Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 208Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 208

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8 Hold pressu re up on drive shaftLightly turn drive shaft backandforth(No movement should be not iced at propeller shaft Dial indi cator registers amount of backlashwhich must be .019" to .027" (.483