a - Serial number
b - Model year
c - Model designation
d - Year manufactured
e - Certified Europe Insignia (as applicable)
40 Sea Pro/Marathon - 30/40 HP Specifications
Models 30 40
Horsepower 30 40
Kilowatts 22.4 29.8
Full Throttle RPM Range -
Pleasure Models
4500-5500 RPM 5000-5500 RPM
Full Throttle RPM Range (Sea
Pro/Marathon Models)
4500-5500 RPM
Idle Speed in Forward Gear 700-750 RPM
Number of Cylinders 2
Piston Displacement 644 cc (39.3 cu. in.)
Cylinder Bore 76 mm (2.993 in.)
Piston Stroke 71 mm (2.796 in.)
Recommended Spark Plug NGK BPZ8H-N-10
Spark Plug Gap 1.0 mm (0.040 in.)
Gear Ratio 2.0:1
Recommended Gasoline Refer to Fuel & Oil
Recommended Oil Refer to Fuel & Oil
Gearcase Lubricant Capacity 440 ml (14.9 fl. oz.)
Battery Rating
465 Marine Cranking AMPS (MCA) or 350 Cold Cranking
AMPS (CCA)
Ampere Hours (Ah) 70-100
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