that could ignite clothing.
• Wheels must be used only for recommended applications. For example: do not grind with the side of the cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding, side forces applied to these wheels may cause them to shatter.
• Always use undamaged wheel flanges that are of the correct size and shape for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. Flanges for cut-off wheels may be different from grinding wheel flanges.
• Do not use worn-down wheels from larger power tools. Wheel intended for a larger power tool is not suitable for the higher speed of a smaller tool and may burst.

SAFETY WARNINGS SPECIFIC FOR SANDING OPERATIONS

• Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations, when selecting sanding paper. Larger sanding paper extending beyond the sanding pad presents a laceration hazard and may cause snagging, tearing of the disc or kickback.

SAFETY WARNINGS SPECIFIC FOR POLISHING OPERATIONS

• Do not allow any loose portion of the polishing bonnet or its attachment strings to spin freely. Tuck away or trim any loose attachment strings. Loose and spinning attachment strings can entangle your fingers or snag on the workpiece.

SAFETY WARNINGS SPECIFIC FOR WIRE BRUSH OPERATIONS

• Be aware that wire bristles are thrown by the brush even during ordinary operations. Do not overstress the wires by applying excessive load to the brush. The wire bristles can easily penetrate light clothing and/or skin.
• If the use of a guard is recommended for wire brushing, do not allow any interference of the wire wheel or brush with the guard. Wire wheel or brush may expand in diameter due to workload and centrifugal forces.

ADDITIONAL SAFETY RULES

• Always use proper guard with grinding wheel. A guard protects the operator from broken wheel fragments.
• Know your power tool. Read the operator’s manual carefully. Learn its applications and limitations, as well as the specific potential hazards related to this powerful tool.
  Following this rule will reduce the risk of electric shock, fire, or serious injury.
• Always wear eye protection with side shields marked to comply with ANSI Z87.1. Following this rule will reduce the risk of serious personal injury.
• Protect your lungs. Wear a face or dust mask if the operation is dusty. Following this rule will reduce the risk of serious personal injury.
• Protect your hearing. Wear hearing protection during extended periods of operation. Following this rule will reduce the risk of serious personal injury.
• Battery tools do not have to be plugged into an electrical outlet; therefore, they are always in operating condition. Be aware of possible hazards when not using your battery tool or when changing accessories. Following this rule will reduce the risk of electric shock, fire, or serious personal injury.
• Do not place battery tools or their batteries near fire or heat. This will reduce the risk of explosion and possibly injury.
• Do not crush, drop or damage the battery pack. Do not use a battery pack or charger that has been dropped or received a sharp blow. A damaged battery is subject to explosion. Properly dispose of a dropped or damaged battery immediately.
• Batteries can explode in the presence of a source of ignition, such as a pilot light. To reduce the risk of serious personal injury, never use any cordless product in the presence of an open flame. An exploded battery can propel debris and chemicals. If exposed, flush with water immediately.
• Do not charge the battery tool in a damp or wet location. Do not use, store, or charge battery packs or products in locations where the temperature is less than 50°F or more than 100°F. Do not store outside or in vehicles.
• Under extreme usage or temperature conditions, battery leakage may occur. If liquid comes in contact with your skin, wash immediately with soap and water. If liquid gets into your eyes, flush them with clean water for at least 10 minutes, then seek immediate medical attention. Following this rule will reduce the risk of serious personal injury.
• Save these instructions. Refer to them frequently and use them to instruct others who may use this tool. If you loan someone this tool, loan them these instructions also.

SYMBOLS

The following signal words and meanings are intended to explain the levels of risk associated with this product.

SYMBOL	SIGNAL	MEANING
	DANGER:	Indicates a hazardous situation, which, if not avoided, will result in death or serious Injury.
	WARNING:	Indicates a hazardous situation, which, if not avoided, could result in death or serious injury.
	CAUTION:	Indicates a hazardous situation, that, if not avoided, may result in minor or moderate injury.
	NOTICE:	(Without Safety Alert Symbol) Indicates information considered important, but not related to a potential injury (e.g. messages relating to property damage).

Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the product better and safer.

