yamaha DT 400 (1976-77)

The Yamaha DT 400 is a two-stroke, single-cylinder, air-cooled motorcycle introduced in 1976. It has a capacity of 397cc and a compression ratio of 6.4:1. The bike is powered by a single 28mm Mikuni carburetor and a CDI ignition system. Its maximum power output is 23 hp / 17.1 kW @ 5500 rpm and its maximum torque is 3.8 kg-m / 27.5 lb-ft @ 5000 rpm. The transmission is a 5-speed system, and the final drive is done through a chain. The front suspension is a telescopic fork, while the rear suspension uses a swinging arm fork. The motorcycle is equipped with drum brakes on both the front and rear wheels. The front tire size is 3.00-21, while the rear tire size is 4.00-18. The Yamaha DT 400 has a wheelbase of 1410 mm / 55.5 in, a dry weight of 124 kg / 272 lbs, and a fuel capacity of 9 Litres / 2.3 US gal. The motorcycle’s top speed is 87 mph, and it can cover a standing quarter-mile distance in 16.5 seconds at a speed of 74.5 mph.

Technical specifications:

Make Model: Yamaha DT 400

Year: 1976 – 77
Engine: Two stroke, single cylinder, read valve
Capacity: 397 cc / 24.2 cu-in
Bore x Stroke: 85 ~A | 70 mm
Cooling System: Air cooled
Compression Ratio: 6.4:1
Induction: Single 28mm Mikuni carburetor
Ignition: CDI
Starting: Kick
Max Power: 23 hp / 17.1 kW @ 5500 rpm
Max Torque: 3.8 kg-m / 27.5 lb-ft @ 5000 rpm
Transmission: 5 Speed
Final Drive: Chain
Front Suspension: Telescopic forks
Rear Suspension: Swinging arm fork
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 3.00-21
Rear Tyre: 4.00-18
Wheelbase: 1410 mm / 55.5 in
Dry Weight: 124 kg / 272 lbs
Wet Weight: 141 kg / 310.9 lbs
Fuel Capacity: 9 Litres / 2.3 US gal
Standing ~A1/4 Mile: 16.5 sec / 74.5 mph
Top Speed: 87 mph