Cart All manuals sold in downloadable format only . Remove item Thumbnail image Product Price Quantity Subtotal × Mercruiser/GM 454, 502 c.i. Marine Engine Service Manual (Gen V & VI) $9.95 Mercruiser/GM 454, 502 c.i. Marine Engine Service Manual (Gen V & VI) quantity $9.95 Update cart Cart totals Subtotal $9.95 Total $9.95 Proceed to checkout