Just clean the dirt off and stick it back in. The adjustment will be where ever it was when you pulled it. Just make the adjustment that you had originally intended and put the cap back on (it doesn't matter where the lever is put , what matters is how far you have turned what the lever plugs into). No big deal.

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