I'm a new motorcycle rider riding a Suzuki and I didn't know what a JIS screwdriver was! Thanks to you I do now!
[0] You might have a plastic reservoir with a screw-off cap, in which case... you'll use the JIS for something else.
P.S. Congrats on the new bike! Take an advanced riding course, read Keith Code, and buy good gear and you'll have a ton of fun with it.