1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 57Get this manual
Specifications Ignition System Type Spark Plug Type Spark Plug Gap Firing Order
Capacitor Discharge Ignition NGK DPR6EA9 0.035 in (0.9mm) 1-3-4-2 75050 RPM 650 50 RPM 6000 RPM #112 #42 B.T.D.C
Carburetor Specifications Idle RPM (Out of Gear) Idle RPM (In Gear) Wide Open Throttle (WOT) RPM Main Jet Size Pilot Jet Size Timing Specifications Ignition Timing Full Retarded (850 50 RPM) Full Advanced (2500-3000 RPM)
Special Tools
Description Carburetor Tuner Part No91-809641A1
NOTE: The 50 Four-Stroke C.D.Iunit electronically controls the ignition timing, therefore making the ignition timing non adjustableWhen initially running the outboard, use timing light to verify that the ignition timing falls within the timing windows as described within the following testsIf the ignition timing does not stay within the timing windows, replace the ignition C.D.Iunit and retest(Refer to the Ignition Diagnostic Procedures tests in Section 2A