Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 48Get this manual

Mercury Mariner Outboards 2.2 / 2.5 / 3.0 Service Shop Manual, Page 48

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Install bearing retainers (a) into cylinder block Check piston ring for spring tension thru exhaust port by pressing with screwdriver as shown If no tension exists (ring fails to return to position) i