Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 594Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 594

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SUPPLEMENT TO SERVICE MANUAL NUMBER 24
1 Remove and discard sealing O-ring from IAC valveClean sealing surfaces, pintle valve seat, and air passage with carburetor cleaner to remove carbon depos