draining coolant
 

Im trying to drain the coolant from my 1994 CBR1000F. I have seen the temperature climb higher than normal recently and want to make sure I dont have corrosion.
I cannot find any pictures of the correct bolt. Anybody have this ? I also think i might have turned an adjustment screw near the water pump by accident maybe misread someones instructions. There is a screw that takes a flat screwdriver I think that is clamped with a ring with a bolt. Near the bolt are some small marks. Any idea what this is? Did I mess something up?
But additional can someone point out the drain plug?
Many thanks

See if you can find the shop manual, it'll make life much easier. Sometimes there are 2 bolts to drain from, my F4i has 2. A few other tips, use a torque wrench and but a kit of copper crush washers. The kit is cheap and you'll have less worries about leaky washers when you do oil changes, coolant changes, brake lines, etc...