I would advise that at the least, once a year, that one takes this front cover off and vacuums the household dust that will accumulate inside the dryer. It doesn't matter if you consistently empty the dryer filter between every load, simple household dust will accumulate in large portions inside your clothes dryer and needs to be cleaned out annually to prevent possible fires and / or potential parts failure from overheating.
The method to gain entry to the internal area and components of your Kenmore clothes dryer to clean out dust and to replace parts.
The first thing that needs to be done is to DISCONNECT ELECTRICAL POWER by either unplugging the dryer or turning off the appropriate breaker in your panel box. There will be energized parts inside of your dryer even if your dryer is not engaged to run- so please don't forget to disconnect electrical power.
Using a stiff putty knife insert it approximately 3.5" - 4" from the ends of the bottom cover depressing the locking snaps downwards. You want to shine a light in the crack and ensure the putty knife blade is above the black snapping apparatus, depress it down and open that end of the cover. Do the same thing for the other end.
Just make sure your putty knife has a stiff blade or else it will not provide the rigidity needed to dislodge and depress these locking means downwards. Once again, the knife blade needs to slide in, above these locking mechanisms. You can easily see this with a flashlight.
There are only two locking mechanisms on this Kenmore heavy duty capacity 90 series clothes dryer bottom cover. One on each end about 3.5" - 4" from the end of the panel.
It doesn't matter how much you vacuum and sweep your floors, there will undoubtedly be dust accumulated inside of your dryer housing. At one point a few years ago, my dryer was cutting off in the middle of a drying cycle. The culprit was a large portion of accumulated dust inside the dryer housing. The safety sensors were sensing fire hazard conditions due to accumulated dust upon the sensors and in the interior of the heating element housing, thus stopping the drying cycle.
So clean out your dryer at least once a year to prevent a potential house fire.
Next thing to do is to remove the dryer filter so that you can remove the motor cowl without damaging the filter.
Next using a 1/4" nut runner remove the top two screws on the cowl, one on each end.
BE CAREFUL...removing this cover because there is a fragile foam seal that seals the cover in place. Just take your time when removing the cover and you should not damage it.
vacuum and clean this cover thoroughly
Here you can see the foam seal that I mentioned earlier, now you know how to manipulate the cover during removal to prevent damage to this foam seal. Vacuum the interior area around this centrifugal fan.
Next remove the cover to gain entry inside of the heating element housing, just be extra careful and vacuum this out with a slim line attachment on your hose. It is critical that there is not any dust inside of this housing to prevent any potential fires. Use care to not dislodge any of the wires and their holding apparatus.
All vacuumed out and ready for reassembly.
90 Series Kenmore heavy duty capacity clothes dryer.
If you need to gain access to more of the interior of your dryer, please visit my post here on gaining access to more of the interior..when you arrive there just scroll down a little bit and you will discover a picture tutorial on how to gain access into the inner most portions of the interior of your dryer. To be able to remove drum (tub), dryer tub belt, motor access, etc;
If you found this post of dryer disassembly useful please