1995 Mariner Mercury Outboards Service Manual 50HP 4-Stroke, Page 9Get this manual
THERMOSTAT
Valve Opening Temperature Full Open Temperature Valve Lift Fuel Pump Type Fuel Pump: Pressure Diaphragm Stroke Plunger Stroke Fuel Tank Capacity Idle RPM (Out Of Gear) Idle RPM (In Forward Gear) Wide Open Throttle RPM (WOT) Range Idle Mixture Screw Main Jet Size Pilot Jet Float Height;
136F143F (58C62C) 158F (70C) 0.12 in(3 mm) External (PlungerDiaphragm) 3-6 PSI 0.140.20 in(3.55.1 mm) 0.230.35 in(5.859.05 mm) Accessory 800 50 RPM 700 50 RPM 55006000 2.5 (Turns Out) #112 #42 0.39 0.02 in(10.0 0.5 mm)