Manual - Stanley Fatmax Stud Finder 400
To keep your FatMax running like new:
The manual stresses that bad calibration = bad results. Follow these "Golden Rules":
This is where 90% of users mess up.
Note: If you calibrate over a stud, the tool will beep non-stop. Move it to a blank spot, release the button, and try again.
Q: Do I need a separate manual for thick walls?
A: No. The standard manual states the device works up to 3/4″. For thicker walls, use the “business card” hack described above. stanley fatmax stud finder 400 manual
Q: My unit shows “stud” but there’s an outlet – what now?
A: Outlets are typically nailed to studs. Scan 1 inch to either side of the outlet for the actual stud center.
Q: Can I use this on ceilings?
A: Yes, but calibration is trickier. Calibrate on the wall first, then move to the ceiling without releasing the power button. To keep your FatMax running like new:
Q: Where can I download a PDF of the Stanley FatMax 400 original manual?
A: Visit Stanley Tools’ official website → Support → Manuals → Search “S160400”. Avoid third-party sites with outdated versions.
