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Honda Marine BF4 S Type
Honda Marine BF4 S Type

Specs

General Information

Manufacturer
Honda Marine
Honda Marine
Model
BF4 S Type
BF4 S Type
Model Code
BF4STYPE
BF4STYPE
Color
Silver
Silver

Engine

Cylinders
1
1
Engine Type
4-stroke OHV / 2 valves
4-stroke OHV / 2 valves
Ignition
Digital CDI
Digital CDI
Starting
Recoil
Recoil
Exhaust
Under water, above propeller
Under water, above propeller

Measurements

Power
4 Horsepower
4 Horsepower
Displacement
127 Cubic Centimeter
127 Cubic Centimeter
Bore x Stroke
2.4 x 1.8 in. (60 x 45 mm)
2.4 x 1.8 in. (60 x 45 mm)
Width
1' 1"
1' 1"
Transom Height
15 in. (434 mm)
15 in. (434 mm)
Dry Weight
60 lbs
60 lbs

Operational

Fuel Type
Unleaded
Unleaded
Full Throttle RPM Range
4,500 - 5,500 RPM
4,500 - 5,500 RPM
Fuel Induction

1 Carburetor

Internal Fuel Tank Capacity - 0.39 gal. (1.5 l)

1 Carburetor

Internal Fuel Tank Capacity - 0.39 gal. (1.5 l)

Lubrication
Wet sump
Wet sump
Cooling
Water
Water
Gear Ratio
2.08:1
2.08:1
Gear Shift
F-N-R
F-N-R
Trim System
Range - 5-stage - 5°, 9°, 13°, 17°, 21°
Range - 5-stage - 5°, 9°, 13°, 17°, 21°
Instrumentation

Oil Pressure Alert

Low Oil Pressure RPM Reduction

Decompression Mechanism

One-Touch Stop Button

Oil Pressure Alert

Low Oil Pressure RPM Reduction

Decompression Mechanism

One-Touch Stop Button

Propeller

3-Blade Aluminum

Diameter - 7.125 in.

Pitch - 7.5 in.

3-Blade Aluminum

Diameter - 7.125 in.

Pitch - 7.5 in.

Other

Warranty
5 year transferable, non-declining
5 year transferable, non-declining

Features

Features

  • RELIABLE, EFFICIENT 4-STROKE DESIGN: World-renowned Honda quality combines proven reliability and superior fuel efficiency, with no oil mixing.
  • LIGHTWEIGHT AND COMPACT: The BF4 and 5's lightweight, compact design makes them perfect for small tenders, sailboats, jon boats, and inflatables. Weighing in at only 60 pounds, these motors are easy to transport.
  • EASY TO START AND STOP: You'll be impressed with how easy it is to start the BF4 and 5. The decompression mechanism opens the exhaust valve during the starting process. This reduces the amount of force needed to start the motor. Starting is easy, every time. The one-push stop switch makes it just as easy to shut off the motor. Pressing the stop button once safely shuts off the motor without it re-starting.
  • LARGE CAPACITY INTERNAL FUEL TANK FOR BEST IN CLASS RUN TIME: The 1.5 L internal fuel tank provides enough fuel for over 40 minutes of wide open throttle operation. Need more run time? The BF5 offers an external fuel tank connection.
  • QUIET AND SMOOTH - LOW VIBRATION FOR A COMFORTABLE RIDE: Honda's exclusive design optimizes the isolation mounts to minimize the transfer of vibration to both the tiller handle and the transom. The custom rubber mounts absorb vibration, resulting in a motor with among the lowest handle vibration in its class.
  • 6 AMP CHARGING SYSTEM AVAILABLE: An optional 6 amp charging system helps keep accessories and electronics charged.
  • EASY TO CARRY AND INSTALL: An enlarged front carrying handle provides superior portability and ease of installation. Enlarged finger slots in the rear of the motor make it easy to grip when carrying or installing with two hands
  • CONVENIENT FOLD-DOWN TILLER HANDLE: The tiller handle’s compact design allows for easy transportation and storage.
  • QUIETEST IN IT'S CLASS: The BF4 and 5 lead their class in noise reduction from low to high speed.
  • LARGE DISPLACEMENT ENGINE FOR MORE POWER: Water-cooled, single cylinder design for better low- to mid-range power.
  • TWIST GRIP THROTTLE - MORE COMFORTABLE TO USE: Allows for precise throttle control. A unique throttle tensioner minimizes driver fatigue.
  • TRUE 5 WARRANTY - UNMATCHED PEACE OF MIND: Honda's True 5 Warranty is the best in the business. This transferable, non-declining warranty is the same on the first day as it is on the last.
  • 4-FRONT CORROSION PROTECTION SYSTEM - FIGHTS THE ELEMENTS: A patented, "Double Sealed" multi-layered paint process. Sacrificial anodes and stainless steel technology, along with waterproof connectors, all enhance corrosion protection.
  • DOUBLE ALERTS PROTECT YOUR ENGINE: A Low Oil Alert combined with an RPM reduction feature protect the engine from severe damage if the oil reaches a low pressure.
  • SHALLOW WATER DRIVE: An innovative shallow water drive feature lets you tilt the motor up, allowing you to easily operate in shallow areas. Shallow water drive greatly reduces the risk of engine damage
  • F-N-R GEARSHIFT: The BF4 and 5 feature full forward, neutral, and reverse shifting. A safety lockout system allows the engine to be started in neutral gear only.
  • POSITIVE LUBRICATION - BETTER DURABILITY: A crankshaft-driven, automotive-style trochoid oil pump ensures long-term durability of critical engine components.
  • ULTRA LOW 3 STAR CARB EMISSIONS: Environmentally conscious technology. All Honda Marine engines exceed the highest CARB 3-Star rating to meet the rigorous California Air Resource Board's standards.

