Hello.
First, turn the power off to the dryer or remove the power cord from the AC outlet. Next, locate the 2 screws in-between the upper and lower front panels and at the bottom front of the dryer--there will be 2-3 screws, usually 1/4 inch hex head, and remove them--use a magnetic nut driver, it makes it a
whole lot easier! (note:sometimes, to replace the panel, you have to push up on the bottom of the panel
hard to get the screw holes to line up again.) Set the panel aside. Open the dryer door and remove the lint screen from the holder. Close the door. Next, notice the blower housing cover, pic 3, #45, lower left corner. There should be 3-4 screws holding the cover to the blower housing. Remove the screws and cover--
use caution--most metal edges inside a dryer are
unfinished and
razor sharp--akin to putting your hand inside a box of razor blades(ask me how I know this, lol). Remove any lint build-up inside the cover with a vacuum. Again, using a vacuum, suck out any lint from inside the blower housing and fan as best you can.
Take care to not damage the fan blades! Now, try to remove as much lint build-up as you can with the vacuum. Be especially careful when vacuuming around the mouth of the heater element. Do the best you can. At this point, re-assemble the dryer using the reverse of assembly. If there is still a lot of lint inside the cabinet and you can't reach it--
STOP! In order to remove the remaining lint requires removal of the front bulkhead(large metal plate that supports the front of the drum), drum belt, and drum from the cabinet. This is
INVOLVED and can be very difficult to re-assemble if you have never done it before. Call for service. I hope I helped you!