SUZUKI DF350AMD/300BMD_DF350A/325A/300B : A REVOLUTION IN INNOVATIONA REVOLUTION IN INNOVATION
Beginning with the introduction of the DF350A and DF325A in 2017, Suzuki has
honed its technical capabilities with the aim of providing customers with an
ULTIMATE Marine Life.
Now, Suzuki has improved this existing Flagship Family(DF350A / 325A / 300B)
and developed new technologies in order to make further progress while maintaining this stance.
SUZUKI will continue to evolve in the future to provide more comfortable marine
life to customers.

GEKI : PARTING SEAS

Renewed Flagship

NEW DF350AMD / 300BMD & DF350A / 325A / 300B
. Suzuki's First Integrated Steering System. Advanced New Gear Case
. Available in 20 inch(L), 25inch(X) and 30inch(XX) transom height.

Advanced New Gear Case
■ Enhanced Durability& Reliability

By lowering the gear oiltemperature■ Increased Top

Integrated Steering System(only for DF350AMD / 300BMD)■ Simple appearance of the motorwellwhen rigging.

■ Allows rigging to various types of boats.
There is no need to worry about interference between the external
cylinder and the boat.

Speed

With the Advanced New Gear Case, Top Speed increased more than 2%.
*the data is based on "In-House Suzuki Testing" under uniformed conditions. Results will varydepending upon operating conditions(boat design, size, weight, weather, etc).

■ Improved maintainability
By adding the new mechanism for changing gear oil.

■ Improved Fuel Eﬃciency■ Reduced Gear Oil from 3.2ℓ → 2.8ℓ.

Available in 20 inch(L), 25inch(X) and30inch(XX) transom height.
(only for DF350AMD / 300BMD)■ It enables the rigging to various types of boats

34

SUZUKI'S FIRST INTEGRATEDSTEERING SYSTEM■ Simple appearance of the motorwell when rigging

Structure of the Integrated Steering System

The Integrated Steering System enables rigging without external steering cylinder, resulting in a cleaner
motorwell and a clean ﬁnish.

Cross-Sectional view of the Integrated Steering System from above■ Prevent from hitting the motorwell when tilting up
With the conventional external cylinder, there are cases that the external cylinder interferes with themotorwell depending on the boat type. However, this Integrated Steering System eliminates such worries
and enables the rigging to various types of boats.
Conventional DF350A/325A/300B(with external steering components)

NEW DF350AMD/300BMD(Integrated Steering System)

Steering axis

Clamp bracket

Steering axis

Hydrauliccylinder

Pinion gear

Third party
hydraulic cylinder
steering system

Transom board

HydraulicHydraulic

Rack gear

Hydraulic cylinder
HydraulicHydraulic

Conventional Steering System

5Integrated Steering System

6

ADVANCED GEAR CASE
Durability & Reliability■ Lowered Gear Oil Temperature
To improve Reliability, the circulationof the gear oil has been improved,
which suppresses the temperaturerise of the gear oil.

PerformanceEase & Comfort■ Increased Top Speed■ New mechanism for changing gear oil

The new designed gear case reduced 4% of the frontal
projected area which increased the Top Speed by morethan 2%*.

By adding a special oil passage, Gear oil can be changed
without lifting the boat by using an oil changer.

■ Compatible with conventional models
Conventional Gear Case vs Advanced New Gear Case
Advanced New Gear Case

Faster : 2%or more

Reducing 4%Lower unit including the Advanced Gear Case is compatible
with conventional DF350A / DF325A / DF300B and it isinstalled as standard for all models(DF350AMD/300BMD,
DF350A/325A/300B).

Special Oil Passage for the gear oilchanger

Conventional Gear Case

Ecology & Economy■ Improved Fuel Eﬃciency
Adopting the New Advanced Gear
Case contributes to the better FuelEﬃciency.

■ Reduced Gear Oil
By reviewing the gear case, theamount of gear oil is reduced from
3.2ℓ to 2.8ℓ.
7Fuel Eﬃciency

4.0

Fuel consmption (mpg)*The data is based on “In-House Suzuki Testing” under uniformed conditions. Results
will vary depending upon operating conditions (boat design, size, weight, weather, etc).

New Advanced Gear Case
Conventional Gear Case
3.0

2.0

1.00204060

Boat speed (mph)*The data is based on “In-House Suzuki Testing” under uniformed conditions. Results
will vary depending upon operating conditions (boat design, size, weight, weather, etc).

8Craftsmanship of DF350A/325A/300B is inherited.
Dual louver
DIRECT INTAKE SYSTEM AND DUAL LOUVER SYSTEM FOR COOL AND DRY AIR
The New models , DF350AMD/300BMD、DF350A/325A/300B are equipped with adog-leg shaped Dual Louver at the air
intake to remove water from the air taken
into the cowl. Incorporating a direct intake
system makes the compression ratioof 12.0:1(DF350AMD/350A),
10.5:1(DF300BMD/325A/300B) possible,
ultimately leading to a higher engineoutput.

The Power of "DUAL"
Dual Injector

DUAL INJECTORS FOR BOTH COOLING AND POWERSUZUKI DUAL LOUVER SYSTEM

Dual Prop
DEVELOPMENT OF SUZUKI’S FIRST CONTRA-ROTATING PROPELLER
The Dual Prop system eﬃciently turns
engine's output into propulsion underwater. As an added beneﬁt, because eachpropeller rotates in a diﬀerent direction,
exceptional stability is achieved.
In addition, the contra-rotating propellers
produce a strong reverse thrust.

