Maintenance; Trigger Lock-On/Making Cut; Special Cutting Techniques/Plunge Cutting; Selecting Speed/Starting/Stopping Tool - Milwaukee 6278-20 Operator's Manual

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Using the shoe cover
The shoe cover is used to prevent marring and
scratching of the workpiece surface. To attach the
shoe cover:
1. Unplug tool.
2. Hook the front of the cover
over the steel shoe.
3. Snap the rear of the shoe
cover over the back of the
shoe. Be sure both sides
are snapped in place.
4. When the shoe cover is not
needed, remove it by pull-
ing the tabs on rear of the shoe cover down. Un-
hook the front of the shoe cover and remove.
Using the Dust Collection Attachment
1. Unplug tool.
2. To install, line-up the small end of the dust col-
lection attachment with the curved area at the
back of the shoe. Slide into place. The clip on
the top of the attachment will slide into the slot
on the underside of the jigsaw motor housing.
3. To remove, press up on the clip and slide at-
tachment away from jigsaw.
NOTE: Do not use the anti-splinter device or
dust collection attachment when making bevel/
angle cuts.
WARNING
To reduce the risk of injury,
always unplug tool before attaching
or removing accessories or making adjust-
ments. Use only specifi cally recommended
accessories. Others may be hazardous.
WARNING
To reduce the risk of injury,
wear safety goggles or glasses with side
shields.
Selecting Speed
Rotate the speed selector dial to the desired maxi-
mum speed (A through F). Select "A" for a maxi-
mum speed of 500 strokes per minute. Select "F" for
a maximum speed of 3000 strokes per minute.
Use lower speeds for materials such as plastics
and laminates. Also, use lower speeds for hard
metals.
Use higher speeds for materials such as wood and
soft metals (aluminum, copper, brass, etc.).
Adjusting the Orbital Action
The amount of orbital action
may be adjusted with the
Material
orbital action selector lever.
Wood
In general, a large orbital ac-
Metal
tion (4) should be used with
Aluminum
soft materials and a no or-
Plastic
bital action (0) should be used
Smooth Cut
with hard materials. When
a smooth cut is required, no
orbit (0) should be used.
Adjusting the Shoe
The shoe may be tilted up to 45° in either direction.
To set a tilt angle for bevel/angle cuts:
1. Unplug tool.
2. Remove anti-splinter
device and dust collec-
tion attachment.
3. Loosen the shoe ad-
justment lever and
pull the base forward
slightly until the detents
are not engaged.
4. Tilt the shoe to the
required preset angle
(0°, 15°, 30°, or 45°).
5. Push the shoe into
the detent and tighten
the shoe adjustment
lever.
6. To set an angle other than 0°, 15°, 30°, or 45°,
loosen the shoe adjustment lever and pull the
base forward slightly until the detents are not
engaged. Set the desired angle and tighten the
shoe adjustment lever without engaging a detent.
Make a test cut to verify the angle.

OPERATION

Starting and stopping the tool
1. To start the tool, grasp the handle fi rmly and pull
the trigger.
2. To vary the speed, increase or decrease pres-
sure on the trigger. The further the trigger is
pulled, the greater the speed, up to the maximum
set by the speed selector dial.
3. To stop the tool, release the trigger. Allow the tool
to come to a complete stop before removing the
blade from a partial cut or laying the tool down.
WARNING
To reduce the risk of injury,
always ensure that the trigger lock-on is
in the "off" position before plugging in tool.
Trigger Lock-On
The trigger lock-on button holds the trigger in the
ON position for continuous use.
1. To lock-on the trigger, pull the trigger and press
in the lock-on button. Release the trigger.
2. To unlock the trigger, pull the trigger and re-
lease.
WARNING
To reduce the risk of injury,
Orbital
do not start the tool with the blade con-
Action
0-4
tacting the workpiece.
0-1
Making the Cut
0-1
1. Set the orbital action according the material to
0-2
be cut.
0
2. Position the tool with the front part of the shoe
on the workpiece and start the tool.
3. Hold the shoe fi rmly against the workpiece and
guide the tool along the desired cutting line. Do
not feed into the work too hard, light pressure on
the saw blade will achieve the optimum cutting
speed.
6
Special Cutting Techniques
1. Straight cuts — To obtain a perfectly straight
cut, clamp a strip of wood as a guide along the
workpiece or use the rip guide (accessory).
2. Bevel cuts — adjust the shoe to the correct angle
(see Adjusting the Shoe).
3. Cutting Sheet Metal — sheet metal may vibrate
when being cut. To minimize vibration, clamp the
workpiece to a wood base.
WARNING
To reduce the risk of explo-
sion, electric shock and property damage,
always check the work area for hidden gas
pipes, electrical wires or water pipes when
making blind or plunge cuts.
Plunge Cutting
Plunge cuts can be made into soft materials without
a pre-drilled hole. Harder materials require a starter
hole with a diameter slightly over the width of the
blade. To make a plunge cut:
1. Set the orbital action
selector lever to 0.
2. Make sure nothing
below the intended
cut area will be dam-
aged.
3. Without turning the
tool on, place the front
edge of the shoe sol-
idly on workpiece.
4. Align the blade with
the intended cut line,
but keep it above the
workpiece.
5. Using the front edge of the shoe as a pivot, turn
on the tool and gradually lower the blade into the
workpiece.
6. When the shoe is fl at against the workpiece,
normal cutting may take place.
ACCESSORIES
WARNING
To reduce the risk of injury,
always unplug the tool before attaching or
removing accessories. Use only specifi cally
recommended accessories. Others may be
hazardous.
For a complete listing of accessories refer to your
MILWAUKEE Electric Tool catalog or go on-line
to www.milwaukeetool.com. To obtain a catalog,
contact your local distributor or a service center.

MAINTENANCE

WARNING
To reduce the risk of injury,
always unplug your tool before perform-
ing any maintenance. Never disassem-
ble the tool or try to do any rewiring on
the tool's electrical system. Contact a
MILWAUKEE service facility for ALL repairs.
Maintaining Tools
Keep your tool in good repair by adopting a regular
maintenance program. Before use, examine the
general condition of your tool. Inspect guards,
switches, tool cord set and extension cord for
damage. Check for loose screws, misalignment,
binding of moving parts, improper mounting, bro-
ken parts and any other condition that may affect
its safe operation. If abnormal noise or vibration
occurs, turn the tool off immediately and have the
problem corrected before further use. Do not use a
damaged tool. Tag damaged tools "DO NOT USE"
until repaired (see "Repairs").
Under normal conditions, relubrication is not neces-
sary until the motor brushes need to be replaced.
After six months to one year, depending on use,
return your tool to the nearest MILWAUKEE service
facility for the following:
• Lubrication
• Brush inspection and replacement
• Mechanical inspection and cleaning (gears,
spindles, bearings, housing, etc.)
• Electrical inspection (switch, cord, armature,
etc.)
• Testing to assure proper mechanical and electri-
cal operation
WARNING
To reduce the risk of injury,
electric shock and damage to the tool, never
immerse your tool in liquid or allow a liquid
to fl ow inside the tool.
Cleaning
Clean dust and debris from vents. Keep the tool
handles clean, dry and free of oil or grease. Use
only mild soap and a damp cloth to clean your tool
since certain cleaning agents and solvents are
harmful to plastics and other insulated parts. Some
of these include: gasoline, turpentine, lacquer thin-
ner, paint thinner, chlorinated cleaning solvents,
ammonia and household detergents containing
ammonia. Never use fl ammable or combustible
solvents around tools.
Repairs
If your tool is damaged, return the entire tool to the
nearest service center.
7

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