Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 189Get this manual

Mercury Mercruiser GM V-8 305 CID / 350 CID Engines Service Manual., Page 189

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SERVICE MANUAL NUMBER 24
NOTE: When servicing only one cylinder's rocker arms, bring that cylinder's piston up to TDC before removing rocker armsWhen servicing all rocker arms, bring No1 piston