After removing the spool and handle remove the rear cover.
The is done by backing out the bottom screw on the cover and the top screw on the side plate of the reel as in the first picture.
Remove the remaining 2 screws from the side cover keeping track of them, they are 2 different styles and will only go back in from where the came. You now can remove the side cover and drive gear, picture 2.
Remove the cover bearing and gear bearing. These come out with ease. The third pic is the cover bearing, the gear bearing is on the opposite side, pictures 3 and 4.
I now spray the inside of the reel with a grease cleaner, I prefer WD-40 because it is always around but I know there is better stuff on the market. Make sure to clean the bearings also. Wipe everything clean and let dry before greasing.
Once dry repack your bearings with the hot sauce grease and apply the grease to your gears, pictures 5 and 6. Make sure when you put the bearings back in from where they came out of. They are 2 different bearings.
After reassembling I use the oil on the main shaft, bail pivot points and the line roller bearing, pictures 7-10. The reel can be torn down much further but this is the basics for reel maintenance.
You will never have a problem with your reels getting stiff in extreme cold weather again after getting rid of the out of the box grease and replacing with the hot sauce. Hope this helps!