Eﬃcient combustion and suppression ofknocking are necessary to produce morepower.
Suzuki achieved eﬃcient combustion with
optimal fuel injection by adopting the Dual
Injector and with optimum combustion
chamber conﬁguration.
Further, the Dual Injector atomizes the fuel toenhance the cooling action in the combustion
chamber and suppress knocking.
In fact, Suzuki has succeeded in increasing theoutput by 3%.

DUAL INJECTOR

Dual Water InletSUZUKI DUAL PROP SYSTEMDUAL WATER INTAKES
Designing the shape of the gear case also
required repositioning the water intakes. It was
important to arrange the main and sub intakes
as far apart from each other as possible, and todesign them to ensure a reliable amount ofcooling water, especially at high speeds.

DUAL

DUAL WATER INLET
910

OUR PROVEN TECHNOLOGIES ARE
OF COURSE INHERITED.
Durability & Reliability
SELF-ADJUSTING TIMING CHAINANTICORROSION

ANTI-CORROSION FINISH

WATER DETECTING SYSTEMTILT LIMITEase & Comfort
SUZUKI PRECISION CONTROL(SPC)SDSM+(Optional)

KEYLESS START SYSTEM(Optional)

NOISE REDUCTION

TROLL MODEPerformance

EASY START SYSTEMOFFSET DRIVESHAFT

2.29

AUTOMATIC TRIM(Optional)

EASY STARTSYSTEMA
AUTOMATIC
TRIM

2-STAGE GEAR REDUCTIONVARIABLE VALVE TIMING

Ecology & Economy
LEAN BURN CONTROL SYSTEMDIRECT INTAKE
DF350A model
1112SPECIFICATIONSFEATURES

Model

DF350AMD

DF300BMD

DF350A

DF325A

DF300B

Starting System

ElectricElectric

Recommended Tramsom Height (mm)

L:508
X:635
XX:762

X:635
XX:762

Weight (kg)*

L:345
X:352
XX:360

X:330
XX:338

Valve Train

DOHC 24 ValvesDOHC 24 Valves● =Standard Equip. 〇 =Optional Equip.
Model

BODY COLOR

DF350AMD/300BMD

DF350A/325A/300BBlack●●White●●

NEW INTEGRATED STEERING SYSTEM●ADVANCED NEW GEAR CASE●●SUZUKI DUAL LOUVER SYSTEM●●

DUAL INJECTOR

●

●

●

●

Valve Train Drive

Chain

Chain

DUAL WATER INLET

Displacement(cm3)

4,390

4,390

SUZUKI DUAL PROP SYSTEM

●

●

239.0

DIRECT AIR INTAKE●●

Maximum Output(kW)

257.4

220.7

Bore and Stroke(mm)257.4

98 x 97

Operation Range(rpm)5700-6300

220.7

98 x 975300-6300

5700-6300

5300-6300

Fuel Delivery System

Electronic Fuel Injection

Electronic Fuel Injection

Oil Pan Capacity(L)

8.0

8.0

Alternator

12V 54A

12V 54A

Trim TypePower Trim and Tilt

Power Trim and Tilt

Gear Ratio

2.29

Control System

2.29

DBW

Recommended Fuel

RON94 AKI89

Propeller Selection

RON94 AKI89

12”-31.5”

●

●

●

●

SELF-ADJUSTING TIMING CHAIN●●

WATER DETECTING SYSTEM●●VARIABLE VALVE TIMING SYSTEM●●SUZUKI PRECISION CONTROL●●NOISE REDUCTION●●

RON91 AKI87
12”-31.5”*Dry Weight : Including battery cable, not including propeller and engine oil.

DIMENSIONS1●●SUZUKI EASY START SYSTEM●●LEAN BURN CONTROL SYSTEM●●DIRECT IGNITION●●NEW KEYLESS START SYSTEMSUZUKI TROLL MODE SYSTEM*DBW
RON91 AKI87OFFSET DRIVESHAFT
2-STAGE GEAR REDUCTION〇〇AUTOMATIC TRIM SYSTEM*2〇〇SUZUKI DIAGNOSTIC SYSTEM MOBILE Plus〇〇SUZUKI ANTI-CORROSION SYSTEM●●TILT LIMIT SYSTEM●●OVER-REV. LIMITER●●LOW OIL PRESSURE CAUTION●●FRESH WATER FLUSHING SYSTEM●●*1 available by using with SMG4/SMD/Troll Mode Switch Panel*2 available by using with SMD/SMG4698

C
972

563(281.5)

32°

A352

EB

51

988

1310

1218(281.5)32°

512(871)512(101)

DF350AMD/300BMD

Z(=12°)

Y

1315°

YZA

B

CDE

XX

762

2,168

1,377

37203

X

635

2,041

1,259

37155 68° 4° 12°

L508

1,914

1,141

37108

DX

X

Transom

Please read your owner's manual carefully. Remember, boating and alcohol or other drugs don't mix. Always wear
a personal ﬂotation device when boating. Please operate your outboard safely and responsibly. Suzuki
encourages you to operate your boat safely and with respect for the marine environment.
Speciﬁcations, appearances, equipment, colors, materials and other items of “SUZUKI” products shown on thiscatalogue are subject to change by manufacturers at any time without notice and they may vary depending on
local conditions or requirements. Some models are not available in some territories. Each model might bediscontinued without notice. Please inquire at your local dealer for details of any such changes. Actual body color
might diﬀer from the colors in this brochure.

99999-C2022-001 DF350A PRODUCT INFORMATION14