Honda Announces Full Model Upgrade for BF2 2PS 4-Stroke Outboard Motor

August 26, 1998, Japan

Power Products

Tokyo, August 26, 1998 - The BF2, the world's only 4-stroke outboard motor in the 2PS class, has undergone a full model upgrade, and will go on sale from September 30 at Honda marine sales outlets.
The BF2 was designed as a light, compact and economically affordable 4-stroke outboard motor that was also extremely environment-friendly. Based on the GXV50 super-compact 4-stroke engine, which features an OHV (overhead valve) design that delivers a highly efficient combustion ratio, the BF2 is low on pollution while also consuming less fuel.



Fitted with a centrifugal clutch, the BF2 is capable of ultra-slow cruising and trawling speeds, and can idle when the boat is stationary. A grip throttle version is also available. The combination of a grip throttle and centrifugal clutch raises its operability considerably, making the BF2 ideal for a wide range of uses--leisure, angling, commercial fishing, and more.

All of Honda's outboard motors include 4-stroke engines, giving them the combination of extremely clean exhaust emissions with lower fuel costs. The line-up contains a total of 13 models ranging from 2PS to 130PS, allowing anyone to find a model perfectly suited to individual needs.

The US Environmental Protection Agency (EPA) is currently supervising the phased introduction of exhaust emission standards that stipulate a legal maximum level of emissions by the year 2006. All of Honda's 4-stroke outboard motors already achieve exhaust emission levels that are well below the values mandated at this time. In addition, these engines easily meet the voluntary code of standards for exhaust emission reductions laid down by the Japan Boating Industry Association, which is also in the process of supervising the phased introduction of exhaust emission standards for marine craft during the period 2000-2006.

Main features of the BF2 4-stroke outboard motor:

  • Its exhaust emissions fall well below the values stipulated in the voluntary code of standards for reduction of exhaust emissions of hydrocarbons (HC) and nitrogen oxides (NOx) which will be phased in on a step-by-step basis between 2000 and 2006 by the Japan Boating Industry Association.
  • The centrifugal clutch facilitates forward motion without the need for gear changes, and allows the boat to come to a halt. Its enhanced operability also allows super-low trawling speeds.
  • The grip throttle/steering arrangement is well matched with the centrifugal clutch, making the motor very easy to use.
  • A new construction design combined with the use of new materials (incorporating, for example, sleeveless uni-block cylinders and an aluminum-sintered connecting rod) boosts the engine's reliability, and has allowed the engine to be reduced in size and weight.

Domestic annual sales target:

300 units

Main specifications:

Motor name BF2D
Engine type 4-stroke single-cylinder vertical-axis gasoline (OHV)
Total displacement (cc) 57
Bore x stroke (mm) 45 x 36
Full-throttle engine speed range (rpm) 5,000 ~ 6,000
Maximum power output (kW (PS)/rpm) 1.5 (2)/6,000
Cooling forced-air cooling system
Ignition transistor-type magnet
Starter recoil type
Exhaust underwater exhaust
Standard propeller
(no. of blades-diameter x pitch)
3-184 x 120
Total length/width/height
(L transom) (mm)
410 x 280 x 1,100
Transom height S:418 L:571
Dry weight (kg) SCJ: 12.4 CJ: 13 CHJ: 12.7 LCHJ: 13.3
Fuel tank volume (l) 1.0 (built-in)

The Japan Boating Industry Association voluntary code is being phased in on a step-by-step basis from 2000 to 2006. This covers reductions in exhaust emissions of hydrocarbons (HC) and nitrogen oxides (NOx) from all gasoline-powered marine engines, including both powered craft and outboard motors. The code aims to achieve a 75% reduction in such emissions within this period.