Bosch 3915 User Manual download pdf (Page 6)

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 sys-

tem 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. 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 out-

let, reverse the plug. If it still does not fit, contact

a qualified electrician to install the proper outlet.

To reduce the risk of electrical shock, do not

change the plug in any way.

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 pre-

vent 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

Tools 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 N/A N/A

NOTE: The smaller the gauge number, the heavier

the cord.

Safety

“READ ALL INSTRUCTIONS” — Failure to follow the SAFETY RULES identified by

BULLET (

●) symbol listed BELOW and other safety precautions, may result in serious person-

al injury.

“SAVE THESE INSTRUCTIONS”

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

General Safety Rules For Bench Top Tools. . . . 2

Safety Rules For Miter Saws . . . . . . . . . . . . . 3-6

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . 6

Electrical Requirements. . . . . . . . . . . . . . . . . . . 7

Getting To Know Your Miter Saw . . . . . . . . . . 8-9

Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12

Tools Needed For Assembly And Alignment . . 10

Unpacking and Checking Contents . . . . . . . . . 10

Installation and Removal of the Blade . . . . 11-12

Assembling Dust Elbow and Dust Bag . . . . . . 12

Adjustments . . . . . . . . . . . . . . . . . . . . . . . . 13-16

Blade Square To Table (90°) . . . . . . . . . . . . . . 13

Blade 45° To The Table . . . . . . . . . . . . . . . . . 14

Blade Square To Fence . . . . . . . . . . . . . . . . . 15

Miter Scale Indicator Adjustment. . . . . . . . . . . 15

Kerf Insert . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Depth Stop Adjustment. . . . . . . . . . . . . . . . . . 16

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . 17-18

Mounting Applications. . . . . . . . . . . . . . . . . . . 17

Basic Saw Operations. . . . . . . . . . . . . . . . . 19-22

Body and Hand Position . . . . . . . . . . . . . . . . . 19

Workpiece Support. . . . . . . . . . . . . . . . . . . . . 20

Switch Activation . . . . . . . . . . . . . . . . . . . . . . 21

Detent Override . . . . . . . . . . . . . . . . . . . . . . . 22

Sliding Base/Fence Extension . . . . . . . . . . . . 22

Saw Operations . . . . . . . . . . . . . . . . . . . . . . 23-30

Chop Cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Slide Cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Miter Cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Bevel Cut . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Compound Cuts . . . . . . . . . . . . . . . . . . . . . . . 25

Cutting Grooves (Dado Cut) . . . . . . . . . . . . . . 26

Cutting Base Molding . . . . . . . . . . . . . . . . . . . 27

Cutting Crown Molding . . . . . . . . . . . . . . . . . . 27

Special Cuts. . . . . . . . . . . . . . . . . . . . . . . . . . 30

Maintenance and Lubrication . . . . . . . . . . . . . 31

Troubleshooting . . . . . . . . . . . . . . . . . . . . . 32-33

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Table of Contents

WARNING

1 2 3 4 5 6 7 8 9 10 11 ... 103 104

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Bosch 3915 User Manual Page 6

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