page 1 Heavy-duty, indirect-injection emission compliant diesel engine DELTA Series DWS4 Engine DWS4 Power ranges: 23.7—48.5 kW; 31.8—65.0 bhp Variable or fixed speed; full load speed range: 1200—2500 r/min Special Attributes ƒÀ designed for continuous operation in ambient temperatures up to 52°C (122°F) ƒÀ tropical radiator with pusher fan and full guarding Engine Characteristics • four cylinders • diesel-fuelled • liquid-cooled • indirect injection • naturally aspirated Design Features and Equipment • self--vent fuel system with rotary fuel injection pump and integrated fuel control solenoid • gear-driven positive displacement type lubricating oil pump) • standard oil and fuel filters • heavy-duty air cleaner • 12V electric starting with a 55 Amp alternator • flywheel with ring gear • SAE 3 flywheel housing • inlet and exhaust manifolds • combustion chamber glow plugs • engine temperature switch • low oil-pressure switch • 250-hour service intervals • operators' handbook Emissions Compliance • compliant to EU Stage 2 at 1500 r/min Optional Items • optional 5-year extended warranty A range of options enables you to select a specification that matches your requirements. Please consult your Lister Petter distributor.

page 3 Technical Data Number of cylinders 4 Type of fuel injection Indirect Aspiration Natural Direction of rotation (flywheel end) Anticlockwise Nominal cylinder bore mm 94.00 in 3.7 Stroke mm 120.00 in 4.7 Total cylinder capacity litre 3.33 in3 203.3 Compression ratio 22:1 Firing order (number 1 cylinder is at the gear end) 1 - 3 - 4 - 2 Idling speed (minimum) r/min 700 Full-load speed (minimum) r/min 1200 Number of flywheel ring gear teeth 122 Number of starter motor pinion gear teeth 10 Intermittent end thrust (maximum) Forwards towards the flywheel N 2160 lbf 485.0 Rearwards away from the...

page 4 Approximate Dimensions and Weight Dry weight kg 245 lb 539 Length (A) mm 781 in 30.7 Width (B) mm 570 in 22.4 Height (C) mm 712 in 28.0 Rating Definitions (ISO 3046) 1. Fixed Speed Power - continuous speed (ICN) The power in kW which the engine is capable of delivering continuously at the stated crankshaft speed, under conditions of 100 kPa barometric pressure, 30% relative humidity and 25°C air inlet temperature, provided that the engine is overhauled and maintained in good operating condition and that fuel to BS EN 590 Class A1 or A2, and lubricating oils to the correct performance specification...