Bosch GCM12SD Operating And Safety Instructions Manual
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Bosch GCM12SD Operating And Safety Instructions Manual

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BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 1
IMPORT NT:
Read Before Using
GCM12SD
Call Toll Free for
Consumer Information
& Service Locations
1-877-BOSCH99 (1-877-267-2499) www.boschtools.com
For English Version
See page 2
IMPORT NTE:
Leer antes de usar
Operating/Safety Instructions
Instrucciones de funcionamiento y seguridad
Consignes de fonctionnement/sécurité
Llame gratis para
obtener información
para el consumidor y
ubicaciones de servicio
Versión en español
Ver la página 56
IMPORT NT :
Lire avant usage
Pour obtenir des informations
et les adresses de nos centres
de service après-vente,
appelez ce numéro gratuit
Version française
Voir page 110

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Summary of Contents for Bosch GCM12SD

  • Page 1 Read Before Using Leer antes de usar Lire avant usage Operating/Safety Instructions Instrucciones de funcionamiento y seguridad Consignes de fonctionnement/sécurité GCM12SD Llame gratis para Pour obtenir des informations Call Toll Free for obtener información et les adresses de nos centres...

  • Page 2: Safety

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 2 Safety “READ ALL INSTRUCTIONS” — Failure to follow the SAFETY RULES identified by WARNING BULLET ( ) symbol listed BELOW, and other safety precautions, may result in serious personal injury. General Safety Rules Do not expose power tools to rain or wet conditions.

  • Page 3: Safety Rules For Miter Saws

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 3 Safety “READ ALL INSTRUCTIONS” — Failure to follow the SAFETY RULES identified by WARNING BULLET ( ) symbol listed BELOW, and other safety precautions, may result in serious personal injury. Use safety equipment.
  • Page 4 The GCM12SD miter saw has an extremely longer than the table top (see page 29). smooth action and requires the operator to Workpieces longer or wider than the miter saw firmly grip the handle before turning “ON”...
  • Page 5 REMINDER Of All SAfETY RUlES NEEDED fOR SAfE OpERATION Of THIS MITER SAW. Do not use the Bosch GCM12SD miter saw to cut fiber cement board. The Bosch miter saw is not WARNING intended to cut fiber cement board.
  • Page 6 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 6 Safety “READ ALL INSTRUCTIONS” — Failure to follow the SAFETY RULES identified by WARNING BULLET ( ) symbol listed BELOW, and other safety precautions, may result in serious personal injury. Double-Insulated Tools Extension Cords Replace damaged cords immediately.

  • Page 7: Table Of Contents

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 7 Table of Contents Safety ....... . . 2-6 preparing for Saw Operations .

  • Page 8: Getting To Know Your Miter Saw

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 8 Getting To Know Your Miter Saw To avoid injury from accidental 10. Kerf Inserts – Kerf inserts can be adjusted to WARNING different blade widths to minimize workpiece starting, remove plug from power tear-out.
  • Page 9 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 9 Getting To Know Your Miter Saw (not shown) (not shown) NOTE: To view items 21 through 31, see page 8. 21. Base Extension Clamping levers – Lock the 34. pivot post – Provides support for the saw head, base extensions at the desired positions.

  • Page 10: Assembly

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 10 ssembly Unpacking and Checking Contents Unpacking the Miter Saw – When removing this tool Checking Contents in package – Open the top of from packaging materials, reach down to the two side the package and look for the included loose parts.

  • Page 11: Tools Needed For Assembly And Alignment

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 11 ssembly Tools Needed for Assembly and Alignment Combination Square #2 Phillips Screwdriver 6/4mm Hex Key 10mm Socket (supplied) (supplied) NOTE: A 6mm and a 4mm hex key can be substituted for the supplied 6/4mm hex key. Combination Square Must Be True - Checking Combination Square 1.

  • Page 12: Attaching Loose Parts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 12 ssembly Attaching loose parts 4. Loosen the knob 1/2 turn to unlock it. The table is avoid possible injury, WARNING now free to be moved on the base. disconnect plug from power source before performing...

