BBMS Swanwick LTD

phone - 01489 580250 or fax 01489 580251


Mercury Four Stroke 4 HP

Technical Specification

HP @ Prop 4

kW @ Prop 2.9

Max RPM (WOT) 4500-5500

Cylinders 1

Displacement (CID/cc) 7.5/123

Bore & Stroke (in) 2.32 x 1.77

Bore & Stroke (mm) 59 x 45

Cooling System Water-cooled w/thermostat

Ignition System CDI w/electric spark advance

Starting Manual

Gear Ratio 2.15:1

Gear Shift F-N-R

Steering Tiller

Alternator Amp Optional 4-amp lighting/2-amp charging

Alternator Watt Optional 50-watt lighting/25-watt charging

Trim Positions 6

Shallow Water Drive Standard

Exhaust System Through Prop

Lubrication System Pressurized wet sump

Recommended Oil Mercury 4-Stroke Outboard Oil

Oil Capacity 450 mL / 15 oz

Fuel Induction System 2-valve pushrod

Integral Fuel Tank (Gal) 0.39 (remote 3.2 Gal. optional)

Integral Fuel Tank (L) 1.1 (remote 12L optional)

Shaft Length (inches) 15/20

Shaft Length (mm) 381/508

Dry Weight (lbs.) 55

Dry Weight (kg.) 25

Operator Warning System Low oil pressure

Overrev Protection Standard

Available Propellers Consult current dealer propeller guide

Warranty 3 years

CARB Star Rating 3