Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 255Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 255

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7 Lightly rotate the drive shaft clockwise and counterclockwise to measure backlashThe dial indicator should register .030 in(0.76mm) to .050 in(1.27mm)Take four readings rotating the drive shaft 180