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Thank you for purchasing this high-accuracy dual-slope horizontal
rotary laser. This laser is ideal for critical level measurements, where
accuracy can’t be compromised.
This tool features:
• Class IIIa long-range laser
• Dual-slope for grading
• Tilt indicator
• Remote control
Quick Start Guide: Rotary Laser 40-6535 • 40-6541
GETTING STARTED
1. Insert batteries into the laser and the remote control.
2. Most functions of the laser require the remote control for
operation. Note: The laser will stop receiving remote signals after
30 minutes of inactivity. Press on the laser to re-enable communication with the remote.
3. Tap to power on the laser. The laser will self-level and rotate.
The laser will flash if out of its self-leveling range. If this occurs,
bring the laser within 5° of level and restart it.
4. Tap to disable or enable the tilt indicator. See the Tilt Indicator
section for more information.
5. To power o the laser, tap . The laser will turn o and enter
sleep mode for 30 minutes. It can be woken with the remote
control or the laser keypad. After 30 minutes, it will stop receiving
remote control signals.
Typical Applications Include:
• Setting and leveling concrete
formwork
• Grading
• Concrete flatwork
www.johnsonlevel.com/manuals
We want to get you up and running as quickly as possible - but this quick start guide is not a replacement for reading and understanding your
operator’s manual! For complete safety & operating instructions, refer to the operator’s manual included with your rotary laser, or scan the QR code.
BUTTON GUIDE
Most functions of this laser are accessed via the remote control - this
minimizes disturbances to the laser during operation.
The power and tilt indicator buttons can be accessed from the laser.
POWER
SLOPE AXIS
TILT INDICATOR
ENTER BUTTON
SLOPE UP/DOWN
TILT INDICATOR
The tilt indicator disables the laser if it’s bumped while operating,
preventing you from taking inaccurate measurements.
To enable the tilt indicator:
1. With the laser powered on, press .
2. The Tilt Mode LED will flash for 30 seconds. During this time, the
laser will automatically re-level and restart if bumped. This gives
you time to make any necessary final adjustments to the laser.
3. After 30 seconds, the Tilt Mode LED will remain on, indicating Tilt
Mode is active. Any disturbance to the laser will cause it to stop
spinning and flash to alert you.
4. Reset the laser after a tilt event or exit tilt mode by pressing .
For a video quick start guide,
scan the QR code to the right:
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www.johnsonlevel.com/manuals
We want to get you up and running as quickly as possible - but this quick start guide is not a replacement for reading and understanding your
operator’s manual! For complete safety & operating instructions, refer to the operator’s manual included with your rotary laser, or scan the QR code.
DUAL-AXIS SLOPE MODE
Dual-axis slope mode angles the laser beam in X and Y directions, for
example when sloping a concrete slab towards an edge or corner.
When in dual-slope mode, the tilt indicator will not be functional.
Ensure the laser is not bumped while operating in dual-slope mode.
If desired, you can slope only one axis in dual-slope mode - the other
axis will remain fixed level, but if the laser is bumped, it will not automatically re-level.
To enter dual-slope mode:
1. Tap on the remote to start dual-slope mode.
2. The X axis indicator will blink. Use and to adjust the slope in
the X axis. Tap for minor adjustments, or press and hold for larger
adjustments.
3. Tap on the remote to toggle axes and set slope in the Y
direction. The Y axis indicator will blink. Use and to adjust
the slope in the Y axis.
4. If the laser exceeds its slope range, the rotation will stop, the laser
will flash, and the alarm will sound. If this happens, reduce the
slope in either axis until the laser resumes operation.
5. Exit dual slope mode by holding for 3 seconds. The laser will
self level and begin to spin horizontally.
Pro Tip: To set a specific slope, use a detector and grade rod. For
example to set 1” per 10’ slope:
1. Level the laser, and let it spin in horizontal mode.
2. Mark an orthogonal point 10’ from the rotary.
3. Find grade with a grade rod. Lower the detector 1”.
4. Adjust laser slope until the detector reads “on-grade”.
5. Set detector height so that it reads “on-grade” when positioned
immediately next to the rotary.
6. Don’t make any additional detector height adjustments - The
bottom of the grade rod will always read the proper ground level
at all locations, consistent with a 1:120 or 1”/10’ slope.
USING A LASER DETECTOR
Laser detectors help you locate the laser beam when you otherwise
can’t see it with your naked eye, such as in outdoor conditions, high
ambient light, and long distances.
Models 40-6535 and 40-6541 both come with Johnson’s dual sided
laser detector model 40-6715. These models are also compatible with
accessory detectors such as Johnson’s 40-6590 machine mount
detector for mounting to skid steers, excavators, and other similar
equipment.
40-6715 DETECTOR OPERATION GUIDE
1. Power on the detector by pressing .
2. Adjust the sound level and backlight using and .
3. Press to set the accuracy. Higher accuracy makes for more
accurate laser readings, lower accuracy makes it quicker to locate
the beam when accuracy is less critical (as in rough excavation).
4. With the detector window facing the rotary laser, move the
detector up and down until it crosses the laser beam. It will begin
to beep when it locates the beam.
5. Use the arrow on the LCD as a guide - to find grade, move the
detector in the direction indicated by the arrow.
6. When the arrow turns into a solid line, and the beeping turns into a
solid tone, you have located grade.
BACKLIGHT
POWER
VOLUME
ACCURACY
DETECTOR WINDOW
DETECTOR LCD
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