TOKYO [Thu. 6th March, 2008]
TOKYO, Japan, March 6, 2008 - Honda Motor Co., Ltd. announced that it has implemented model changes for its BF50 (50HP) and BF40 (40HP) medium-sized, 4-stroke outboard engines. The new models will be available starting March 6 at Honda outboard engine dealers throughout Japan.

The new BF50 and BF40 outboard engines will retain their class-leading lightweight, compact packaging, enhanced with PGM-FI1 electronic fuel injection, Honda's original BLAST2 (Boosted Low Speed Torque) air/fuel ratio and ignition-timing technology, and lean-burn control to deliver powerful startup and acceleration together with outstanding fuel economy during cruising.

BLAST, along with a newly designed gear case and other improvements, contributes to improved acceleration and a higher top speed, while lean-burn control results in a 22%3 improvement in fuel economy over the previous model4 during cruising. Battery charging capacity has also been increased to 17 amperes - over 1.7 times that of the previous model-to achieve class-topping5 charging performance.
1 PGM-FI (Programmed Fuel Injection) is a registered Honda trademark.
2 BLAST (Boosted Low Speed Torque) was first employed in the BF90 (90HP), released in November 2006. Particularly during acceleration, it effectively boosts performance by adjusting the air/fuel ratio for maximum torque while advancing ignition timing to its maximum pre-knock level to increase torque under full-load conditions.
3 Fuel economy as measured at 80% of rated engine rpm and 57% of rated output in EPA emissions mode (Honda calculations)
4 Compared to previous BF50 (Honda calculations)
5 Honda calculations

Source : www.world.honda.com