  • Page 13: Removing And Installing Blades

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 13 ssembly Removing and Installing Blades avoid possible injury, WARNING disconnect plug from power Guard Link source before performing assembly, adjustments or repairs. Moving Guard Assembly 1. Position the saw in the UP position and at 0° bevel.
  • Page 14 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 14 ssembly Removing and Installing Blades avoid possible injury, Tighten the cover plate screws. WARNING WARNING disconnect plug from power loose cover plate screws may source before performing assembly, interfere with and hang up lower blade guard. adjustments or repairs.

  • Page 15: Assembling Dust Collection System

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 15 ssembly Assembling Dust Collection System Using and Cleaning the Dust Bag avoid possible injury, WARNING disconnect plug from power Using Dust Bag – Attach the clean bag to the elbow. source before performing...
  • Page 16 Attaching Deflector – Start by stretching and tube diameter. The 35mm diameter fitting is the hooking the deflector over the rear post, followed by standard size used on the Bosch Airsweep Vacuum hooking over each side hook (see Figure 10).

  • Page 17: Adjustments

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 17 djustments Using the Head Assembly lock pin To Disengage the Head Assembly avoid possible injury, WARNING disconnect plug from power lock pin source before performing assembly, 1. Grasp the main handle and press down on the adjustments or repairs.

  • Page 18: Using The Mechanism Lock Lever

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 18 djustments Using the Mechanism lock lever With Saw in the full forward position – avoid possible injury, WARNING disconnect plug from power 1. Grasp the main handle (item 3 - page 8) and pull source before performing...

  • Page 19: Depth Of Cut Adjustment

    Setting Blade Depth for Non-Through Cuts for Cutting Grooves NOTE: For best results, Bosch recommends the use of a table saw with an optional dado blade set for cutting grooves and non-through cuts. In the event this is not available, the feature described below is a convenient alternative.

  • Page 20: Miter Detent System - Adjustment Procedure

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 20 djustments Miter Detent System – Adjustment procedure Calibrating Miter Detent System Miter Scale pointer Adjustment 1. Engage the miter detent at the 0° position. Loosen 1. Rotate table to 0° position and lock in place. the miter lock knob 1/2 turn.

  • Page 21: 0° Bevel Stop - Adjustment Procedure

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 21 djustments 0° Bevel Stop – Adjustment procedure avoid possible injury, WARNING disconnect plug from power source before performing assembly, adjustment or repair. Checking 0° Bevel Stop Setting 1. Hold the saw head assembly down and push in the head assembly lock pin (item 43 –...
  • Page 22 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 22 djustments 0° Bevel Stop – Adjustment procedure 4. Place combination square on table and against avoid possible injury, WARNING blade (see Figure 22). disconnect plug from power source before performing assembly, 5.

  • Page 23: 45° Bevel Stop - Adjustment Procedure

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 23 djustments 45° Bevel Stop – Adjustment procedure avoid possible injury, WARNING disconnect plug from power Contacting Combination source before performing assembly, Blade Square Head adjustment or repair. Checking 45° Bevel Stop Setting 1.
  • Page 24 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 24 djustments 45° Bevel Stop – Adjustment procedure 4. Place an 8mm open end wrench on bolt head “F” avoid possible injury, WARNING (see Figure 25). disconnect plug from power source before performing assembly,...

  • Page 25: Adjusting Bevel Lock Tension

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 25 djustments Adjusting Bevel lock Tension Checking Bevel lock Tension 3. Adjusting Tension (see steps 1 and 3 above) Pull up and push down the bevel lock lever. 1. Pull up the bevel lock lever to release tension. If it A) If the lever is too hard to pull or push, the feels too hard to pull up, an adjustment may be tension can be decreased by using a 17mm...

  • Page 26: Transporting And Mounting

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 26 Transporting and Mounting avoid injury, follow WARNING statements identified below by Head Assembly the BUllET ( ) symbol. Lock Pin Never lift this saw by grasping the base Cast-In Carry extensions when they are in the extended Handle position.

