Sander MODEL GA7911 I N S T R U C T I O N M A N U A L WARNING: For your personal safety, READ and UNDERSTAND before using. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE. w w w. m a k i t a t o o l s .
SPECIFICATIONS Model GA7911 No load speed (RPM) 6,000/min Overall length 412 mm (16-1/4”) Net weight 5.5 kg (12.1 lbs) Spindle thread 5/8” • Manufacturer reserves the right to change specifications without notice. • Specifications may differ from country to country. GENERAL SAFETY RULES USA001-2 (For All Tools) WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury.
5. Avoid body contact with grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is grounded. 6. Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock. 7. Do not abuse the cord. Never use the cord to carry the tools or pull the plug from an outlet. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cords immediately.
SERVICE 23. Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel could result in a risk of injury. 24. When servicing a 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 electric shock or injury.
An adapter Fig. “B” and “C” is available for connecting Fig. “A” type plugs to two-prong receptacles. The green-colored rigid ear, lug, etc., extending from the adapter must be connected to a permanent ground, such as a properly grounded outlet box. GROUNDING METHODS ADAPTER GROUNDED OUTLET METAL SCREW GROUNDED OUTLET BOX GROUNDING PIN Fig. A TAB FOR GROUNDING SCREW Fig. B SPECIFIC SAFETY RULES Fig.
11. Do not leave the tool running. Operate the tool only when hand-held. 12. Do not touch the workpiece immediately after operation; it may be extremely hot and could burn your skin. 13. Ventilate your work area adequately when you perform sanding operations. 14. ALWAYS wear proper apparel including long sleeve shirts, leather gloves and shop aprons to protect skin from contact with hot grindings. 15.
FUNCTIONAL DESCRIPTION • 001028 CAUTION: Always be sure that the tool is switched off and unplugged before adjusting or checking function on the tool. Shaft lock • 1 CAUTION: Never actuate the shaft lock when the spindle is moving. The tool may be damaged. Press the shaft lock to prevent spindle rotation when installing or removing accessories. 1. Shaft lock 001043 Switch action • 2 1. Switch trigger 2.
ASSEMBLY • 001059 CAUTION: Always be sure that the tool is switched off and unplugged before carrying out any work on the tool. Installing side grip (handle) • CAUTION: Always be sure that the side grip is installed securely before operation. Screw the side grip securely on the position of the tool as shown in the figure. 001114 1 2 3 Installing or removing abrasive disc (optional accessory) NOTE: • Use sander accessories specified in this manual. These must be purchased separately.
• 001066 Guard assembly Part No. 191214-3 ... For 180 mm (7”) Part No. 191215-1 ... For 230 mm (9”) Guard accessory kit Part No. 191228-2 ... For 180 mm (7”) Part No. 191231-3 ... For 230 mm (9”) Installing or removing wheel guard 1 • 2 3 CAUTION: When using a depressed center grinding wheel/Multidisc, flex wheel or wire wheel brush, the wheel guard must be fitted on the tool so that the closed side of the guard always points toward the operator.
001103 1 2 3 4 1. 2. 3. 4. Installing or removing flex wheel (optional accessory) • Lock nut Flex wheel Plastic pad Inner flange Follow instructions for depressed center grinding wheel/ Multi-disc but also use plastic pad over wheel. See order of assembly on accessories page in this manual. OPERATION • 001129 15˚ 10 B WARNING: It should never be necessary to force the tool. The weight of the tool applies adequate pressure. Forcing and excessive pressure could cause dangerous wheel breakage.
001143 1 Operation with wire cup brush (optional accessory) 2 • • 1. Wire cup brush 2. Urethane washer CAUTION: Check operation of brush by running tool with no load, insuring that no one is in front of or in line with brush. Do not use brush that is damaged, or which is out of balance. Use of damaged brush could increase potential for injury from contact with broken brush wires. Unplug tool and place it upside down allowing easy access to spindle. Remove any accessories on spindle.
MAINTENANCE 001171 • 1 CAUTION: Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance. The tool and its air vents have to be kept clean. Regularly clean the tool’s air vents or whenever the vents start to become obstructed. 2 1. Exhaust vent 2. Inhalation vent 001145 Replacing carbon brushes Remove and check the carbon brushes regularly. Replace when they wear down to the limit mark.
recommended in this manual. Your failure to do so could result in personal injury to you and others. If you need any assistance for more details regarding these accessories, ask your local Makita service center.
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Cut First-Class Postage Required Post Office will not deliver without proper postage. Makita U.S.A., Inc.
MAIL THIS PORTION Your answer to the following questions are appreciated. 1. This product was purchased from: 3. How did you learn of about this product: Other ( Magazine Radio Hardware/Lumber Store From Dealer Exhibition Tool Distributor Newspaper From Friend Industrial Supply Store Display Previous Usage Construction Supply Catalog Other ( Home Center ) 2. Use of the product is intended for: ) 4.
FACTORY SERVICE CENTERS 1-800-4-MAKITA RETAIN THIS PORTION FOR YOUR RECORDS ALABAMA 2365 Pelham Parkway Pelham, AL 35124 (205) 620-1791 COLORADO 11839 E. 51st Ave. Denver, CO 80239-2709 (303) 371-2850 KENTUCKY 1215 S. Hurstbourne Parkway Louisville, KY 40222 (502) 326-3740 NEW MEXICO 5805 Menaul Blvd. NE Albuquerque, NM 87110 (505) 881-4619 PUERTO RICO 200 Guayama St. Hato Rey, PR 00917 (787) 250-8776 ARIZONA 3707 E. Broadway Rd., Ste. 6 Phoenix, AZ 85040 (602) 437-2850 CONNECTICUT 508 Spring St.
WARNING Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: • lead from lead-based paints, • crystalline silica from bricks and cement and other masonry products, and • arsenic and chromium from chemically-treated lumber. Your risk from these exposures varies, depending on how often you do this type of work.