Mercury Optimax Models 135, 150, Direct Fuel Injection., Page 112Get this manual
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TIMING, SYNCHRONIZINGADJUSTING
- Air Gap [0.025 in0.040 in0.635 mm1.02 mm)]Crank Position SensorFlywheel ToothBracket Screw (Drive Tight)0.010 in(0.254 mm) or 0.020 in(0.508 mm) Shim if required