SYMBOL	NAME	DESIGNATION/EXPLANATION
	Safety Alert	Indicates a potential personal injury hazard.
	Read Operator’s Manual	To reduce the risk of injury, users must read and understand the operator’s manual before using this product.
	Eye Protection	Always wear eye protection with side shields marked to comply with ANSI Z87.1.
	Eye and Hearing Protection	Always wear eye protection with side shields marked to comply with ANSI Z87.1 as well as hearing protection when operating this equipment.
	Wet Conditions Alert	Do not expose to rain or use in damp locations.
	Recycle Symbol	This product uses lithium-ion (Li-ion) batteries. Local, state or federal laws may prohibit the disposal of batteries in ordinary trash. Consult your local waste authority for information regarding available recycling and/ or disposal options.
V	Volts	Voltage
min	Minutes	Time
	Direct Current	Type or a characteristic of current
n	Rated Speed	Maximum rotational speed
…/min	Per Minute	Revolutions, strokes, surface speed, orbits etc., per minute

FEATURES

PRODUCT SPECIFICATIONS
Grinding Wheel Capacity………………………………….4-1/2 in.
Recommended Grinding Wheel Thickness …………………………….. Type 27, 6 mm
Rated Speed ………………………………………. 10,600/min
Spindle Thread ………………………………….. 5/8 in. x 11 UNC

ASSEMBLY

UNPACKING
This product requires assembly. Carefully remove the tool and any accessories from the box. All items listed in the Includes section must be included at the time of purchase.
WARNING:
Items in this Assembly section are not assembled to the product by the manufacturer and require custom installation. Use of a product that may have been improperly assembled could result in serious personal injury.

• Inspect the tool carefully to make sure no breakage or damage occurred during shipping.
• Do not discard the packing material until you have carefully inspected and satisfactorily operated the tool.
• If any parts are damaged or missing, please call 1-866-539-1710 for assistance.

WARNING:
If any parts are damaged or missing do not operate this product until the parts are replaced. Use of this product with damaged or missing parts could result in serious personal injury.
WARNING:
Do not attempt to modify this product or create accessories not recommended for use with this product. Any such alteration or modification is misuse and could result in a hazardous condition leading to possible serious personal injury.
WARNING: 
To prevent accidental starting that could cause serious personal injury, always remove the battery pack from the product when assembling parts.

INSTALLING GRINDING WHEEL

See Figure 1, page 12.

DANGER:
Use ONLY Type 27 depressed center grinding wheels (such as the one provided with this product). NEVER attach a Type 1 straight or cutoff wheel to this angle grinder. Use for any other purpose is not recommended and creates a hazard, which will result in serious injury.

DANGER:
Never attach a wood cutting or carving blade of any type to this grinder. It is only designed for grinding and sanding. Use for any other purpose is not recommended and creates a hazard, which will result in serious injury.
NOTE: Make sure that the minimum operating speed of any accessory wheel selected is equal to or greater than the rated speed of the tool.
WARNING:
Thoroughly inspect a new grinding wheel before you install it on the grinder.

• Tap lightly around the wheel using a wooden hammer.
• Listen carefully to the resulting sounds. Places with fissures or cracks will result in a different sound.

Do not use a wheel containing fissures or cracks. When you install a new grinding wheel, carry out a no-load revolution test of approximately one minute with the grinding wheel facing a safe direction, i.e., away from people or objects.

• Remove the battery pack from the grinder.
• Depress the spindle lock button and rotate the clamp nut until the spindle locks.

NOTICE:
To prevent damage to the spindle or spindle lock, always allow the motor to come to a complete stop before engaging the spindle lock.

• Loosen and remove the clamp nut from the spindle. Do not remove the disc flange.
• Make sure the flats on the bottom of the disc flange are engaged with the flats on the spindle.
• Place the grinding wheel over the spindle.

WARNING:
Always install a grinding wheel with the depressed center against the disc flange. Failure to do so will cause the grinding wheel to crack when tightening the clamp nut. This could result in serious personal injury because of loose particles breaking off and being thrown from the grinder. Do not overtighten.

• Thread the clamp nut on the spindle with the flat side of the nut facing up.
• Fit the raised, small-diameter portion of the clamp nut into the hole in the wheel and finger tighten.
• Depress the spindle lock button and rotate the wheel clockwise until the spindle locks in position.
• Tighten the clamp nut securely with the wrench provided. Do not overtighten.

WARNING:
Always check that the spindle lock button is fully released before switching on the tool.
INSTALLING THE SIDE HANDLE
See Figure 2, page 12.
WARNING:
The side handle must always be used to help prevent loss of control and possible serious injury.
The side handle can be installed on the top, left, or right side of the grinder, depending on operator preference. Insert the side handle into the desired operating position. Turn the side handle clockwise to securely tighten.