Features

  • RELIABLE, EFFICIENT 4-STROKE DESIGN: World-renowned Honda quality combines proven reliability and superior fuel efficiency, with no oil mixing.
  • LIGHTWEIGHT AND COMPACT: The BF4 and 5's lightweight, compact design makes them perfect for small tenders, sailboats, jon boats, and inflatables. Weighing in at only 60 pounds, these motors are easy to transport.
  • EASY TO START AND STOP: You'll be impressed with how easy it is to start the BF4 and 5. The decompression mechanism opens the exhaust valve during the starting process. This reduces the amount of force needed to start the motor. Starting is easy, every time. The one-push stop switch makes it just as easy to shut off the motor. Pressing the stop button once safely shuts off the motor without it re-starting.
  • LARGE CAPACITY INTERNAL FUEL TANK FOR BEST IN CLASS RUN TIME: The 1.5 L internal fuel tank provides enough fuel for over 40 minutes of wide open throttle operation. Need more run time? The BF5 offers an external fuel tank connection.
  • QUIET AND SMOOTH - LOW VIBRATION FOR A COMFORTABLE RIDE: Honda's exclusive design optimizes the isolation mounts to minimize the transfer of vibration to both the tiller handle and the transom. The custom rubber mounts absorb vibration, resulting in a motor with among the lowest handle vibration in its class.
  • 6 AMP CHARGING SYSTEM AVAILABLE: An optional 6 amp charging system helps keep accessories and electronics charged.
  • EASY TO CARRY AND INSTALL: An enlarged front carrying handle provides superior portability and ease of installation. Enlarged finger slots in the rear of the motor make it easy to grip when carrying or installing with two hands
  • CONVENIENT FOLD-DOWN TILLER HANDLE: The tiller handle’s compact design allows for easy transportation and storage.
  • QUIETEST IN IT'S CLASS: The BF4 and 5 lead their class in noise reduction from low to high speed.
  • LARGE DISPLACEMENT ENGINE FOR MORE POWER: Water-cooled, single cylinder design for better low- to mid-range power.
  • TWIST GRIP THROTTLE - MORE COMFORTABLE TO USE: Allows for precise throttle control. A unique throttle tensioner minimizes driver fatigue.
  • TRUE 5 WARRANTY - UNMATCHED PEACE OF MIND: Honda's True 5 Warranty is the best in the business. This transferable, non-declining warranty is the same on the first day as it is on the last.
  • 4-FRONT CORROSION PROTECTION SYSTEM - FIGHTS THE ELEMENTS: A patented, "Double Sealed" multi-layered paint process. Sacrificial anodes and stainless steel technology, along with waterproof connectors, all enhance corrosion protection.
  • DOUBLE ALERTS PROTECT YOUR ENGINE: A Low Oil Alert combined with an RPM reduction feature protect the engine from severe damage if the oil reaches a low pressure.
  • SHALLOW WATER DRIVE: An innovative shallow water drive feature lets you tilt the motor up, allowing you to easily operate in shallow areas. Shallow water drive greatly reduces the risk of engine damage
  • F-N-R GEARSHIFT: The BF4 and 5 feature full forward, neutral, and reverse shifting. A safety lockout system allows the engine to be started in neutral gear only.
  • POSITIVE LUBRICATION - BETTER DURABILITY: A crankshaft-driven, automotive-style trochoid oil pump ensures long-term durability of critical engine components.
  • ULTRA LOW 3 STAR CARB EMISSIONS: Environmentally conscious technology. All Honda Marine engines exceed the highest CARB 3-Star rating to meet the rigorous California Air Resource Board's standards.