CRAIN 820/820V Operating Instructions Manual
€
INSTRUCTION
MANUAL
FOR
No.
82A1820V
HEAVY.DUTY
UNDERCUT
SAW
MAR
WALLS/JAMBS TOE.SPACES
INSIDE
CORNER
HANGING
DOORS
OPERATI NG I NSTRUCTIONS
The Heavy-Duty
Undercut Saw is designed for
undercutting
wooden
door
jambs,
moldings,
base, as well
as masonry
and stone, to ailow new floor
dovering5 to be fit
underneath'.
Do not use this
saw
for
sanding floors,
cutting metal,
or any
other
purpose
not
described in this instruction
manual.
SAFEW FIRST! For
safe operation,
please
take
time to
carefully read allthe instructions
and rules in this
booklet.
SAFETY
GLASSES:
Always wear
safety
glasses
when
using a
power
tool. Also
use
face
or dust mask if
cutting
operation is
dusty.
EAR PROTECTION:
Wear ear
plugs
when
using
this
saw.
BLADE
GUARD: The blade
guard
attached
to
your
saw
is
for
your
safety and
protection.
lf it
becomes damaged,
do
not
operate
your
saw
until
it has
been
repaired.
Always leave
blade
guard
in operating
position
when
using the
saw.
DOUBLE-INSULATED:
This tool is constructed with
two
separate
layers
of electrical
insulation.
Atool built with this
insulation
system does not need
to
be
grounded.
DANGEROUS
ENVIRONMENTS: Keep work
area clean;
clutter invites accidents. Do not
use
power
tool
on damp
or wet floor. Be sure that there is
good
lighting.
ACCIDENTAL STARTING: To
avoid accidental starting, do
not carry tool with fingers
on switch.
CORD ABUSE: Never
carry
tools by the cord
or
yank
the
cord
to
disconnect
from
an outlet.
Keep
cords away from
heat,
oil, and sharp edges.
EXTENSION
CORD:
To minimize
power
loss
and
prevent
overheating, use
maximum
of
25 feet long
and
16
AWG.
KEEP BLADES
CLEAN AND SHARP: Using a dull blade
will
place
a heavy
load
on
your
saw and
increase
the danger
of
kickback. For replacement,
use only Crain
#821
Carbide-
Tipped Blade,
#805
Masonry Blade or#822 Diamond Blade.
WORKING TERMINOLOGY Fisure 1
Please refer to the
diaoram
below for the terms
used
in
this instruction manual
HEIGHT
ADJUSTER
WING
NUT
DEPTH
GAUGE
ADJUSTMENT
SCALE
Figure 1
THREE-ARM
KNOB
BLADE REMOVAL:
see
Fisure 2
r
Turn
off and
unplug saw.
Retract the
height
ad-
juster
so
it is
flush with
the
base to allow
clear-
ance
for
wrench.
r
Push
the lock
button
down with
one hand
and insert the
spanner wrench into the
clamp
nut with
other
hand; then
turn until the
spindle engages with the
lock
button
(blade
stops
rotating).
Figure
2
r
Hold
onto the
plastic
housing; then
push
hard
on
the
spanner wrench
counter-clockwise to open. lf the
blade
is
very hard to remove,
use a vise
grip
to hold the
blade.
BLADE INSTALLATION:
see Fisure 3
r
Unplug the saw.
r
Align the blade driver's
slot to the
power
unit's
spindle cutout.
r
Insert new #821
Car-
bide-Tipped Blade,
#805 Masonry Bladeor
#822 Diamond Blade
onto
the the
spindle.
r
Hand tighten the
clamp
nut
and be sure
the
blade
is
centered
and
fully
seated.
r
Always re-tighten the
clamp
nut firmly with
the
spanner wrench
before use.
r
Re-adjust
and check
for
proper
height
adjustment before
further use.
HEIGHT ADJUSTMENT see Fisure 4
r
Unplug
the saw.
r
Loosen the nuts on height adjuster
about
11/zIo 2 turns
(do
not back off the
wing nuts
more than necessary).
r
Adjust the height
of
your
blade by moving the height
adjuster
up or down until desired
height
of cut
is
achieved. The inside
of
the height
adjuster
has 10 reference lines, in increments
of
slsz"
(.093"),
which isthethickness
of
the
blade.
3i,'#,fH
@{tr
No.805 MASONRY
OF
No.821
CARBIDE
No.822 DIAMOND BLADE
CLAMPNUT
________@
''ANNERWREN
"
---ry
Figure
3
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