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Ryobi P420 Operator's Manual

Angle grinder 4-1/2 in., 18 v
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Your angle grinder has been engineered and manufactured to our high standard for dependability, ease of operation, and
operator safety. When properly cared for, it will give you 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.
Thank you for your purchase.
SAVE THIS MANUAL FOR FUTURE REFERENCE
OPERATOR'S MANUAL
ANGLE GRINDER
4-1/2 in., 18 V
P420

BATTERIES AND CHARGERS

SOLD SEPARATELY

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  Summary of Contents for Ryobi P420

  • Page 1: Batteries And Chargers

    Your angle grinder has been engineered and manufactured to our high standard for dependability, ease of operation, and operator safety. When properly cared for, it will give you 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.
  • Page 2: Table Of Contents

    WHAT THIS WARRANTY COVERS: This warranty covers all defects in workmanship or materials in your RYOBI tool for a period of two years from the date of purchase. With the exception of batteries, power tool accessories are warranted for ninety (90) days.
  • Page 3: General Safety Rules

    Use of any other batteries may create a risk of fire.  Use battery only with charger listed. MODEL BATTERY PACK (P100) CHARGER (P110) P420 130255004 or 130224028 PERSONAL SAFETY  Stay alert, watch what you are doing and use common sense when operating a power tool.
  • Page 4: Specific Safety Rules

    SERVICE  Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel may result in a risk of injury.  Always use proper guard with grinding wheel. A guard protects operator from broken wheel fragments. ...
  • Page 5: Safety Rules For Charger

    SAFETY RULES FOR CHARGER WARNING! READ AND UNDERSTAND ALL INSTRUCTIONS. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.  Before using battery charger, read all instructions and cautionary markings in this manual, on battery charger, battery, and product using battery to prevent misuse of the products and possible injury or damage.
  • Page 6: Symbols

    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 Volts Amperes Hertz Watt Minutes Alternating Current Direct Current No Load Speed...
  • Page 7: Symbols

    To avoid serious personal injury, do not attempt to use this product until you read thoroughly and understand completely the operator’s manual. If you do not understand the warnings and instructions in the operator’s manual, do not use this product. Call Ryobi customer service for assistance.
  • Page 8: Features

    PRODUCT SPECIFICATIONS Grinding Wheel Capacity ...4-1/2 in. Motor ... 18 Volt DC No Load Speed ... 6,500 r/min. (RPM) SWITCH TRIGGER SPINDLE LOCK TOOLLESS GUARD DISC FLANGE FEATURES Spindle Thread ... 5/8 x 11 UNC Charger Input ... 120 V, 60 Hz, AC only Charge Rate ...1 hour LOCK-OFF BUTTON SIDE HANDLE...
  • Page 9: Assembly

    Your grinder is equipped with a lock-off button which reduces the possibility of accidental starting. ROTATING FOOT The foot of the grinder can be rotated up to 270° to the left for easier access to hard to reach areas. Stops are located at 90°, 180°, and 270°.
  • Page 10: Operation

     Insert the side handle into the desired operating position. NOTE: The handle can be installed on the top, left, or right side of the grinder, depending on operator preference. The handle must always be used to prevent loss of control and possible serious injury.
  • Page 11 CHARGING A COOL BATTERY PACK If battery pack is within normal temperature range, the red LED on charger will come on. NOTE: If the charger does not charge the battery pack under normal circumstances, return both the battery pack and charger to your nearest Authorized Service Center for electrical check.
  • Page 12 The lock resets each time the trigger is released. SWITCH TRIGGER See Figure 5. To turn the grinder ON, depress and hold lock-off button, then depress the switch trigger. To turn it OFF, release the switch trigger. OPERATION...
  • Page 13: Installing Grinding Wheel

    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.
  • Page 14 ROTATING FOOT See Figure 11. The foot of the grinder can be rotated up to 270° to the left for easier access to hard to reach areas. Stops are located at 90°, 180°, and 270°.
  • Page 15: Operation

     Move the grinder continuously at a steady, consistent pace. CAUTION: 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.
  • Page 16: Maintenance

    WARNING: When servicing, use only identical replacement parts. Use of any other parts may create a hazard or cause product damage. WARNING: Always wear safety goggles or safety glasses with side shields during power product operation or when blowing dust. If operation is dusty, also wear a dust mask. WARNING: To avoid serious personal injury, always remove the battery pack from the product when cleaning or...
  • Page 17 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: ...
  • Page 18 • HOW TO ORDER REPAIR PARTS When ordering repair parts, always give the following information: • MODEL NUMBER • SERIAL NUMBER Ryobi is a registered trademark of Ryobi Limited used under license. ® 983000-984 8-07-07 (REV:04) OPERATOR’S MANUAL 4-1/2 in., 18 VOLT ANGLE GRINDER...