OPERATION

WARNING:
Do not allow familiarity with this product to make you careless. Remember that a careless fraction of a second is sufficient to inflict serious injury.
WARNING:
Always wear eye protection with side shields marked to comply with ANSI Z87.1, along with hearing protection. Failure to do so could result in objects being thrown into your eyes and other possible serious injuries.
WARNING:
Do not use any attachments or accessories not recommended by the manufacturer of this product. The use of attachments or accessories not recommended can result in serious personal injury.

APPLICATIONS

You may use this product for the purpose listed below:

• Grinding metals
• Sanding wood or metal surfaces (sanding disc and pad not included)
• Wire brushing metal surfaces (wire wheel not included)
• Polishing metal surfaces (pad and bonnet not included)

WARNING:
Battery products are always in operating condition. Therefore, the on/off switch should always be in the OFF position when not in use or carrying at your side.

INSTALLING/REMOVING BATTERY PACK

See Figure 3, page 12.
To install:

• Place the on/off switch in the OFF position.
  NOTE: If the on/off switch is in the ON position when the battery is installed, the lock-off feature will prevent the tool from starting. If this occurs, turn the tool off and back on to begin use.
• Insert the battery pack.
• Make sure the latches on each side of the battery pack snap into place and the battery pack is secured in the product before beginning operation.

To remove:

• Depress the latches on each side of the battery pack.
• For complete charging instructions, see the operator’s manuals for your battery pack and charger.

OVERLOAD PROTECTION
When the tool is forced or the motor is overloaded, the grinder will automatically shut off. Do not force the tool. The overload protection LED will flash when the grinder nears overload condition. To avoid overload, apply less pressure on the grinder or turn the tool off, then restart and resume operation.
POSITIONING THE GUARD
See Figures 4 – 6, pages 12 – 13 and figure 9, page 14. The guard on the grinder should be correctly positioned depending on which side the handle is mounted. Never use the grinder without the guard correctly in place or when the index arrows are aligned.
WARNING:
Never place the guard so that it is in front of the grinder. This could result in serious injury because sparks and loose particles thrown from the grinding wheel would be directed toward the operator. Always place the guard in the correct location as shown.
To reposition the guard:
Remove the battery pack. Depress guard lever and rotate the guard to its correct position as shown.
NOTE: Be sure the raised ridge on the guard is seated in the groove on the bearing cap. Never use the grinder without the guard in place and properly adjusted.
STARTING/STOPPING THE GRINDER
See Figure 7, page 13.
WARNING:
Always check that the spindle lock button is fully released before switching on the tool.
Hold the grinder in front and away from you, keeping the grinding wheel clear of the workpiece.
To turn the angle grinder on, push the on/off switch forward to the ON position. To lock the grinder in the ON position, depress the front of the switch.
To stop the grinder, release the on/off switch to the OFF position. If the switch is in the locked position, depress the rear of the switch to release to the OFF position.
NOTICE:
Never cover air vents. They must always be open for proper motor cooling.

OPERATING THE GRINDER
See Figure 8, page 13. Always carefully select and use grinding wheels that are recommended for the material to be ground. Make sure that the minimum operating speed of any accessory wheel selected is 10,600 /min. or more. The grinding wheel provided with the grinder is suitable for grinding welds, preparing surfaces to be welded, grinding structural steel, and grinding stainless steel. To operate the grinder: Secure all work in a vise or clamp to a workbench.
DANGER:
Never use the grinder with the guard removed. It has been designed for use only with the guard installed. Attempting to use grinder with guard removed will result in loose particles being thrown against the operator resulting in serious personal injury.

• Hold the grinder in front and away from you with both hands, keeping the grinding wheel clear of the workpiece.
• Turn on the grinder and let the motor and grinding wheel build up to full speed.
• Lower the grinder gradually until the grinding wheel contacts the workpiece.
• Keep the grinder tilted at an angle from 5 to 15 degrees from the work surface.

WARNING:
To prevent loss of control and possible serious personal injury, always operate the grinder with both hands, keeping one hand on the side handle.
Move the grinder continuously at a steady, consistent pace.
NOTICE:
If the grinder is held in one spot too long, it will gouge and cut grooves in the workpiece. If the grinder is held at too sharp an angle, it will also gouge the workpiece because of concentration of pressure on a small area.
NOTE: Heavy pressure will decrease the grinder’s speed and put a strain on the motor. Normally the weight of the tool alone is adequate for most grinding jobs.

