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1
Work
Clamp
Tools
Needed:
Connect
work
clamp
to
a
clean,
paint-free
location
on
workpiece,
as
close
to
weld
area as
possible.
Use
wire
brush
or
sandpaper
to
clean
metal
at
weld
joint
area.
Use
chipping
hammer
to
remove
slag
after
welding.
sb4.1
2/93
Figure
4-3.
Work
Clamp
1
Amperage
Control
Use
control
to
select
weld
amper
age.
Engine
must
be
running
at
weld/power
speed
to
attain
full
weld
output.
Control
may
be
ad
justed
while
welding.
1
2
Electrode
Scale
Scale
shows
recommended
elec
trode
diameter
for
weld
amperage.
3
Amperage
Scale
Numbers
in
scale
are
welding
amperes.
2
3
Ret.
ST-157
883-A
Figure
4-4.
Amperage
Control
1
Fuel
Shutoff
Valve
Open
valve
before
starting
engine.
Close
valve
when
unit
is
not
in
use
or
during
transport.
2
Throttle
Control
Lever
Use
lever
to
start
and
stop
engine
and
select
engine
speed.
To
start
engine,
move
lever
to
Run.
3
Choke
Control
Lever
Use
lever
to
regulate
carburetor
air/fuel
mixture.
Move
choke
lever
to
right
(choke
on)
if
starting
a
cold
engine.
If
starting
a
warm
engine,
move
choke
lever
to
left
(choke
off).
4
Starter
Handle
Pull
starter
handle
with
quick,
smooth
motion.
After
engine
warms,
move
choke
lever
to
left.
Keep
throttle
lever
in
Run
for
weld/
auxiliary
power.
Move
lever
to
Idle
for
idle
speed.
Stop
unit
by
moving
lever
to
Stop.
S-0690
/
Ret.
ST-161
478
Figure
4-5.
Engine
Controls
OM-160
518
Page
8