  • Page 27: Mounting Applications

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 27 Transporting and Mounting Mounting Applications Workbench permanent Attachment Temporary Mounting Using Clamps 1. Each of the four mounting holes should be bolted If necessary, clamp the miter saw to a workbench securely using 5/16"...

  • Page 28: Preparing For Saw Operations

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 28 Preparing for Saw Operations Body and Hand position Hold workpiece firmly against table and fence position your body and hands WARNING to prevent movement. properly to make cutting easier and safer. failure to follow all instructions, Keep hands in position until trigger has been identified below by bullet ( ) symbols, may result...

  • Page 29: Workpiece Support

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 29 Preparing for Saw Operations Workpiece Support Clamps Using the Workpiece Clamp – This clamp easily secures a workpiece to the table or base. Sliding Fence 1. Insert the clamp’s knurled bar down into a clamp post hole;...
  • Page 30 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 30 Preparing for Saw Operations Workpiece Support long Workpiece Support Additional Workpiece Support Blocks – Long pieces need extra support. The base long workpieces have WARNING height (3-3/4") is designed to match the standard tendency to tip over unless lumber of two 2xs and one 1x.
  • Page 31 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 31 Preparing for Saw Operations Making an Auxiliary fence 6. For best splinter-free cuts, use the chop cut method. Certain types of molding need a fence face extension 7. When making slide cuts, the center must be because of the size and position of the workpiece.

  • Page 32: Saw Operations

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 32 Saw Operations Switch Activation For safety, the switch lever is designed to prevent Padlock Hole accidental starts. To operate safety switch, press the Power Switch Lever switch “Lock-OFF” button with either thumb to disengage the lock, then pull the power switch lever and release the switch “Lock-OFF”...

  • Page 33: Using Miter Detent System

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 33 Saw Operations Using Miter Detent System 1. Loosen the miter lock knob about 1/2 turn. 2. Grip the lock knob, and then reach down with your Miter Scale index finger to pull up on the miter detent lever – Pointer pull lever until it is out from the detent plate.

  • Page 34: Chop Cuts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 34 Saw Operations Chop Cuts What’s a Chop Cut – Saw features Making a Chop Cut A “chop cut” is a cross-cut made when the saw is 1. Activate the switch, then fully lower the saw head held to the rearmost position and is operated like to make the cut.

  • Page 35: Slide Cuts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 35 Saw Operations Slide Cuts What’s a Slide Cut – Saw features A “slide cut” is made with the head assembly unlocked and able to move away from the fence. This movement is supported and precisely controlled by the axial glide system.

  • Page 36: Miter Cuts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 36 Saw Operations Miter Cuts What’s a Miter Cut – Saw features The crown molding detents on the left and right are at 31.6° for compound cutting 38° “spring A “miter cut” is a cross-cut made with the blade angle”...
  • Page 37 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 37 Saw Operations Miter Cuts pitch angle information – The top section of the miter scale shows angle settings required to cut roof rafters to the “Pitch Angle” system. 2/2, 4/12, 6/12, etc., are all pitch angles.
  • Page 38 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 38 Saw Operations Miter Cuts Miter cutting 6-1/2" base boards – This saw can Setting Saw to Make a Miter Cut miter cut 6-1/2" tall base boards vertically positioned 1. See Using Miter Detent on page 33. against the fence at any angle from 0°...

  • Page 39: Bevel Cuts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 39 Saw Operations Bevel Cuts What’s a Bevel Cut – Saw features A “bevel cut” is a cross-cut made with the blade perpendicular to the fence and with the table set at 0°...
  • Page 40 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 40 Saw Operations Bevel Cuts Bevel range selector knob – This saw has a front control on the right side of the table arm. This is called the bevel range selector knob (item 41 – page 9).
  • Page 41 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 41 Saw Operations Bevel Cuts Using the Bevel Range Selector Knob NOTE: The selector knob will stay in this “override” position. Turn the knob slightly clockwise and it will Bevel Range 1 = 0-45° left snap back to bevel range 1 (default position).
  • Page 42 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 42 Saw Operations Bevel Cuts Bevel Angle Stops and Detents Setting Saw to Make a Bevel Cut The saw has bevel angle stops that accurately 1. Lift up the bevel lock lever to unlock (see item 14 stop at critical angles: 45°...

