Suzuki DF200APX Specifications
| Engine Model: Suzuki DF200APX |
| Engine Type: 4-stroke inline 4-cylinder DOHC 16-valve gasoline outboard engine |
| Total Displacement: 175 cu.in (2.9 L) |
| Rated Engine Power: 200 Hp (147 kW) at 6000 rpm |
| Fuel System: Multi point sequential electronic fuel injection |
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The Suzuki DF200APX is a technologically
advanced 200 Hp outboard that redefines expectations for inline
four-cylinder performance. It is built around a large-displacement "big
block" inline four-cylinder powerhead with a 2,867 cc displacement and a
high 10.2:1 compression ratio, drawing upon Suzuki's extensive
motorsports experience to generate impressive acceleration and low-end
torque.
The powerhead features a DOHC 16-valve design with a maintenance-free
self-adjusting timing chain and Variable Valve Timing (VVT) that
optimizes intake valve timing to maximize torque across the low and
mid-range, delivering powerful acceleration throughout the entire
powerband. The integration of the Suzuki Lean Burn Control System,
utilizing an O2 sensor feedback loop, optimizes the air-fuel mixture for
significant fuel savings.
A secondary balancer system effectively counters inherent inline
four-cylinder vibrations for exceptionally smooth engine operation
across the entire rpm range. With exclusive features including Suzuki
Precision Control drive-by-wire, a convenient keyless start system with
immobilizer, and the Suzuki Selective Rotation lower unit for perfect
twin-engine setups, the DF200APX is engineered to satisfy the demands of
serious boaters seeking a reliable, efficient, and high-performing
outboard for 25-inch transom applications.
Engine Model: Suzuki DF200APX
Engine Type: 4-Stroke, DOHC (Double Overhead Camshaft), 16-Valve
Number of Cylinders: In-Line 4
Valve Train Drive: Self-adjusting oil-bathed timing chain with automatic
hydraulic tensioner
Bore and Stroke: 97.0 mm x 97.0 mm (3.81 in x 3.81 in)
Piston Displacement: 2867 cc (175 cu. in)
Maximum Output: 147 kW (200 Hp)
Full Throttle Operating Range: 5500-6100 rpm
Idle Speed: 600-700 rpm
Fuel Delivery System: Multi-Point Sequential Electronic Fuel Injection
with Lean Burn Control
Alternator: 12V 44A
Trim Method: Power Trim and Tilt
Gear Ratio: 2.50:1 with Two-Stage Gear Reduction
Gear Shift: F-N-R (Forward-Neutral-Reverse) via Suzuki Precision Control
Control System: Suzuki Precision Control (Digital Drive-by-Wire)
Exhaust: Through Prop Hub Exhaust
Propeller Selection: 15"-27.5" (Standard Rotation); 17"-26" (Counter
Rotation)
Starting System: Electric with Suzuki Keyless Start System
Ignition System: Fully-transistorized
Engine Lubrication: Trochoid pump pressure lubrication
Engine Oil Capacity: 8.0 L (8.5/7.0 US/Imp. qt.)
Spark Plug: NGK LKR6E
Spark Plug Gap: Standard: 0.8-0.9 mm (0.031-0.035 in)
Valve clearance (Intake): 0.23-0.27 mm (0.009-0.011 in) (cold)
Valve clearance (Exhaust): 0.30-0.34 mm (0.012-0.013 in) (cold)
Fuel Type: Alcohol-free unleaded gasoline
Minimum Fuel Octane Rating: 87 (Research method)
Compression Ratio: 10.2:1
The DF200APX is built upon a robust inline four-cylinder block with a
large displacement of 2,867 cc, making it one of the largest available
displacements in the 200 Hp four-cylinder four-stroke class. This
substantial "big block" displacement has a direct effect on acceleration
and torque, delivering the performance expected of a V6 outboard from a
more compact powerplant. The block is combined with a high compression
ratio of 10.2:1, drawing on Suzuki's extensive motorsports experience to
obtain great performance from a compact engine. The powerhead features a
DOHC configuration with four valves per cylinder for optimal airflow and
combustion efficiency.
A key feature is the maintenance-free, self-adjusting oil-bathed timing
chain with an automatic hydraulic tensioner, ensuring precise valve
timing over the engine's life without requiring periodic adjustments.
The Variable Valve Timing (VVT) system, hydraulically controlled by oil
pressure, optimizes intake valve timing to maximize torque in the low
and mid-range. The system starts with an innovative cam profile designed
for delivering maximum output and performance at high rpm, with VVT used
to vary intake timing to optimize timing for low to mid-range operation,
allowing the engine to deliver maximum power output across its entire
operating range.
