DF50A

Engineered to deliver fuel efficient operation in a compact and light weight design, the DF50A has utilized many of the advancements that Suzuki has pioneered over the past decade.  This three cylinder DOHC engine is designed with Suzuki’s Lean Burn Control System to deliver high tech performance with efficient operation and top level fuel economy. And as an added bonus, new DF50A engines also incorporate Suzuki Troll Mode System.  During the 2011 Miami Boat Show, the Boating Writers of America presented Suzuki Marine with the NMMA Innovation Award for the DF50A/DF40A.

Recommended Transom Height (inches) L: 20
Starting System Electric
Weight LBS L: 229
Engine Type DOHC 12-Valve
Fuel Delivery System Multi Point Sequential Electronic Fuel Injection
No. Of Cylinders 3
Piston Displacement inches (cc) 57.4 (941)
Bore X Stroke Inches (mm) 2.85 x 2.99 (72.5 x 76)
Maximum Output HP 50
Operating Range (RPM) 5300 – 6300
Steering Remote (Tiller Kit Optional)
Choke N/A
Oil Pan Capacity quarts (liter) 2.9 (2.7)
Ignition System Solid State Direct Ignition
Alternator 12V 19A
Trim Position Power Trim and Tilt
Gear Ratio 2.27:1
Standard Propeller Optional See Dealer
Propeller Selection 9 – 17
  • Multi Point Sequential Electronic Fuel Injection
  • Suzuki Lean burn Control System
  • Suzuki Troll Mode System
  • Direct Ignition
  • Suzuki Easy Start System
  • Over-Rev. Limiter
  • Low Oil Pressure Caution
  • Fully Transistorized Ignition
  • Timing Chain
  • Fresh Water Flushing System
  • Power Trim and Tilt
  • Suzuki Anti-Corrosion System

Advantages

Model Name: DF50A Honda 50 Mercury 50 Yamaha 50
Manufacturer: Suzuki Honda Mercury Yamaha
Horsepower: 50 50 (1) 50 EFI, (2) 50 Big Foot EFI (1) 50 (2) 50 High Thrust
Shaft Length (Inches): L (20) L (20), X (25) L (20) L (20)
Weight (Lbs): 229 L (214), X (223) 247 L (247), X (267)
Cylinders: In-line 3 In-line 3 In-line 4 In-line 4
Valves Per Cylinder: DOHC 4 Valves Per Cyl. SOHC 2 Valves Per Cyl. SOHC 2 Valves Per Cyl. SOHC 2 Valves Per Cyl.
Valve Train Drive: Self adjusting oil bathed timing chain Belt Belt Belt
Displacement: 57.4 cu. in. (941 cc) 49.3 cu. in. (808 cc) 60.8 cu. in. (995 cc) 60.8 cu. in. (996 cc)
Bore and Stroke (Inches/mm): 2.85 x 2.99 in. (72.5 x 76mm) 2.80 x 2.80 in. (70 x 70 mm) 2.56 x 2.95 in. (65 x 75mm) 2.56 x 2.95 in. (63 x 75 mm)
Operating Range (RPM): 5300-6300 5500 – 6000 5500 – 6000 5000 – 6000
Induction System: Multi Point Sequential EFI with Lean Burn Control Programmed EFI with Lean Burn Control EFI EFI
Starting System: Suzuki Easy Start System Electric Electric Electric
Lubrication: Wet sump Wet sump Wet sump Wet sump
Oil Tank Capacity: 2.9 qt. (2.7 lit.) 2.5 qt. (2.4 lit.) 2.3 qt. (2.2 lit.) 2.6 qt. (2.5 lit.)
Ignition: Direct Ignition CDI Digital Inductive TCI
Alternator: 12V 19A 22 A 18 A 17 A
Trim Type: Power Trim and Tilt Power Trim and Tilt Power Trim and Tilt Power Trim and Tilt
Gear Ratio: 2.27:1 2.08:1 (1) 1.83:1 (2) 2.33:1 (1) 1.85:1/13:24 (2) 2.33:1/12:28
CARB Emissions Rating: 3-Star Ultra-Low 3-Star Ultra-Low 3-Star Ultra-Low 3-Star Ultra-Low
Standard Propeller (Blades x Dia. x Pitches (Ins.)): Optional – See Dealer Unknown Unknown Unknown
Range of Avail. Optional Propeller Pitches: 9-17 Unknown 9 – 26 Unknown
Steering: Remote (Tiller Kit optional) Unknown Unknown Unknown

DF50A Advantages

Over Honda
  • Larger Displacement 941cc (57.4 c.i.) vs. 808cc (49.2 c.i.) No replacement for displacement
  • Zero Maintenance Self Adjusting Timing Chain vs. Inspect and Replace Timing Belt
  • 2.27:1 vs. 1.83:1 Lower gear ratio to swing a larger prop for improved acceleration
  • Suzuki Easy Start System for customer convenience
Over Mercury
  • Suzuki Lean Burn Control System – Improved fuel economy
  • Zero Maintenance Self Adjusting Timing Chain vs. Inspect and Replace Timing Belt
  • DOHC 4 valves per cylinder vs. SOHC 2 valves per cylinder
  • 229 lbs. vs. 247 lbs. – Lighter Weight
  • 2.27:1 vs. 1.83:1 Lower gear ratio to swing a larger prop for improved acceleration
  • Suzuki Easy Start System for customer convenience
  • Suzuki Trim Limit System for customer convenience
Over Yamaha
  • Suzuki Lean Burn Control System – Improved fuel economy
  • Zero Maintenance Self Adjusting Timing Chain vs. Inspect and Replace Timing Belt
  • DOHC 4 valves per cylinder vs. SOHC 2 valves per cylinder
  • 229 lbs. vs. 247 lbs. – Lighter Weight
  • 2.27:1 vs. 1.85:1 Lower gear ratio to swing a larger prop for improved acceleration
  • Suzuki Easy Start System for customer convenience
  • Suzuki Trim Limit System for customer convenience