  • Page 43: Compound Cuts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 43 Saw Operations Compound Cuts What’s a Compound Cut – Saw features A “compound cut” is a single cross-cut made with the saw blade preset at two angles combining a Clamp miter angle (relative to the vertical fence) with a bevel angle (relative to the horizontal table).

  • Page 44: Cutting Grooves

    19 in the Adjustments section on “Setting Blade Depth for Non-Through Cuts for Cutting Grooves.” NOTE: For best results, Bosch recommends the use of a table saw with an optional dado blade set for cutting grooves and non-through cuts. In the event this is not available, the feature described below is a convenient alternative.

  • Page 45: Cutting Base Molding

    90°; therefore, that fits against the wall. you will need to fine-tune your settings. This miter saw has special miter detents at optional Bosch DAF220K MiterFinder 31.6° bevel detents 33.9°.

  • Page 46: Crown Molding Angled To Table And Fence

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 46 Saw Operations Crown Molding Angled to Table and fence The preferred method for cutting crown molding with NOTE: Always take a test cut using scrap to confirm this saw is with the molding lying flat on the table. correct angles.

  • Page 47: Crown Molding Lying Flat On Table

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 47 Saw Operations Crown Molding lying flat on Table NOTE: Position workpiece with its back flat on the NOTE: Always take a test cut using scrap to confirm saw table. correct angles. Always place top edge of molding against fence (decorative edge is at the bottom of crown molding.) “Spring angle”...

  • Page 48: Crown Molding Auxiliary Fence

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 48 Saw Operations Crown Molding Auxiliary fence Making an Auxiliary fence: When making a compound cut WARNING Required pieces: on a molding lying flat on the Wood Board (described below) table, narrow cut-off pieces (2" or less in width) 4 –...
  • Page 49 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 49 Saw Operations Crown Molding Auxiliary fence Auxiliary Fence - Using an Auxiliary Fence when cutting Crown molding flat on the table will reduce splintering of your workpiece and movement of small cut-off pieces. Remove the saw’s sliding fences (see page 29) before attaching the auxiliary fence. Build auxiliary fence by following pattern below - Material: 3/4"...

  • Page 50: Special Cuts

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 50 Saw Operations Special Cuts Cutting bowed material and round material are only two examples of special cuts. Clamp Cutting Bowed Material If workpiece is bowed or warped, clamp it with the outside bowed face toward the fence.

  • Page 51: Maintenance And Lubrication

    We recommend Periodically, the drive belt should be inspected for that all tool service be performed by a Bosch factory excessive wear. If the belt shows signs of drying out, Service Center or Authorized Bosch Service Station.
  • Page 52 BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 52 Maintenance and Lubrication Cleaning Tool lubrication Your Bosch tool has been properly lubricated and is avoid accidents, always WARNING ready to use. It is recommended that tools with gears disconnect the tool from the...

  • Page 53: Troubleshooting

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 53 Troubleshooting Troubleshooting Guide - Electrical pROBlEM CAUSE CORRECTIVE ACTION Brake does not stop blade in about 1. Brushes not seated or lightly - Inspect/clean or replace 5 seconds. sticking or worn. brushes (see Maintenance and Lubrication section).

  • Page 54: Troubleshooting Guide - General

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 54 Troubleshooting Troubleshooting Guide - General pROBlEM CAUSE CORRECTIVE ACTION Head assembly does not bevel 1. Bevel detent pin is engaged. - Pull out 33.9° bevel detent pin, then to desired position. and locks bevel angle at 33.9°.

  • Page 55: Accessories

    BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 55 Troubleshooting Troubleshooting Guide - General pROBlEM CAUSE CORRECTIVE ACTION Tool vibrates or shakes. 1. Saw blade not round. - Replace blade. 2. Saw blade damaged. - Replace blade. 3. Saw blade loose. - Check that blade is properly seated on the inner washer.

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