A CD-ROM of most if not all factory manuals for each model, including yours, is available from Mercedes.

The CD is only $20USD.

I have both the W116 and W114/W115 versions and refer to them often. Search for my post about books.

Michael

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Usta haves '69 250/8, '76 280C, 1971 250C 114.023, 1976 450SEL 116.033
Current have, 1983 300SD 126.120