Look here: http://www.startekinfo.com/StarTek/outside/8001/?requestedDocId=8001

The 107 manual is only 19 bucks! I don't know what is on it but the CD manuals used to cost over $100 and they had most of the service manuals taken from the books including the maintenance ,manual, engine manual, climate cont manual, electrical troubleshooting manuals, and chassis service manual. For that price I would suggest it as a good background.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician