DF90A

Twelve years after starting the four stroke revolution with its award winning DF70 and DF60 outboards, Suzuki is reinventing the category again with the DF90A. The first of Suzuki’s new generation four-strokes, the DF90A is a showcase of advancements and achievements – such as digital sequential electronic fuel injection, a powerful 2.59:1final drive ratio,  zero-maintenance self-adjusting time chain and don’t forget the Suzuki Lean Burn Control System.  New DF90A models also sport the optional Suzuki Troll Mode System.

Recommended Transom Height (inches) L: 20 X: 25
Starting System Electric
Weight LBS L: 341 X: 348
Engine Type DOHC 16-Valve
Fuel Delivery System Multi Point Sequential Electronic Fuel Injection
No. Of Cylinders 4
Piston Displacement inches (cc) 91.7 (1502)
Bore X Stroke Inches (mm) 3.00 x 3.30 (75 x 85)
Maximum Output HP 90
Operating Range (RPM) 5300 – 6300
Steering Remote (Tiller Kit Optional)
Choke N/A
Oil Pan Capacity quarts (liter) 4.2 (4.0)
Ignition System Solid State Direct Ignition
Alternator 12V 27A
Trim Position Power Trim and Tilt
Gear Ratio 2.59:1
Standard Propeller Optional See Dealer
Propeller Selection 13 – 23
  • Multi Point Sequential Electronic Fuel Injection
  • Suzuki Lean burn Control System
  • Suzuki Troll Mode System
  • Two-Stage Gear Reduction System
  • Offset Driveshaft
  • 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
  • Tilt Limit
  • Streamlined Gear Case
  • Speedometer Pickup of Gear Case
  • Suzuki Anti-Corrosion System

Advantages

Model Name: DF90A Honda 90 Mercury 90 Yamaha 90
Manufacturer: Suzuki Honda Mercury Yamaha
Horsepower: 90 90 90 90
Shaft Length (Inches): L (20), X (25) L (20), X (25) L (20), X (25) L (20), X (25)
Weight (Lbs): L (341), X (348) L (359), X (365) L (399) 369
Cylinders: In-line 4 In-line 4 In-line 4 In-line 4
Valves Per Cylinder: DOHC 4 Valves Per Cyl. SOHC 4 Valves Per Cyl. SOHC 4 Valves Per Cyl. DOHC 4 Valves Per Cyl.
Valve Train Drive: Self adjusting oil bathed timing chain Single overhead belt with variable valve timing Single overhead belt Belt
Displacement: 91.7 cu.in. (1502cc) 91.4 cu. in. (1496 cc) 105.7 cu. in. (1732 cc) 97.4 cu. in. (1596 cc)
Bore and Stroke (Inches/mm): 3.0 x 3.3 in. (75 x 85mm) 2.87 x 3.51 in. (73 x 89.4 mm) 3.23 x 3.23 in. (82 x 82 mm) 3.11 x 3.20 in. (79 x 81.4 mm)
Operating Range (RPM): 5300–6300 5300 – 6300 5000 – 6000 5000 – 6000
Induction System: Sequential EFI EFI EFI EFI
Starting System: Electric w/ Suzuki EFI Electric Electric Electric
Lubrication: Wet sump Wet sump Wet sump Wet sump
Oil Tank Capacity: 4.2 qt. (4.0 lit.) 4.6 qt. (4.41 lit.) Unknown 4.5 qt (4.3 lit.)
Ignition: Solid State Electronic Microcomputer Digital Inductive CDI Microcomputer
Alternator: 12V 27A 44 A 50 A 25 A
Trim Type: Power Trim and Tilt Power Trim and Tilt Power Trim and Tilt Power Trim and Tilt
Gear Ratio: 2.59 : 1 2.33:1/12:28 2.33:1 2.31:1/13:30
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: 13-23 Unknown Unknown Unknown
Steering: Remote (Tiller Kit optional) Unknown Unknown Unknown

DF90A Advantages

Over Honda
  • Lighter weight, more compact, 341 lbs vs.359 lbs.
  • Offset driveshaft = better balance
  • Self adjusting oil bathed timing chain vs. over head belt. No belt maintenance or adjustment necessary.
  • 2.59:1 vs. 2.33:1 Lower gear ratio to swing a larger prop for improved acceleration
  • 5.8 qt vs. 4.6qt: More lubrication, more cooling.
  • Suzuki Easy Start System. SImply turn the key and release, the starter will take care of the rest.
  • Suzuki Lean Burn Control System for better fuel economy
  • Streamline Gear Case for better performance
Over Mercury
  • Lighter weight, more compact, 341 lbs vs.399 lbs.
  • Self adjusting oil bathed timing chain vs. over head belt. No belt maintenance or adjustment necessary.
  • Offset driveshaft = better balance
  • 2.59:1 vs. 2.33:1 Lower gear ratio to swing a larger prop for improved acceleration
  • Suzuki Easy Start System. SImply turn the key and release, the starter will take care of the rest.
  • Suzuki Lean Burn Control System for better fuel economy
  • Streamline Gear Case for better performance
Over Yamaha
  • Self adjusting oil bathed timing chain vs. over head belt. No belt maintenance or adjustment necessary.
  • Lighter weight, more compact, 341 lbs vs.369 lbs.
  • Offset driveshaft = better balance
  • 2.59:1 vs. 2.31:1 Lower gear ratio to swing a larger prop for improved acceleration
  • 27 A charging vs. 25 A
  • Suzuki Easy Start System. SImply turn the key and release, the starter will take care of the rest.
  • Suzuki Lean Burn Control System for better fuel economy
  • Streamline Gear Case for better performance