PROBLEM
Tool vibrates or shakes.
Head assembly does not
slide freely when attempting
a slide cut.
Blade does not cut com-
pletely through workpiece.
Saw blade or lower guard
cuts or contacts sliding
fence when saw is set for
bevel cuts.
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.
16099221PH GCM18V-12SD OSI 20220506.indd 56
Troubleshooting
CAUSE
1. Saw blade not round.
2. Saw blade damaged.
3. Saw blade loose.
4. Other.
The slide rail lock knob has
been tightened.
Replacement blade is less
than 12" (305mm) diameter.
Sliding fence is not moved
out from path of saw blade
before making bevel cut.
Attachments and Accessories
-56-
CORRECTIVE ACTION
1. Replace blade.
2. Replace blade.
3. Check that blade is prop-
erly seated on the inner
washer. See "Removing
and Installing Blades" on
page 19.
4. Authorized service.
Loosen the slide rail lock
knob (Fig. 40 on page 35,
7) by turning it counter-
clockwise.
Change to a blade that is
fully 12" (305mm) diameter.
Move sliding fence to be
clear of lower guard and
saw blade. Then perform a
"dry run" to check for clear-
ances before making bevel
cuts. See "Dry Run" on page
31.
T1B Portable Miter Saw Stand
GTA3800 Portable Miter Saw Stand with
Wheels
T4B Gravity-Rise Wheeled Miter Saw Stand
5/6/22 12:16 PM