How to disassemble lasko hassock floor fan
I'm assuming you want to open the fan up to give it a thorough cleaning. This is how I got one open. First things first, make sure it's unplugged. No need to risk zapping yourself of accidentally turning it on when your fingers are in range of the fan blade...
Turn the fan upside down. There are four very long Phillips screws concealed by long plastic sleeves that cover the shafts of the screws, with the ***** heads covered by the rubber feet at the bottom of the unit. Pop out the rubber feet, then loosen the screws (there will likely be an alarming snap when they break loose). The two-piece top of the unit will come loose. You can then remove the screws and the plastic sleeves that hide the screws.
Turn the unit right side up and remove the fan blade. The nut holding the blade on is reverse thread, so "lefty loosy, righty tighty" will not apply--turn the nut clockwise to loosen. Remove the nut and lock washer, then pull the blade from underneath the hub (it'll take a bit of force to pop it off.
The wire from the motor to the speed control switch connects the base to the cylindrical center portion of the unit. To separate the center portion from the base, pull the knob off of the shaft of the switch and remove the ***** holding it in place. The switch can then be disconnected from the center piece. I'd put the ***** back into the switch to keep it from disappearing.
The motor can be removed from the base by removing the three screws holding it to the base from underneath, but unless you're looking to replace the motor, you shouldn't need to do this.
Put it back together by reversing the disassembly process.