To neutralize the secondary vibration inherent to high-rpm operation in
inline four-cylinder engines, Suzuki engineers utilize a secondary
balancer system that counters the piston's movement with a horizontal
motion. The balancer is divided into left and right sections, each
rotating in an opposite direction at twice the speed of the crankshaft,
effectively countering the secondary vibrations and producing remarkably
smooth engine operation.
The offset driveshaft design, pioneered by Suzuki, positions the
crankshaft in front of the driveshaft, moving the outboard's center of
gravity forward. This contributes greatly to the outboard's overall
compactness and improved weight distribution on the boat's transom,
while also moving the engine's axis of inertia up over the upper engine
mount, thus greatly reducing vibration. A combination of soft-type and
high-thrust rubber mounts on both the upper and lower mounts further
reduces engine vibration and provides stable operation, with soft mounts
absorbing vibrations in the idle through 2,000 rpm range while
high-thrust mounts deliver stable operation under high loads.
The DF200APX's fuel system is highlighted by the Suzuki Lean Burn
Control System, an intelligent fuel delivery technology that achieves
remarkable improvements in fuel consumption. Monitoring engine
performance and operating conditions in real time, the system uses a
32-bit onboard Engine Control Module (ECM) to predict fuel needs and
deliver a leaner, more precise fuel mixture across the outboard's
operating range. The results show significant improvements in fuel
economy across the entire powerband, including the cruising range where
the engine is used a majority of the time.
The Multi-Point Sequential Electronic Fuel Injection system precisely
meters fuel to each cylinder for optimal combustion. The O2 Sensor
Feedback Control system monitors engine operating conditions to provide
input to the ECM, allowing it to manage the fuel-air mixture for maximum
performance across the engine's full operating range. A Knock Sensor
monitors combustion to provide the ECM with information needed for
precise management of engine timing for optimum performance, maximizing
power output while also helping to increase engine durability.
A specially designed cowl incorporates a semi-direct air intake system
that delivers cooler air directly to the engine's tuned multi-stage
induction module. Engines breathing cooler air are able to increase
operating efficiency, resulting in greater acceleration and top-end
speed. The engine also features an air intake resonator that reduces
noise generated by air being sucked at high velocities into the intake
manifold, keeping operation exceptionally quiet.
The DF200APX employs a trochoid pump pressure lubrication system to
ensure consistent pressurized oil delivery to all critical engine
components, including the crankshaft, connecting rods, and the valve
train with its VVT components. The engine has a substantial oil capacity
of 8.0 liters.
Engine temperature is managed by a reliable water-cooled system. A water
pump, located in the lower unit, draws water from the surrounding
environment and circulates it through water jackets in the cylinder
block and powerhead. For post-operation maintenance, the Fresh Water
Flushing System with dual freshwater flush ports allows easy connection
of a garden hose to rinse salt, sand, and other debris from the cooling
passages, protecting the engine from corrosion.
The Suzuki Water Detecting System utilizes a water-detecting fuel filter
to alert the operator with both visual and audio warnings when water is
present in the fuel, preventing issues like poor combustion, power loss,
and corrosion.
| Mid Section and Lower Unit |
The mid-section houses the offset driveshaft, which contributes to the
engine's forward center of gravity and compact mounting footprint. The
lower unit features a robust gearcase designed for the innovative Suzuki
Selective Rotation system, available exclusively on DF200AP models. This
world-first technology incorporates a special, unified design of gears,
shafts, and bearings in the lower unit that allow the outboard to
operate reliably and efficiently in either standard or counter-rotation
direction.
For boats equipped with twin outboards, this eliminates the need to
purchase a dedicated counter-rotation model; the DF200APX can be
switched to counter-rotation mode by installing an optional activation
switch that connects to a circuit inside the engine compartment plus the
installation of a counter-rotation propeller.
The lower unit utilizes a two-stage gear reduction system designed to
take maximum advantage of the power produced by the high-performance
engine. Providing a final drive ratio of 2.50:1, one of the largest in
its class, it delivers powerful torque for quick acceleration and great
top-end speed. The Multi-Stage Induction (MSI) system ensures the engine
gets the right amount of air by utilizing two intake manifold pipes per
cylinder.
At low rpm, air enters the combustion chamber through a longer, curved
manifold pipe designed to improve combustion and boost low-end torque.
As rpm increases, valves open on the direct intake pipes, which are
shorter and lack resistance, allowing a greater volume of air into the
chamber for higher power output during high-speed operation. Exhaust
gases are channeled through the propeller hub for quieter operation.
