Here's what you need.
1. Small flat blade screwdriver
2. Needle nose pliers
3. Staple gun and staples 1/4 or 3/8 will work
**Buy or rent an electric stapler**
3. Hair dryer
**Not required but it helps**
Clean you seat, just don't get it too wet (foam will swell)
Check fit to make sure you have the right cover before taking off the old one!
Remove staples

Check your foam for damage,
repair with contact cement
Start with the top (tank) area of seat, put in a couple of staples
Work your way down the sides pulling tight and stapling, if you have a few wrinkles, remove the staples in that area and smooth out. This is where a hair dry comes in handy. Warm up the seat cover, stretch it into place, and staple it. As it cools, the material will shrink making for a nice tight fit.
***be careful not to heat it up so much you melt the plastic***
When you get most of the way done put the seat on the bike and check fit, the tank may pull or push the seat and cause a wrinkle
Hear again, remove a few staples and stretch and re-staple
When you done you should not be able to pinch up the cover
Install seat, it should look smooth and tight
Now go Ride !