Attachments/Accessories - Bosch GCM18V-12GDC Operating/Safety Instructions Manual

Troubleshooting Guide - General
PROBLEM
Tool vibrates or shakes.
Head assembly does not slide freely
when attempting a slide cut.
Blade does not cut completely through
workpiece.
Saw blade or lower guard cuts or con-
tacts sliding fence when saw is set for
bevel cuts.
Bevel angle is not securely held when
bevel lock lever is locked.
GAM 220 MF and GAM 270 MFL Digital Angle Finder/
Compound Cut Calculator/Protractor/ Level – Gives
you the information needed to position cuts so that they fit
together precisely even if the room is out of square.
MS1233 Crown Stop Set – Correctly hold crown molding
in an inclined position against fence. Set molding for simple
vertical cutting – no compound cutting required.
Troubleshooting
CAUSE
1. Saw blade not round.
2. Saw blade damaged.
3. Saw blade loose.
4. Other
Mechanism lock lever is engaged.
1. Depth stop plate is pulled out for
non-through cuts.
2. Replacement blade is less than 12"
(305mm) diameter.
Sliding fence is not moved out from
path of saw blade before making bevel
cut.
Bevel lock lever needs tension adjust-
ment.

Attachments/Accessories

T1B Portable Miter Saw Stand
GTA3800 Portable Miter Saw Stand with Wheels
T4B Gravity-Rise Wheeled Miter Saw Stand
MS1234 Length Stop Kit
Blades
CORRECTIVE ACTION
1. Replace blade.
2. Replace blade.
3. Check that blade is properly seated
on the inner washer. See Removing
and Installing Blades on page 19.
4. Authorized service.
Push down on mechanism lock lever
to disengage (see page 23).
- Push depth stop plate inward to set
for full-depth cuts (see page 24).
- Change to a blade that is fully 12"
(305mm) diameter.
Move sliding fence to be clear of lower
guard and saw blade; perform a "dry
cut" to check for clearances before
making bevel cuts (see pages 47–50).
Increase bevel lock lever tension by
adjusting lock nut (see page 27).
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