The Power Trim and Tilt (PTT) system provides hydraulic control over the
outboard's angle, allowing the operator to adjust boat trim for optimal
performance, fuel efficiency, and ride comfort. The Tilt Limit System
incorporates a user-adjustable tilt limit switch that prevents the
outboard from tilting beyond a predetermined point, protecting both the
engine and boat from damage that can occur when tilting the motor.
The system includes an impact relief valve as a safety feature to
protect the gearcase and prevent internal PTT pressure build-up in the
event of an underwater impact. A manual release valve allows the engine
to be raised or lowered manually in case of electrical system failure.
The DF200APX is designed to work with a range of high-performance
stainless steel propellers to match various boat types and load
conditions. The recommended propeller pitch selection ranges from 15
inches to 27.5 inches for standard rotation models, and from 17 inches
to 26 inches for counter-rotation applications.
All propellers are of the three-blade type. The Watergrip Propeller,
featuring an interchangeable square-shaped bush, offers efficient
conversion of engine power to propulsion resulting in better grip and
performance.
Transom Height (Extra Long Shaft - X): 635 mm (25 in)
Dry Weight (Extra Long Shaft - X): 241 kg (530 lbs)
Engine Mounting: Shear Mount system with rubber dampers
Initial Service: Perform at 20 hours or 1 month.
Engine Oil: Change every 100 hours or 12 months.
Engine Oil Capacity: 8.0 L (8.5 US qt.) with filter.
Engine Oil Filter: Replace every 200 hours or 12 months.
Recommended Engine Oil: 4-stroke motor oil, NMMA certified FC-W oil, or
API classification SG, SH, SJ, SL, SM.
Viscosity rating SAE 10W-40 or 10W-30.
Gear Oil: Replace every 100 hours or 12 months.
Gear Oil Capacity: 1,100 ml (37.2 US oz).
Recommended Gear Oil: Suzuki Outboard Motor Gear Oil or API
classification GL5.
Viscosity rating SAE 90 Hypoid gear oil.
Spark Plugs: NGK LKR6E. Inspect every 100 hours or 12 months.
Spark Plug Gap: Standard: 0.8-0.9 mm (0.031-0.035 in).
Valve Clearance (Intake): 0.23-0.27 mm (0.009-0.011 in) (cold); inspect
every 300 hours or 36 months.
Valve Clearance (Exhaust): 0.30-0.34 mm (0.012-0.013 in) (cold); inspect
every 300 hours or 36 months.
Low Pressure Fuel Filter: Inspect every 100 hours or 12 months; replace
every 400 hours or 2 years.
High Pressure Fuel Filter: Replace every 1,000 hours.
Water Pump Impeller: Inspect every 200 hours or 12 months; replace every
300 hours or 36 months.
Balancer Chain: Replace every 1,600 hours.
Anodes (external): Inspect every 100 hours or 12 months.
Battery: Check fluid level every 100 hours or 12 months if not using a
maintenance-free battery; add distilled water only as needed.
Maintenance Features: The self-adjusting timing chain is
maintenance-free, running in an oil bath with automatic hydraulic
tensioner ensuring proper adjustment at all times. The Suzuki Water
Detecting System alerts the operator when water is present in the fuel.
The Fresh Water Flushing System simplifies cooling system cleaning. An
oil change reminder system alerts the operator when service is due.
Suzuki includes a flexible rigging kit, choice of electronic
drive-by-wire control box, multi-function gauge, and keyless start
immobilizer system with each outboard.
Engine Oil Drain Plug: 13 Nm (9.5 lb-ft)
Engine Oil Filter: 14 Nm (10.0 lb-ft)
Spark Plugs: 17 Nm (12.3 lb-ft)
The Suzuki DF200APX is an exceptionally versatile outboard, suitable for
a wide range of boat types requiring a 25-inch shaft length. Its design
emphasis on low-end torque, light weight, compact dimensions, and the
availability of Selective Rotation makes it a preferred choice for many
applications. Center Console Fishing Boats: An ideal primary power
source for center consoles and bay boats, as demonstrated by the 2026
C-Hawk 23 Center Console which is factory-rigged with the Suzuki
DF200APXW5, showcasing its suitability for saltwater fishing
applications.
Rigid Inflatable Boats (RIBs): Powers high-performance RIBs such as the
Island RIBs 7.5m, achieving cruising speeds of 33 knots and maximum
speeds of 40 knots with excellent fuel efficiency and quiet operation.
Semi-Rigid Boats: Selected for limited edition packages like the
Zeppelin Commander 22 VPRO "Classic Edition," combining with the
DF200APX to guarantee an unparalleled experience at sea for leisure
fishing and pleasure boating customers.
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