Suzuki DF4A 4 HP 4-Stroke Portable Outboard Motor
Lightweight Portable Power, Quiet Operation, Easy Storage & 5-Year Manufacturer Warranty
The
Suzuki DF4A 4 HP 4-Stroke Portable Outboard Motor is designed to bring dependable propulsion and impressive maneuverability to small watercraft without the weight and complexity of a larger outboard. With a compact
55 lb short-shaft configuration, the DF4A is easy to attach, remove, transport, and store, making it a versatile choice for a wide range of small boats.
Powered by a
138 cc single-cylinder OHV four-stroke engine, the DF4A delivers 4 HP across an operating range of
4,000–5,000 RPM. Its compact design makes it suitable for applications ranging from small fishing and utility boats to duck boats, tenders, inflatables, and other compatible watercraft.
Suzuki has engineered the DF4A with several features aimed at improving efficiency, reliability, comfort, and portability. These include an
offset crankshaft, forced lubrication system, integrated oil filter, quieting technologies, three-way storage capability, five trim positions, an improved tilt system, vibration-reducing tiller handle, and dual-position carrying grips.
Key Features
Lightweight & Portable 4 HP Power
The DF4A delivers
4 HP while maintaining a manageable
55 lb weight in the supplied short-shaft configuration.
Its portable design makes it easy to move between boats or transport to and from the water.
Versatile Small-Craft Compatibility
The DF4A is designed to fit a wide variety of compatible small watercraft, making it useful for boaters who want one portable engine that can be moved between different vessels.
Potential applications include:
- Small fishing boats
- Duck boats
- Tenders
- Inflatable boats
- Utility craft
- Paddle-board applications where an appropriate motor-compatible configuration is used
Always verify the vessel manufacturer's horsepower and engine-weight requirements before installation.
Easy Starting After Storage
The DF4A uses an
integral overhead fuel tank and one-way fuel valve that allow gravity-fed fuel delivery.
This design allows the engine to be started without opening the engine cover, including after periods of storage.
Offset Crankshaft
The crankshaft is positioned slightly off-center relative to the cylinder.
This reduces lateral pressure between the piston and cylinder wall as the piston moves, helping create smoother piston movement and improved operating efficiency.
Quiet Operation
Suzuki has incorporated several design changes intended to reduce operating noise.
These include:
- Intake silencer designed to optimize air-intake capacity and shape
- Redesigned rocker arm
- Plane-type crankshaft bearing
- Reduced rocker-arm play
- Modified crankshaft bearing design
The result is a quieter operating experience, particularly during typical mid-range operation.
Highly Reliable Lubrication System
The DF4A uses a
forced lubrication system with additional oil passages serving the upper and lower crankshaft areas and connecting-rod big end.
An integrated oil filter is designed to improve lubrication-system reliability, while the repositioned oil window allows the operator to visually check the actual lubrication condition.
Three-Way Storage
The DF4A's fuel and lubrication systems allow the motor to be stored on
three different sides:
This provides greater flexibility when transporting or storing the outboard.
Improved Tilt System
The DF4A features an updated tilt system with a revised shallow-drive arm path.
When raised, the motor can be locked into
three positions. When lowered, it can smoothly move to its lowest position without requiring a locking position.
Vibration-Reduced Tiller Handle
The tiller handle has been improved to help reduce vibrations transmitted to the operator's hand.
The DF4A is particularly designed to mitigate vibration during mid-range operation, helping reduce hand fatigue during extended use.
Improved Carrying Handles
The integrated carrying handle in the lower cover has been rounded for improved grip.
An additional front grip provides a convenient second carrying point, allowing the motor to be transported using
both hands.
Specifications
General Specifications
| Specification |
Details |
| Brand |
Suzuki |
| Model |
DF4A |
| Horsepower |
4 HP |
| Recommended Transom Height |
15″ |
| Shaft Configuration |
Short (S) |
| Weight |
55 lb |
| Steering |
Tiller |
| Starting System |
Manual |
| Fuel Delivery |
Carburetor |
| Engine Type |
OHV 4-Stroke, 2-Valve |
| Cylinders |
1 |
| Choke |
Manual |
| Ignition |
Digital CDI |
| Trim Positions |
5 |
| Tilt Pin Positions |
3 |
| Gear Ratio |
1.92:1 |
Engine Specifications
| Specification |
Details |
| Engine Type |
OHV 4-Stroke |
| Valves |
2 |
| Cylinders |
1 |
| Displacement |
138 cc / 8.4 cu. in. |
| Bore × Stroke |
62 × 46 mm / 2.44 × 1.81 in. |
| Maximum Output |
4 HP |
| Operating Range |
4,000–5,000 RPM |
| Ignition System |
Digital CDI |
| Fuel Delivery |
Carburetor |
| Choke |
Manual |
Fuel System
The DF4A incorporates an
integral overhead fuel tank with a one-way fuel valve.
The gravity-fed fuel arrangement is designed to simplify starting and fuel delivery, including after the motor has been stored for an extended period.
This integrated configuration also contributes to the DF4A's compact, self-contained design.
Lubrication System
Suzuki's DF4A uses a
forced lubrication system engineered for dependable internal engine lubrication.
The system includes additional oil passages serving critical crankshaft and connecting-rod areas.
