OUT OF TILT RANGE INDICATOR (FIG. 3, 4)
The lasers are designed to self-level. If the laser has been tilted so much that it cannot level itself (average > 4° tilt),
it will flash the laser beam (Fig. 4). The flashing beam indicates the tilt range has been exceeded and IS NOT LEVEL
(OR PLUMB) AND SHOULD NOT BE USED FOR DETERMINING OR MARKING LEVEL (OR PLUMB). Try repositioning
the laser on a more level surface.
USING THE LASERS WITH ACCESSORIES
The	lasers	are	equipped	with	a	1/4"	x	20	female	thread	on	the	bottom	of	the	unit.	This	thread	is	to	accommodate	
current or future D
WALT accessories. Only use D
e
the directions included with the accessory.
CAUTION: The use of any other accessory not recommended for use with this tool could be hazardous.
If you need any assistance in locating any accessory, please contact D
Road, Baltimore, MD 21286 or call 1-800-4-D
at www.dewalt.com.
USING THE PIVOT BRACKET (FIG. 5)
The lasers have a magnetic pivot bracket (E) permanently attached to the units. This bracket allows the unit to
be mounted to any upright surface made of steel or iron. Common examples of suitable surfaces include steel
framing studs, steel door frames and structural steel beams. The bracket also has a keyhole slot (F) allowing
the unit to be hung from a nail or screw on any kind of surface. Position the laser and/or wall mount on a stable
surface. Serious personal injury or damage to the laser may result if the laser falls.
USING THE LASER WITH THE WALL MOUNT (FIG. 5)
The DW0860 Laser Wall Mount offers more mounting options for the DW087 and DW088 lasers. The wall mount
has a clamp (G) at one end which can be fixed to a wall angle for acoustic ceiling installation. At the other end of
the wall mount is a screw hole (H), allowing the wall mount to be attached to any surface with a nail or screw.
Once the wall mount is secured, its steel plate provides a surface to which the magnetic pivot bracket can be
attached. The position of the laser can then be fine-tuned by sliding the pivot bracket up or down on the wall
mount.
LEVELING THE LASERS
As long as the lasers are properly calibrated, the lasers are self-leveling. Each laser is calibrated at the factory to
find level as long as it is positioned on a flat surface within average ± 4° of level. No manual adjustments must
be made.
MAINTENANCE
	 •	 To	maintain	the	accuracy	of	your	work,	check	the	laser	often	to	make	sure	it	is	properly	calibrated.	See	
Field Calibration Check.
	 •	 Calibration	 checks	 and	 other	 maintenance	 repairs	 may	 be	 performed	 by	 D
service centers.
	 •	 When	not	in	use,	store	the	laser	in	the	kit	box	provided.	Do	not	store	your	laser	at	temperatures	below	-5˚F	
(-20˚C)	or	above	140˚F	(60˚C).
	 •	 Do	not	store	your	laser	in	the	kit	box	if	the	laser	is	wet.	The	laser	should	be	dried	first	with	a	soft	dry	cloth.
Cleaning
Exterior plastic parts may be cleaned with a damp cloth. Although these parts are solvent resistant, NEVER use
solvents. Use a soft, dry cloth to remove moisture from the tool before storage.
Field Calibration Check
CHECKING ACCURACY – HORIZONTAL BEAM, SCAN DIRECTION (FIG. 6)
Checking	the	horizontal	scan	calibration	of	the	laser	requires	two	walls	30'	(9m)	apart.	It	is	important	to	conduct	a	
calibration check using a distance no shorter than the distance of the applications for which the tool will be used.
1. Attach the laser to a wall using its pivot bracket. Make sure the laser is facing straight ahead.
	 2.	Turn	on	the	laser's	horizontal	beam	and	pivot	the	laser	approximately	45˚	so	that	the	right-most	end	of	
the	laser	line	is	striking	the	opposing	wall	at	a	distance	of	at	least	30'	(9m).	Mark	the	center	of	the	beam	
(a).
	 3.	Pivot	the	laser	approximately	90˚	to	bring	the	left-most	end	of	the	laser	line	around	to	the	mark	made	in	Step	
2. Mark the center of the beam (b).
4. Measure the vertical distance between the marks.
5. If the measurement is greater than the values shown below, the laser must be serviced at an authorized
service center.
Distance
Between Walls
	
30'	(9m)	
	
40'	(12m)	
	
