Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 442Get this manual

Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 442

LEFT HAND NON-RATCHETING
9Dial Indicator registers amount of backlash, which should be 0.030 into 0.050 in(0.76 mm to 1.27 mm)

- Stud Adaptor (from 91-14311A1)StudBacklash Indicator Tool (91-78473)Dial Indicator Holder (91-89897)Dial Indicator (91-58222A1)Dial Indicator Pointer