1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 524Get this manual
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TORSIONAL DAMPER REMO VAL
udace on cra nksh ft dampe or leeve I'lith so lven to re mov corrosion, lud ge varni depo it Exce depos itsthal are nol readily remove with soh, nt, may be remo