Stanley STHT77498-1 Original Instructions

6
ENGLISH
Turning the Laser On
1. Place the laser on a smooth, flat, level surface, with the
laser facing straight ahead toward the opposing wall
(0ºposition).
2. Turn the laser ON to display a horizontal laser beam. Either:
a. Move the Power/Transport Lock switch to the left to
keep the pendulum locked and display the beams in
manualmode (FigureA1).
b. Move the Power/Transport Lock switch to the right
to unlock the pendulum and display the beams in
self-leveling mode (FigureA3).
3. Press (FigureA4) once to display a horizontal laser beam, a
second time to display a vertical beam, and a third time to
display both the horizontal and verticalbeams.
4. Check the laserbeams.
a. If the laser is tilted so much that it cannot self-level
(>4°), or the laser is not level in manual mode, the laser
beams willflash.
b. If the laser beams flash, the laser is not level (or
plumb) and should NOT BE USED for determining or
Horizontal Beam - Scan Direction
Checking the horizontal scan calibration of the laser requires
two walls at least 30' (9m) 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. Place back of the laser against a wall and facing straight
ahead toward the oppsing wall (FigureD1).
2. Move the Power/Transport Lock switch to the right
(FigureA3) to turn the laser ON in self- leveling mode and
display a horizontal and verticalbeams.
3. Turn the laser 45º counter-clockwise so that the right-most
end of the laser line is displayed on thewall.
4. Mark a on the center of the beam on thewall.
5. Turn the laser 90º clockwise so that the left-most end of the
laser line is displayed near a (FigureD2).
6. Mark d on the center of the beam on thewall.
7. Measure the vertical distance between a and b .
8. If your measurement is greater than the Allowable Distance
Between a and b for the corresponding Distance Between
Walls in the following table, the laser must be serviced at an
authorized servicecenter.
Distance Between
Walls
Allowable Distance Between
a and b
30' (9 m) 15/32" (12 mm)
40' (12 m) 9/16" (14.4 mm)
50' (15 m) 23/32" (18 mm)
Checking Laser Accuracy
The laser tools are sealed and calibrated at the factory. It is
recommended that you perform an accuracy check prior
to using the laser for the first time (in case the laser was
exposed to extreme temperatures) and then regularly to
ensure the accuracy of your work. When performing any of
the accuracy checks listed in this manual, follow these
guidelines:
• Use the largest area/distance possible, closest to the
operating distance. The greater the area/ distance, the
easier to measure the accuracy of thelaser.
• Place the laser on a smooth, flat, stable surface that is
level in bothdirections.
• Mark the center of the laserbeam.
Battery Safety

WARNING: Batteries can explode, or leak, and can
cause injury or fire. To reduce this risk:
• Carefully follow all instructions and warnings on the
battery label andpackage.
• Always insert batteries correctly with regard to
polarity (+ and –), as marked on the battery and
theequipment.
• Do not short batteryterminals.
• Do not charge disposablebatteries.
• Do not mix old and new batteries. Replace all batteries
at the same time with new batteries of the same
brand andtype.
• Remove dead batteries immediately and dispose of
per localcodes.
• Do not dispose of batteries infire.
• Keep batteries out of reach ofchildren.
• Remove batteries when the device is not inuse.
Installing AA Batteries
Load new AA batteries in the STHT77498-1 or
STHT77499-1laser.
1. Turn the laser upsidedown.
2. On the bottom of the laser, lift up the latch to open the
battery compartment cover (FigureB1).
3. Insert four new, high-quality, name brand AA batteries,
making sure to position the - and + ends of each battery as
noted inside the battery compartment (FigureB2).
4. Push the battery compartment cover closed until it snaps in
place (FigureB3).
When the laser is not in use, keep the Power/ Transport
Lock switch in the center (OFF) position (FigureA2) to save
batterypower.
marking level or plumb. Try repositioning the laser on a
levelsurface.
5. If ANY of the following statements are TRUE, continue with
the instructions for Checking Laser Accuracy BEFORE
USING THE LASER for aproject.
a. This is the first time you are using the laser (in case
the laser was exposed to extreme temperatures).
b. The laser has not been checked for accuracy in
awhile.
c. The laser may have been dropped.

Stanley STHT77498-1 Specifications

General

Brand	Stanley
Model	STHT77498-1
Category	Laser Level
Language	English