OPERATOR’S MANUAL BENCH GRINDER BGH616 and BGH827 Your bench 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.
TABLE OF CONTENTS n n n n n n n n n n n n n n Table of Contents ............................................................................................................................................................. 2 Warranty ........................................................................................................................................................................... 2 Introduction ...........................................................................................
GENERAL SAFETY RULES n ALWAYS WEAR SAFETY GLASSES WITH SIDE SHIELDS. Everyday eyeglasses have only impactresistant lenses, they are NOT safety glasses. WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury. n SECURE WORK. Use clamps or a vise to hold work when practical. It’s safer than using your hand and frees both hands to operate tool. READ ALL INSTRUCTIONS n DON’T OVERREACH.
GENERAL SAFETY RULES n INSPECT TOOL CORDS PERIODICALLY. If damaged, have repaired by a qualified service technician at an authorized service facility. The conductor with insulation having an outer surface that is green with or without yellow stripes is the equipment-grounding conductor. If repair or replacement of the electric cord or plug is necessary, do not connect the equipment-grounding conductor to a live terminal. Repair or replace a damaged or worn cord immediately.
SPECIFIC SAFETY RULES n INSPECT GRINDING WHEEL for visible defects. Check the wheel for fissures and cracks, and test for normal operation prior to use. Replace cracked wheel immediately. n ADJUST distance between wheel and work rest to maintain 1/16 in. or less separation as the diameter of the wheel decreases with use. The value of separation used in the marking is to be the separation recommended by the manufacturer but shall not be more than 1/8 in.
SYMBOLS Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
SYMBOLS The following signal words and meanings are intended to explain the levels of risk associated with this product. SYMBOL SIGNAL MEANING 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.
ELECTRICAL EXTENSION CORDS SPEED AND WIRING Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool's plug. 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.
FEATURES PRODUCT SPECIFICATIONS-MODEL BGH616 PRODUCT SPECIFICATIONS-MODEL BGH827 Wheel Diameter ........................................................... 6 in. Wheel Diameter ........................................................... 8 in. Wheel Thickness ...................................................... 3/4 in. Wheel Thickness ......................................................... 1 in. Arbor Hole ................................................................ 1/2 in. Arbor Hole ........
TOOLS NEEDED The following tools (not included) are needed for checking adjustments of your saw or for installing the blade: COMBINATION WRENCH (3) 7 MM, 10 MM, AND 12 MM PHILLIPS SCREWDRIVER ADJUSTABLE WRENCH Fig. 3 LOOSE PARTS LOCK WASHER WASHER SAFETY SHIELD (LEFT) WORK REST (RIGHT) WHEEL DRESSING TOOL (MODEL BGH827 ONLY) The following items are included with your Bench Grinder: n Shield Bracket – one left, one right .............................
ASSEMBLY UNPACKING MOUNTING SAFETY SHIELD ASSEMBLY This product requires assembly. See Figure 5. n Carefully remove the tool and any accessories from the box. Make sure that all items listed in the packing list are included. n Inspect the tool carefully to make sure no breakage or damage occurred during shipping. n Do not discard the packing material until you have carefully inspected and satisfactorily operated the tool. n If any parts are damaged or missing, please call 1-800-525-2579 for assistance.
ASSEMBLY MOUNTING WORK REST WORK REST (RIGHT) See Figure 6. n Remove the knob, star washer, and washer from the carriage bolt on the lower portion of wheel guard. n Using the slotted screw, star washer, washer and fastening knob, attach the work rest bracket to the inside of the wheel guard as shown. NOTE: The grooved work rest mounts on the left side. NOTE: The work rest bracket's lower slot must be positioned over the pin on the guard.
OPERATION NOTE: Excessive pressure may damage the tool, cause the motor to overheat, and prematurely wear down the grinding wheel. WARNING: Do not allow familiarity with tools to make you careless. Remember that a careless fraction of a second is sufficient to inflict serious injury. WARNING: Excessive pressure on a cold wheel may cause the wheel to crack. WARNING: Always wear safety goggles or safety glasses with side shields when operating power tools.
OPERATION SHARPENING TWIST DRILL BITS See Figure 9. Drill bits are best sharpened on a sharpening jig (available at most hardware stores). Begin on one side of the point at the existing angle, then twist the bit while maintaining contact with the grinding surface. Sharpen only the tip. This technique requires considerable practice, so take your time and make a few “dry runs” first with the grinder off. Be sure to maintain the original cutting edge angle as this is important to the efficiency of your bits.
MAINTENANCE WARNING: WARNING: Always disconnect the bench grinder from the power source before performing any assembly or adjustment. Failure to do so could result in accidental starting resulting in possible serious personal injury. When servicing, use only identical Ryobi replacement parts. Use of any other parts may create a hazard or cause product damage. WHEEL REPLACEMENT WARNING: See Figure 12.
MAINTENANCE Electric tools used on fiberglass material, wallboard, spackling compounds, or plaster are subject to accelerated wear and possible premature failure because the fiberglass chips and grindings are highly abrasive to bearings, brushes, commutators, etc. Consequently, we do not recommended using this tool for extended work on these types of materials. However, if you do work with any of these materials, it is extremely important to clean the tool using compressed air.
NOTES 17
OPERATOR’S MANUAL BENCH GRINDER BGH616 and BGH827 • SERVICE Now that you have purchased your tool, should a need ever exist for repair parts or service, simply contact your nearest Authorized Service Center. Be sure to provide all pertinent facts when you call or visit. Please call 1-800-525-2579 for your nearest Authorized Service Center. You can also check our web site at www.ryobitools.com for a complete list of Authorized Service Centers. • MODEL NO. AND SERIAL NO.
