OPERATOR'S MANUAL 4 in. (100 mm) Angle Grinder Model AG400 / Double Insulated SPECIFICATIONS: Grinding Wheel Capacity Rating 4 in. (100 mm) 120 volts, 60Hz, AC only No Load Speed 11,000 RPM Amperes 4.3 Amperes Net Weight 4.0 lbs. (1.8 kg.) THANK YOU FOR BUYING A RYOBI ANGLE GRINDER. Your new angle grinder has been engineered and manufactured to Ryobi's high standard for dependability, ease of operation, and operator safety.
TABLE OF CONTENTS ■ Product Specifications .................................................................................................................................. 1 ■ Table of Contents and Typical Application ................................................................................................... 2 ■ Rules for Safe Operaton ............................................................................................................................ 3-6 ■ Symbols .........................
RULES FOR SAFE OPERATION The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the explanations with them, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any danger. The instructions or warnings they give are not substitutes for proper accident prevention measures. SYMBOL MEANING SAFETY ALERT SYMBOL: Indicates danger, warning, or caution. May be used in conjunction with other symbols or pictographs.
RULES FOR SAFE OPERATION WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury. SAVE THESE INSTRUCTIONS Work Area ■ ■ ■ Keep your work area clean and well lit. Cluttered benches and 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 the dust or fumes.
RULES FOR SAFE OPERATION ■ Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one tool, may become hazardous when used on another tool. Service ■ Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel could result in a risk of injury. ■ When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual.
RULES FOR SAFE OPERATION ■ Inspect for and remove all foreign objects from workpiece before grinding. Following this rule will reduce the risk of serious personal injury. ■ Drugs, Alcohol, Medication. Do not operate tool while under the influence of drugs, alcohol, or any medication. Following this rule will reduce the risk of electric shock, fire, or serious injury. ■ Keep hands away from grinding area. Following this rule will reduce the risk of serious personal injury. ■ Save these instructions.
ELECTRICAL EXTENSION CORDS ELECTRICAL CONNECTION When using a power tool at a considerable distance from the power source, use an extension cord heavy enough to carry the current that the tool will draw. An undersized extension cord will cause a drop in line voltage, resulting in a loss of power and causing the motor to overheat. Use the chart provided below to determine the minimum wire size required in an extension cord. Only round jacketed cords listed by Underwriter's Laboratories (UL) should be used.
FEATURES KNOW YOUR ANGLE GRINDER Before attempting to use your grinder, familiarize yourself with all operating features and safety requirements. See Figure 1. Make sure all grinding wheels and recommended accessories are in accordance with listed specifications for this tool. For example, do not use grinding wheels that are rated at less than 11,000 RPM. Side Handle The side handle provided, stabilizes your grinder and must be used during all grinding operations.
ASSEMBLY WARNING: Your grinder should never be connected to power supply when you are assembling parts, making adjustments, installing or removing grinding wheels, or when not in use. Disconnecting your grinder will prevent accidental starting that could cause serious injury. GEAR HOUSING INSTALLING THE SIDE HANDLE See Figure 2. ■ UNPLUG YOUR GRINDER. WARNING: SIDE HANDLE Failure to unplug your grinder could result in accidental starting causing serious injury. Fig.
ADJUSTMENTS A WARNING: Before connecting your grinder to power supply, always check to be sure switch is not in lock-on position. Failure to do so could result in accidental starting of your grinder resulting in possible serious injury. GUARD LOCATION The guard on your grinder should be correctly installed depending on which side the handle is mounted. Never use your grinder without the guard correctly in place. Figures 4, 5, and 6 show correct and incorrect locations of the guard.
OPERATION CAUTION: (O) OFF Never cover air vents. They must always be open for proper motor cooling. (I) ON 0 SWITCH BUTTON See Figure 7. To turn your grinder on, push the switch button forward. Release the button to turn the grinder off. SWITCH BUTTON LOCK-ON FEATURE OFF See Figure 7. Your grinder has a lock-on feature that is convenient when continuous operation for extended periods of time is required.
MAINTENANCE WARNING: When servicing use only identical Ryobi replacement parts. Use of any other parts may create a hazard or cause product damage. GUARD REPLACEMENT See Figure 9. After extended use, the guard may become worn and need adjustments or replacing. If you drop your grinder and damage the guard it may also be necessary for you to replace it. PROCEED AS FOLLOWS WHEN REPLACEMENT IS REQUIRED: TO TIGHTEN TO LOOSEN ■ UNPLUG YOUR GRINDER.
MAINTENANCE GENERAL Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, carbon dust, etc. WARNING: 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.
OPERATOR'S MANUAL 4 in. (100 mm) Angle Grinder Model AG400 / Double Insulated EXTENSION CORD CAUTION When using a power tool at a considerable distance from a power source, be sure to use an extension cord that has the capacity to handle the current the tool will draw. An undersized cord will cause a drop in line voltage, resulting in overheating and loss of power. Use the chart to determine the minimum wire size required in an extension cord. Only round jacketed cords should be used.