An integrated oil filter is designed to improve lubrication reliability, while the strategically positioned oil window allows the operator to visually inspect the lubrication condition.
| Specification |
Details |
| Lubrication System |
Forced Lubrication |
| Oil Pan Capacity |
0.74 qt / 0.7 L |
| Oil Filter |
Integrated |
| Oil Inspection |
Visual oil window |
Electrical & Ignition System
The DF4A uses a
Digital Capacitor Discharge Ignition (CDI) system for ignition control.
It is also equipped with a
12V 6A alternator, providing electrical output for compatible applications.
| Specification |
Details |
| Ignition |
Digital CDI |
| Alternator |
12V |
| Alternator Output |
6A |
| Starting |
Manual |
Propeller
The standard DF4A configuration includes a
3-blade propeller.
| Specification |
Details |
| Blades |
3 |
| Diameter |
7.5″ |
| Pitch |
6.5″ |
| Standard Propeller |
3 × 7.5 × 6.5 |
| Propeller Selection Range |
6–7 |
The supplied specifications indicate a propeller selection range of
6–7 pitch, providing flexibility for compatible applications and operating conditions.
Trim & Tilt
The DF4A provides
five trim positions to help optimize the motor's operating angle.
Its updated tilt system features a revised shallow-drive mechanism:
- Five trim positions
- Three tilt-pin locking positions
- Smooth movement to lowest position
- Shallow-drive capability
- Revised shallow-drive arm path
The three locking positions allow the motor to be secured at different raised positions when needed.
Tiller & Steering
The DF4A uses
tiller steering with an improved handle designed to provide greater operating comfort.
Suzuki redesigned the tiller system to reduce vibration transferred to the operator's hand, particularly through the mid-range operating zone.
A steering system designed with vibration mitigation in mind helps make the motor more comfortable to operate for longer periods.
Portability & Transportation
Portability is one of the DF4A's strongest characteristics.
The
55 lb short-shaft configuration is designed for easy handling, while the lower engine cover incorporates an integrated carrying handle.
A second front grip allows the motor to be carried with both hands, improving balance and handling during transportation.
Storage
The DF4A is designed to make storage easier than many conventional outboards.
Its fuel and lubrication systems permit storage on
three sides, giving owners more freedom when placing the motor in a vehicle, garage, shed, or storage compartment.
The supported storage orientations are:
- Port side
- Starboard side
- Front
This three-way storage capability makes the DF4A particularly convenient for boaters who frequently transport their motor.
Noise Reduction
Suzuki has incorporated several mechanical and intake-system changes to reduce the DF4A's operating noise.
The engine features:
- Intake silencer
- Optimized air-intake design
- Redesigned rocker arm
- Reduced rocker-arm play
- Plane-type crankshaft bearing
- Revised bearing structure
These changes are designed to minimize mechanical and intake noise while maintaining efficient engine operation.
Starting & Fuel Convenience
The DF4A is designed to be particularly convenient after storage.
Its integral overhead fuel tank and one-way valve allow fuel to flow by gravity, helping the engine start without requiring the operator to open the engine cover.
Combined with the manual starting system and Digital CDI ignition, this creates a straightforward starting arrangement for a portable outboard.
Recommended Applications
The Suzuki DF4A is well suited for compatible:
- Small fishing boats
- Duck boats
- Tenders
- Inflatables
- Utility boats
- Small recreational craft
- Portable boating applications
- Compatible paddle-board configurations
Its combination of
4 HP output, 55 lb weight, integrated fuel tank, and portable design makes it particularly attractive for boaters who frequently transport or switch their outboard between vessels.
Important Product Notes
- Model: Suzuki DF4A
- Shaft: 15-inch Short (S)
- Weight: 55 lb
- Horsepower: 4 HP
- Engine: 138 cc single-cylinder OHV 4-stroke
- Valves: 2
- Operating range: 4,000–5,000 RPM
- Fuel delivery: Carburetor
- Fuel tank: Integral overhead tank
- Starting: Manual
- Steering: Tiller
- Choke: Manual
- Ignition: Digital CDI
- Alternator: 12V 6A
- Oil capacity: 0.74 qt / 0.7 L
- Gear ratio: 1.92:1
- Trim positions: 5
- Tilt positions: 3
- Standard propeller: 3-blade, 7.5″ × 6.5″
- Propeller selection: 6–7 pitch
- Warranty: Suzuki's newest 5-year manufacturer warranty
Warranty
The Suzuki DF4A is specified with
Suzuki's newest 5-Year Manufacturer Warranty.
Warranty coverage is subject to Suzuki's applicable terms, conditions, registration requirements, and authorized-service policies.
Why Choose the Suzuki DF4A?
The
Suzuki DF4A 4 HP 4-Stroke Portable Outboard Motor is designed for boaters who want practical power without sacrificing portability.
Its
55 lb weight, integrated fuel tank, easy-start design, quiet operation, offset crankshaft, reliable forced lubrication system, three-way storage capability, improved tilt system, five trim positions, and vibration-reduced tiller make it a highly versatile small-craft outboard.
Whether used on a small fishing boat, duck boat, tender, inflatable, or other compatible watercraft, the DF4A provides an appealing combination of
portable 4 HP performance, convenient operation, low noise, easy storage, and dependable Suzuki engineering.
Backed by Suzuki's
5-year manufacturer warranty, the DF4A is built to provide reliable propulsion for weekend adventures, fishing trips, hunting excursions, and everyday small-watercraft use.
