'93 929

Hey There, Well my girlfriends '93 929 needs a new starter. I've never done it before, but am slightly mechanical and think I can do it myself, so thought I'd look online for some good schematics on the engine. Can somebody steer me towards a collection of good (and free!) online schematics? Any advice from you pro's would be appreciated also. shop wants $500.00 but we're living paycheck to paycheck, so saving money is important here.
Thanks!