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Old 01-27-2002, 11:19 AM
kevin carey's Avatar
kevin carey kevin carey is offline
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Join Date: Dec 2001
Location: CA
Posts: 10
Question '91 350sd valve adjustment

How often should the valves on this 603 engine be adjusted? I bought her at 106k and now have 115k. I didn't receive any records or manuals and the owners manual I ordered from MB is elementry, i,e. how to turn on your lights, tire pressure etc. There is also a switch in the back of the glove box and I don't know it's purpose. Can anyone enlighten me to its function?
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