• Use light pressure when grinding jagged edges or loose bolts where there is the potential for the grinder to snag on the metal edge.
• Use just enough pressure to keep the grinder from chattering or bouncing.
• When too much pressure is applied and not relieved, an overload condition may result, causing the tool to automatically shut off. Lift the grinder away from the workpiece before turning off the grinder.

MAINTENANCE

WARNING:
When servicing, use only identical replacement parts. Use of any other part could create a hazard or cause product damage.
WARNING:
Always wear eye protection with side shields marked to comply with ANSI Z87.1, along with hearing protection. Failure to do so could result in objects being thrown into your eyes and other possible serious injuries.
WARNING:
To avoid serious personal injury, always remove the battery pack from the tool when cleaning, performing any maintenance, or when storing the tool.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and can be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-based products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which could result in serious personal injury.
REPLACING THE GUARD
See Figure 9, page 14.
After extended use, the guard may wear and need replacing. If you drop the grinder and damage the guard it may also be necessary for you to replace it.
To replace the guard:

• Remove the battery pack from the grinder. Remove the clamp nut, grinding wheel, and disc flange.
• Refer to Installing Grinding Wheel earlier in this manual.
• Depress guard lever and rotate the old guard until the index arrows on the guard and bearing cap are aligned. Remove the old guard.
• Place the new guard on the shoulder of the bearing cap by aligning index arrows on guard and bearing cap. Press down on guard until it is fully seated.
• Depress the guard lever and rotate guard to the correct position. Refer to Positioning the Guard.
  NOTE: Be sure the raised ridge on the guard is seated in the groove on the bearing cap.
• Install disc flange, grinding wheel, and clamp nut. Refer to Installing Grinding Wheel.
• Tighten clamp nut securely with the wrench provided.

NOTE: ILLUSTRATIONS START ON PAGE 12 AFTER FRENCH AND SPANISH LANGUAGE SECTIONS.
This product has a 90-Day Satisfaction Guarantee Policy, as well as a Three-year Limited Warranty. For Warranty and Policy details,
please go to powertools.ridgid.com or call (toll free) 1-866-539-1710.
A – On/Off switch
B – Wrench
C – Spindle lock button
D – Toolless guard
E – Grinding wheel
F – Side handle
G – Guard lever
H – Overload protection LED A – Wrench
B – Clamp nut
C – Grinding wheel
D – Disc flange
E – Spindle
F – Spindle lock button
G – Flats
H – To loosen
I – To tighten 

A – Side handle A – Battery pack
B – Depress latches to release battery pack

A – Depress guard lever to rotate

Fig. 5 SIDE HANDLE ONLEFT SIDE OF GRINDER

SIDE HANDLE ON RIGHT SIDE OF GRINDER

Fig. 6 INCORRECT

A – On/Off switch
B – On position
C – Off position
D – Locked position 

A – Wrench B – Clamp nut C – Grinding wheel D – Toolless guard E – Spindle lock button F – Bearing cap G – Spindle H – To loosen

I – To tighten J – Disc flange K – Flats L – Depress guard lever to rotate M – Groove N – Raised ridge O – Index arrows

OPERATOR’S MANUAL
MANUEL D’UTILISATION MANUAL DEL OPERADOR
18 VOLT 4-1/2 in. BRUSHLESS ANGLE GRINDER
115 mm (4-1/2 po) MEULEUSE D’ANGLE SANS BALAI DE 18 V 115 mm (4-1/2 pulg.) AMALADORA ANGULAR SIN ESCOBILLAS DE 18 V R86042

Customer Service Information:
For parts or service, do not return this product to the store. 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 powertools.ridgid.com.
MODEL NO.* ____________________
SERIAL NO._______________________________
*Model number on product may have additional letters at the end. These letters designate manufacturing information and should be provided when calling for service.

ONE WORLD TECHNOLOGIES, INC.
P.O. Box 1427 Anderson, SC 29622 USA 1-866-539-1710 powertools.ridgid.com
RIDGID is a registered trademark of RIDGID, Inc., used under license.
995000620 6-3-21 (REV:05)

Documents / Resources

RIDGID R86042 18 VOLT 4-1-2 Inch Brushless Angle Grinder [pdf] User Manual R86042 18V 4-1-2 Inch Brushless Angle Grinder, R86042, 18V 4-1-2 Inch Brushless Angle Grinder

References

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• User Manual