Installing Aa Batteries; Turning The Laser On; Checking Laser Accuracy - Stanley STHT77498-1 Manual

Installing AA Batteries

GB
Load new AA batteries in the STHT77498-1 or
STHT77499-1 laser.
Turn the laser upside down.
1.
On the bottom of the laser, lift up the latch to
2.
open the battery compartment cover
(Figure
B 1
Insert two new, high-quality, name brand AA
3.
batteries, making sure to position the - and +
ends of each battery as noted inside the battery
compartment (Figure
Push the battery compartment cover closed until
4.
it snaps in place (Figure
When the laser is not in use, keep the Power/
Transport Lock switch in the center (OFF) position
(Figure ) to save battery power.
A 2

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 the horizontal and
vertical laser beams. Either:
• Move the Power/Transport Lock switch to the
left to keep the pendulum locked and display
the cross beams in manual mode
(Figure
A 1
• Move the Power/Transport Lock switch to the
right to unlock the pendulum and display the
cross beams in self-leveling mode
(Figure
A 3
3. Check the horizontal and vertical laser beams.
• 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.
• If the laser beams flash, the laser is not level
(or plumb) and should NOT BE USED for
determining or marking level or plumb. Try
repositioning the laser on a level surface.
10
).
).
B 2
).
B 3
).
).
4.
If ANY of the following statements are TRUE,
continue with the instructions for Checking Laser
Accuracy BEFORE USING THE LASER for
a project.
• This is the first time you are using the laser
(in case the laser was exposed to extreme
temperatures).
• The laser has not been checked for accuracy
in a while.
• The laser may have been dropped.

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.
Horizontal Beam - Scan Direction
Checking the horizontal scan calibration of the
laser requires two walls at least 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.
Place the back of the laser against a wall and
facing straight ahead toward the opposing wall
(Figure ).
D 1
2. Move the Power/Transport Lock switch to the
right (Figure ) to turn the laser ON in
A 3
self-leveling mode and display the 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.