Bosch Power Tools GCM12SD Saw User Manual


 
Electrical Requirements
l Connect this saw to a 120V, 15-amp branch cir-
cuit with a 15-amp time delay fuse or circuit
breaker. Using the wrong size fuse can damage
the motor.
l Fuses may “blow” or circuit breakers may trip
frequently if motor is overloaded. Overloading
can occur if you feed the blade into the
workpiece too rapidly or start and stop too often
in a short time.
l Most motor troubles may be traced to loose or
incorrect connections, overload or low voltage
(such as small size wire in the supply circuit or
overly long supply circuit wire). Always check
the connections, the load and the supply circuit
whenever motor does not work well.
920A?60?.82
Your saw is equipped with an automatic electric
brake which is designed to stop the blade from
spinning in about five (5) seconds after you release
the trigger switch. It is useful when making certain
cuts in wood where a coasting blade would result in
a wide, imprecise cut.
*52;2920A?60.9=<D2?6@9<@A1B2
A< /9<D; 3B@2 <? <A52? 0.B@2@
A52 :<A<? D699 4?.1B.99F @9<D 1<D; .;1 A52
/?.86;4.0A6<;6@6;6A6.A21#" ,/FA52?292.@2<3
A52A?6442?@D6A05
The electric blade brake of your miter saw has been
designed for highest degree of reliability, but
unexpected circumstances such as contamination on
the commutator and brushes or failure of motor’s
components can cause the brake not to activate. If
this condition occurs, turn the saw “ON” and “OFF”
four to five times without contacting the workpiece. If
the tool operates but the brake does not consistently
stop the blade in about five seconds, DO NOT use
saw and have it serviced immediately.
'52 /?.82 .0A6<; <3 A56@ @.D 6@
;<A6;A2;121.@.@.32AF32.AB?2
%2:2:/2? A< 92A A52 @.D /9.12 0<:2 A< .
0<:=92A2@A<= /23<?2?.6@6;4A52 /9.123?<:A52
D<?8=6202@.9D.F@A524B.?1@F@A2:6@F<B?
/2@A =?<A20A6<; .4.6;@A B;6;A2;A6<;.9 0<;A.0A
D6A5.@=6;;6;4@.D/9.12")%D2142<=2;
<?1232.AA5209<@6;4.0A6<;<3A529<D2?4B.?1
*%""
!
*%""
!

&.32AF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
General Safety Rules for Benchtop Tools . . . . 2-3
Safety Rules for Miter Saws . . . . . . . . . . . . . . 3-6
'./92<3<;A2;A@ . . . . . . . . . . . . . . . . . . . . . . . . . 7
920A?60.9%2>B6?2:2;A@ . . . . . . . . . . . . . . . . . . . 7
Electric Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2AA6;4A<;<D,<B?!6A2?&.D . . . . . . . . . . . 8-9
@@2:/9F . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-16
Unpacking and Checking Contents . . . . . . . . . 10
Tools Needed for Assembly and Alignment . . . 11
Attaching Loose Parts . . . . . . . . . . . . . . . . . . . 12
Removing and Installing Blades . . . . . . . . . 13-14
Assembling Dust Collection System . . . . . . 15-16
17B@A:2;A@. . . . . . . . . . . . . . . . . . . . . . . . . . 17-25
Using the Head Assembly Lock Pin . . . . . . . . . 17
Using the Glide Movement Controller . . . . . . . 17
Using the Mechanism Lock Lever . . . . . . . . . . 18
Depth of Cut Adjustment . . . . . . . . . . . . . . . . . 19
Miter Detent System – Adjustment Procedure . . 20
0° Bevel Stop – Adjustment Procedure . . . 21-22
45° Bevel Stop – Adjustment Procedure . . 23-24
Adjusting Bevel Lock Tension. . . . . . . . . . . . . . 25
Adjusting Front Stabilizing Bolt. . . . . . . . . . . . . 25
'?.;@=<?A6;4.;1!<B;A6;4 . . . . . . . . . . . . . 26-27
Mounting Applications. . . . . . . . . . . . . . . . . . . . 27
$?2=.?6;43<?&.D#=2?.A6<;@ . . . . . . . . . . . 28-31
Body and Hand Positions . . . . . . . . . . . . . . . . . 28
Workpiece Support . . . . . . . . . . . . . . . . . . . 29-30
&.D#=2?.A6<;@ . . . . . . . . . . . . . . . . . . . . . . . 32-50
Switch Activation. . . . . . . . . . . . . . . . . . . . . . . . 32
Using Miter Detent System. . . . . . . . . . . . . . . . 33
M
iter Detent Override . . . . . . . . . . . . . . . . . . . . 33
Chop Cuts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Slide Cuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Miter Cuts . . . . . . . . . . . . . . . . . . . . . . . . . . 36-38
Bevel Cuts . . . . . . . . . . . . . . . . . . . . . . . . . . 39-42
Compound Cuts . . . . . . . . . . . . . . . . . . . . . . . . 43
Cutting Grooves . . . . . . . . . . . . . . . . . . . . . . . . 44
Cutting Base Molding . . . . . . . . . . . . . . . . . . . . 45
Cutting Crown Molding . . . . . . . . . . . . . . . . . . . 45
Crown Molding Angled to Table and Fence . . . 46
Crown Molding Lying Flat on Table . . . . . . . . . 47
Crown Molding Auxiliary Fence. . . . . . . . . . 48-49
Special Cuts . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
!.6;A2;.;02.;1 B/?60.A6<; . . . . . . . . . . . .51-52
'?<B/92@5<<A6;4 . . . . . . . . . . . . . . . . . . . . . . 53-55
Troubleshooting Guide – Electrical. . . . . . . . . . 53
Troubleshooting Guide – General . . . . . . . . 54-55
002@@<?62@ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table of Contents
BM 2610007877 04-10:BM 2610007877 04-10.qxp 4/26/10 8:13 AM Page 7