Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 224Get this manual

Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 224

POWERHEAD
PISTON DIAMETER
Dimension "A" at Right Angle (90) to Piston Pin 0.700 17.78mm

3.4925 in .0005 in(88.7095 mm .0127 mm)
Using micrometer, measure dimension "A" at location shownDimension "A" should be 3.4925 in .0005 for STANDARD size piston (new) Dimension "A" will be 0.0010.0015 less if coating is worn off piston (used)

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