1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 79Get this manual

1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 79

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Specific Gravity Readings Use hydrometer (a) to measure specific gravity of electrolyte in each cell
Specific gravity of electrolyte varies not only with percentage of acid in liquid but also wi