Safety

!WARNING “READ ALL INSTRUCTIONS” — Failure to follow the SAFETY RULES identified by BULLET (l) symbol listed BELOW and other safety precautions, may result in serious personal injury.

Double Insulated Tools

Double insulation is a design concept used in electric power tools which eliminates the need for the three wire grounded power cord and grounded power supply system. It is a recognized and approved system by Underwriter’s Laboratories, CSA and Federal OSHA authorities.

Servicing of a tool with double insulation requires care and knowledge of the system and should be performed only by a qualified service technician.

WHEN SERVICING, USE ONLY IDENTICAL REPLACEMENT PARTS.

POLARIZED PLUGS. If your tool is equipped with a polarized plug (one blade is wider than the other), this plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install the proper outlet. Do not change the plug in any way.

“SAVE THESE INSTRUCTIONS”

Extension Cords

Replace damaged cords immediately. Use of damaged cords can shock, burn or electrocute.

If an extension cord is necessary, a cord with adequate size conductors should be used to prevent excessive voltage drop, loss of power or overheating. The table shows the correct size to use, depending on cord length and nameplate amperage rating of tool. If in doubt, use the next heavier gauge. Always use U.L. and CSA listed extension cords.

RECOMMENDED SIZES OF EXTENSION CORDS

Tool’s

 

120 Volt A.C. Tools

 

Ampere

 

Cord Length in Feet

 

Rating

 

Cord Size in A.W.G.

 

 

 

 

 

 

 

25

50

100

150

 

 

 

 

 

3-6

18

16

16

14

6-8

18

16

14

12

8-10

18

16

14

12

10-12

16

16

14

12

12-16

14

12

 

 

 

 

 

NOTE: The smaller the gauge number, the heavier the cord.

Table of Contents

 

Page

 

Page

Safety

2-6

Installation

44, 46

General Safety Rules for Benchtop Tools

2-3

Mounting Applications

46

Safety Rules for Miter Saws

3-6

Basic Saw Operations

48-54

Table of Contents

6

Body and Hand Position

48

Electrical Requirements

7

Workpiece Support

50, 52

Getting to Know your Miter Saw

8-9

Switch Activation

52

Assembly

26-32

Detent Override

54

Tools needed for Assembly and Alignment

26

Sliding Base/Fence Extension

54

Unpacking and Checking Contents

28

Saw Operations

56-72

Installation of Miter Lock Knob

28

Miter Cut

56

Installation and removal of the Blade

30

Bevel Cut

58

Assembling Dust Elbow and Dust Bag

32

Compound Cuts

60

Adjustments

34-44

Base Molding

62

Blade square to Table (90°)

34

Cutting Crown Molding

65

Blade 45° to Table

36

Special Cuts

72

Blade Square to Fence

38

Accessories

74

Miter Scale and Vernier Scale Usage

40

Maintenance and Lubrication

76, 78

Miter Scale (Vernier) Indicator Adjustment

42

Trouble Shooting

80, 82

Crown Molding Detent Adjustment (Bevel)

42

 

 

6

Page 6
Image 6
Bosch Power Tools 3912 manual Table of Contents