50'	(15m)	
CHECKING ACCURACY – HORIZONTAL BEAM, PITCH DIRECTION (FIG. 7)
Checking	 the	 horizontal	 pitch	 calibration	 of	 the	 laser	 requires	 a	 single	 wall	 at	 least	
30'	 (9m)	 long.	 	 It	 is	 important	 to	 conduct	 a	 calibration	 check	 using	 a	 distance	 no	 shorter	 than	 the	
distance of the applications for which the tool will be used.
1. Attach the laser to one end of a wall using its pivot bracket.
	 2.	Turn	on	the	laser's	horizontal	beam	and	pivot	the	laser	toward	the	opposite	end	of	the	wall	and	approximately	
parallel to the adjacent wall.
	 3.	Mark	the	center	of	the	beam	at	two	locations	(c,	d)	at	least	30'	(9m)	apart.
4. Reposition the laser to the opposite end of the wall.
	 5.	Turn	on	the	laser's	horizontal	beam	and	pivot	the	laser	back	toward	the	first	end	of	the	wall	and	approxi-
mately parallel to the adjacent wall.
6. Adjust the height of the laser so that the center of the beam is aligned with the nearest mark (d).
7. Mark the center of the beam (e) directly above or below the farthest mark (c).
8. Measure the distance between these two marks (c, e).
9. If the measurement is greater than the values shown below, the laser must be serviced at an authorized
service center.
Distance
Between Walls
	
30'	(9m)	
	
40'	(12m)	
	
50'	(15m)	
CHECKING ACCURACY – VERTICAL BEAM (FIG. 8)
Checking the vertical (plumb) calibration of the laser can be most accurately done when there is a substantial
amount	of	vertical	height	available,	ideally	30'	(9m),	with	one	person	on	the	floor	positioning	the	laser	and	
another person near a ceiling to mark the position of the beam. It is important to conduct a calibration check
using a distance no shorter than the distance of the applications for which the tool will be used.
	 1.	Start	by	marking	a	5'	(1.5m)	line	on	the	floor.
	 2.	Turn	on	the	laser's	vertical	beam	and	position	the	unit	at	one	end	of	the	line,	facing	the	line.
3. Adjust the unit so its beam is aligned and centered on the line on the floor.
4. Mark the position of the laser beam on the ceiling (f). Mark the center of the laser beam directly over the
midpoint of the line on the floor.
5. Reposition the laser at the other end of the line on the floor. Adjust the unit once again so its beam is aligned
and centered on the line on the floor.
6. Mark the position of the laser beam on the ceiling (g), directly beside the first mark (f).
7. Measure the distance between these two marks.
8. If the measurement is greater than the values shown below, the laser must be serviced at an authorized
service center.
Ceiling
Height
	
8'	(2.5m)	
	
10'	(3.0m)	
	
14'	(4.0m)	
	
20'	(6.0m)	
	
30'	(9.0m)	
WALT accessories specified for use with this product. Follow
e
WALT Industrial Tool Co., 701 East Joppa
e
WALT (1-800-433-9258). See our catalog on the World Wide Web
e
Allowable Distance
Between Marks
1/8"	(3.0mm)
5/32"	(4.0mm)
7/32"	(5.0mm)
Allowable Distance
Between Marks
1/4"	(6.0mm)
5/16"	(8.0mm)
13/32"	(10.0mm)
Allowable Distance
Between Marks
5/32	(3,5	mm)
3/16	(4,5	mm)	
1/4	(6,0	mm)	
3/8	(9,0	mm)	
1/2	(13	mm)
–
FIG. 1
A
+
FIG. 3
>4° {
AVERAGE
EN MOYENNE
PROMEDIO
WALT
e
FIG. 5
E
FIG. 6
Step 2 / Étape 2 / Paso 2
Step 2 / Étape 2 / Paso 2
FIG. 7
Step 1, 2 / Étape 1, 2 / Paso 1, 2
c
Step 3 / Étape 3/ Paso 3
c
Step 8
Étape 8
Paso 8
e
Step 7 / Étape 7 / Paso 7
FIG. 8
Step 7
Étape 7
Paso 7
g
f
FIG. 2
DW087
DW088
+
C
FIG. 4
FLASHING
CLIGNOTANT
DESTELLA
DW0860
F
F
G
H
Step 4 / Étape 4/ Paso 4
b
Step 3 / Étape 3 / Paso 3
a
90˚
Step 3 / Étape 3 / Paso 3
45˚
Step 1 / Étape 1 / Paso 1
30' (9m)
Step 3 / Étape 3/ Paso 3
Steps 4, 5 / Étapes 4, 5 / Pasos 4, 5
Step 6 / Étape 6 / Paso 6
Step 6 / Étape 6 / Paso 6
g
f
Step 4
Étape 4
Paso 4
Steps 2, 3
Étapes 2, 3
Pasos 2, 3
5' (1.5m)
Step 1 / Étape 1 / Paso 1
E
D
FLASHING
CLIGNOTANT
DESTELLA
H
DW0860
d
d
Step 5
Étape 5
Paso 5