Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 7Get this manual
SPECIFICATIONS
CARBURETOR
Idle rpm (Out Of Gear) Idle rpm (In Forward Gear) Wide Open Throttle rpm (WOT) Range Main Jet Size Pilot Jet Idle Jet Float Height
900 25 rpm 800 25 rpm 5500-6000 #98 #38 #42 0.47-0.63 in(12.0-16.0 mm)
4 Siroke Cycle Over Head Camshaft 45.6 cuin(747cc) 2.953 in(75 mm) 2.5591 in(65 mm) 2.5689 in(65.25 mm) 2.5787 in(65.5 mm) 0.003 in(0.08 mm) Cast Iron
Aluminum
CYLINDER BLOCK STROKE
Type Displacement Number of Cylinders Length
Diameter Standard Oversize-O.010 in(0 .25 mm) Oversize-0.020 in(0.50 mm) TaperOut of Round Maximum Bore Type Piston Type 0.0at Skirt Standard Oversize-0.Ol0 in(0.25 mm) Oversize-0.020 in(0.50 mm) Piston to Cylinder Clearance
CYLINDER BORE