I pulled the pull cord right out of it s hole. So I unscrewed all of the screws to fix it but i cant unscrewed the fans screw ????

The back doesn't come off. On the back beside the cord hookup and beside Channel 1 Input are screws. You unscrew the two screws on either side. You then have four screws on the top of the amplifier. Unscrew those four screws and pull them out, six screws in total, then the amplifier will pull right out. You then pull the plug that attaches the speaker to the circuit board off and then you can do any kind of Maintenance or anything you want to the KB2.

once inside the fuse is directly beside the heatsink

What type of fan do you have? If it is a desk or stand fan, you need to add oil to the front bushing/armature (accessible by taking off the fan blade) and to the rear bushing. To reach the rear bushing, you need to take the motor cover off - pull the oscillator push-pull lever up until it disengages, then using a phillips screw driver, unscrew the retaining screw of the motor cover. When the cover is out, you need to unscrew 3 retaining screws on the oscillator assembly at the back of the motor. When the oscillator mechanism is out, you will see the motor armature at the back of the motor (has a threaded end). Add a little oil to the bushing of the armature. Then reassemble (reverse order - secure the oscillator assembly with 3 screws, install the motor cover and screw the back, insert the push-pull lever and you're done). Hope this may help.

The back doesn't come off. On the back beside the cord hookup and beside Channel 1 Input are screws. You unscrew the two screws on either side. You then have four screws on the top of the amplifier. Unscrew those four screws and pull them out, six screws in total, then the amplifier will pull right out. You then pull the plug that attaches the speaker to the circuit board off and then you can do any kind of Maintenance or anything you want to the KB2

Hi.

Disassembly procedure depends on the make and model. Please provide model info for the unit.

Thanks.

Overheating...

Your going to need to clean the fan/heatsink assembly..

On the cq60, this means complete disassembly of all parts and components...in order to get to the fan properly, the motherboard will need to be removed..

Remove All screws on the underside of Laptop, Remove Covers..(hard drive,RAM,Wifi).. Pull Out CDrom....Remove the 3 screws from cdrom area.....Flip Over.. Open Screen, Pull Media Strip (above Keyboard) Away from Laptop... Be carefull Here, There are Fragile ribbon cables attached to this on the left underside ..
Now Unscrew Keyboard Screws And Pull Keyboard away, THere's a ribbon cable here too attached to the motherboard,, Unlock the ribbon cable at the motherboard port(tab on each side pulls forward).. Remove Palmrest Screws.. Pull the Wifi Cables through the Motherboard upperside, Detach any plug/wires... Unscrew Screen Hinge Posts and pull screen away... Remove the 1 screw holding the rear strip of plastic---unsnap the plastic strip at back end of palmrest area... Pull palmrest away... Unscrew The Media Card Bay and the CDrom Port Board(left side)....
Remove the 2 motherboard screws on the bottom left side front...
Unplug the long cable port on the front underside of motherboard right in the middle....
Lift up the motherboard slightly.. pulling it up from the left rear side..... You will see the DC Jack Power Cable Right There Under The Motherboard... This Needs To Be Unplugged...--Pull The Motherboard Up About 2 inches and reach under to unplug the DC Jack Wire Port Plug...and the usb plug wire...

Now continue to remove motherboard
Flip Over And Remove Heatsink Fan Assembly... Unplug Fan... Disassemble Fan And Clean FAn And Heatsink Fins...

there is another t20 screw in the neck of the drum. once removed you will expose the drive clutch. soak it good with WD40 then unscrew it from the shaft. if you have all the housing screws out, you should be able to simply remove the housing to expose the pull cord assembly, screwed to housing.

For mixmaster junior, but should be relevent to many old sunbeams:

That's not the power cord going to the speed switch. You don't need to get those screws off.
To replace the cord:
Cut the old power cord near where it enters the blender.
remove the two front screws, pull off front housing.
remove 1/4" nuts found in recesses of exposed front plate.
pull speed handle out far enough to get a screwdriver under exposed front plate, and pry gently. It'll come off as it's a friction fit.
cooling fan blade is now visible, you need to remove it.
pry up gently on the teeth attaching it to the motor shaft.
Work your way around the 4 sets of teeth, it'll come off. Don't lose the two washers.
unscrew the electrical contacts.
take off the speednuts holding the brush assembly in place.
gently pull up on the brush assembly with a needle nose, until it comes out.
now remove the screws holding the motor coils in place. They're the same ones the speednuts attached to, and have hex heads you can get at with a needlenose.
once those are out, pull on the motor coils gentle, and wiggle them out of the housing.
You'll see the stub of the old power cord at the back of it.
Get a round replacement wire of the right diameter, thread it through the cord hole in the blender, and connect it up to the coils.
-I had to drill the power cord hole 1/16" larger than it was to get a modern cord to fit through it.
On the stub of the old cord, you'll see a metal ring which serves to anchor the cord in blender body. remove it (screwdriver + needlenose and pry), and attach to new cord at the righ position.
Put everything back together, being careful not to bust the carbon brushes.
Congrats, you now have a functional blender with a cord that won't try to electrocute you.

http://www.insidemylaptop.com/clean-cooling-module-acer-aspire-3620/

cleaning the tower fan consists of this, i took the time to figure it out! unscrew top two screws on back of tower fan. then on bottom of tower fan is a screw cover,(pin size hole in middle of circle) pull cover off. unscrew hidden screw, and now with a little force it should pop right off. it exposes the filter and all it interior. front screen does not come off. oh yeah,your welcome!

GE side x side GSS22SGMC stainless steelJust fixed my own problem of jammed ice door. 1. pull the light switch plate off (just under the front bottom edge, push through the holes, pull) 2. unscrew the dispenser assembly, 4 screws, pull the unit out  3. WR62X10020 SOLENOID is in the upper right, unplug the black wires from the board. 4. unscrew the right screw from the door-stop assembly (above the ice door)- pull the plastic out of the solenoid piston 4. unscrew solenoid, 3 screws, from back 5. pull the piston, scrape-sand-file off all rust, then lube with oil 6. scrape off rust from inside,  solenoid with shoving steel wool-file-degreaser to get off rust, then lube 7. reassemble, WORKS!! 8. save 35.00 for new solenoid 9. save repair cost of whole new door (happened!) good luck