Rubbish. How do they expect their mechanics to do the warranty service?
Guess work? More likely they just don't want the trouble of ordering one
from Mitsubishi. At the very least, there will be an electronic manual
available somewhere.

Call Mitsubishi directly to see how or if you can get one. Just be aware
that you might get the "only available to dealers" response.  If there is
one available, expect to pay what Mitsubishi asks. It won't be $20.

I have my (1993/1994) workshop manuals I ordered directly from Chrysler
after dealers told me they were not available.

regards
Stewart DIBBS
www.pixcl.com/lancerproject