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Resumen del manual
Based on a 4.0-liter Big Block V6 the DF250SS produces 250 horsepower and delivers outstanding acceleration throughout the entire powerband thanks to the incorporation of some of Suzuki’s most advanced technologies. With a 20-inch transom, it’s perfect for bass boats, sport pontoons, ski boats, flats and bay boats or any other boat that demands power, performance and reliability. The DF250SS also offers all the advantages of Suzuki’s 4-stroke technology, such as superior fuel economy, quiet, low vibration, and environmentally friendly operation, all while providing impressive performance and rock solid reliability. Suzuki 250SS Ifyou’re as serious about outboard performance as you are about your sport, then the DF250SS is definitely for you. 2 DF250SS PRODUCT INFORMATION 3 DF250SS Main Features n The DF250SS is designed to deliver performance and reliability that today’s sport users demand. n 4.0-liter Big Block V-6 engine–combined with Suzuki’s Variable Valve Timing (VVT) and Multi Stage Induction delivers superior acceleration throughout the entire powerband. n The 20-inch transom is perfect for bass boats, sport pontoon boats, ski boats, flats and bay boats or any boat that is designed for the sportsman who is serious about outboard performance. n Gear case features a hydrodynamic design, introduced first on the flagship DF300, that reduces drag resistance for fast acceleration and increased top speed. n The DF250SS complies with the California Air Resources Board's (CARB) 2008 exhaust emission standard and has earned the 3-Star Ultra Low Emission Rating. 4 Diagram of VVT Mechanism Suzuki Technologies Deliver Outstanding Performance Camshaft Position Sensor Rotation Direction VVT Actuator Throttle Opening Angle Water Temp Feed back Cam Position Crank Position Manifold Pressure Water Temp Sensor Throttle Sensor Map Sensor* Intk Camshaft Ex Camshaft Crankshaft Position Sensor Duty Control Crankshaft ECM Target Advance Actual Valve Timing Intk Camshaft Retard Advance Drain Oil Filter Oil Pump Oil Pan Engine Oil Flow Oil Control Valve (OCV) *Manifold Absolute Pressure Sensor Signal DF250SS PRODUCT INFORMATION TORQUE LOW MID ENGINE SPEED HIGH without VVT with VVT Valve Overlap Valve Lift Ex Valve Advance 40° Movable Angle Intk Valve Retard Crank Angle VVT (Variable Valve Timing) Suzuki engineers started o in a big way by designing the DF250SS based on a big block 4.0-liter engine, the largest displacement found in this class. .is V6 engine features an aggressive cam pro.le, delivering maximum output and performance at high rpm, and Suzuki’s advanced Variable Valve Timing (VVT), provides the DF250SS with the torque needed to boost low- to mid-range acceleration. VVT provides this boost by adjusting the intake valve timing, allowing intake valves to open before the exhaust valves are fully closed. .is process creates a momentary overlap in the timing where both sets of valves are open. With VVT, this overlap can be increased or decreased by altering intake timing with the camsha.s to optimize timing for low- and mid-range operation. 5 Alumite coating Piston Resin coating TORQUE (50N•m) LOW MID ENGINE SPEED (rpm) HIGH without Multi-Stage Induction with Multi-Stage Induction Torque Curve Multi-Stage Induction Module Air Flow in Multi-Stage Induction Module Lower rpm High rpm Close Open Forged Pistons eupper portion of each piston used in the DF250SS is treated with an alumite coating that increases heat resistance. A resin coating applied to the piston skirt improves resistance to wear and reduces friction. Fuel Cooler ecooler the fuel the denser it is, and the denser it is, the more performance it delivers. e DF250SS incorporates a water - cooled fuel rail in the fuel delivery system. e fuel is cooled before it is injected into the cylinder resulting in better combustion and better performance. Multi-Stage Induction Suzuki engineers also utilized Suzuki’s Multi-Stage Induction, which changes intake manifold pipe length according to engine rpm to enhance engine performance.e DF250SS utilizes two intake manifold pipes per cylinder; one operates at low engine rpm and the other takes over at higher rpm. During low engine rpm, air enters the combustion chamber through the longer, curved manifold pipe. e particular length of this pipe allows just the right amount of fresh air into the chamber to improve combustion and boost low-end torque. Asengine rpm increases, a valve on the intake manifold opens, letting air enter directly into the combustion chamber through the short, straight intake pipe. is allows a greater volume of air into the chamber, increasing the engine’s ability to breathe at high rpm, thus improving high-end power output. 6 Offset Drive Shaft Offset Driveshaft Suzuki incorporates a number of innovative designs into its outboards. As a result, Suzuki o!ers some of the most compact outboards in their class. One such design innovation is the o!set drivesha". Positioning the cranksha" in front of t...