S as in "sun"
K as in "sky" (the "ch" sounds like a "k")
I as in "machine"
v as in "van"
ə (schwa) as in "about" (this is a very short, unstressed vowel sound)
n as in "sun"
Therefore, the pronunciation is roughly "SKAI-vən".
Keep in mind that the "v" is pronounced more like an English "w" when it comes at the end of a word.