Yamaha DT250: history, specs, pictures

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Yamaha DT250
Manufacturer Yamaha
Production 74-79
Engine 250cc
Sparkplug BEES '74-75 , 76-79
Battery 6N6-3B-1 76-79
6N4B-2A-3 '74-75
Front Tire 3.00-21 '74-75 , 76-79
Rear Tire 4.00-18 '74-75 , 76-79
Competition Harley-Davidson SX250
Kawasaki KE250B
Yamaha DT250
Honda XL250
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha DT250 is a motorcycle produced by Yamaha from 1974 to 1979.

1971

1971 Yamaha DT250 in Orange
1971 Yamaha DT250 in Orange
1971 Yamaha DT250 in Orange
1971 Yamaha DT250 in Orange
1971 Yamaha DT250 in Orange
1971 Yamaha DT250 in Orange



1972

1972 Yamaha DT250 (DT1F) in Gold
1972 Yamaha DT250 (DT1F) in Gold
1972 Yamaha DT250 (DT1F) in Gold
1972 Yamaha DT250 (DT1F) in Gold
1972 Yamaha DT250 (DT1F) in Gold



1975 DT250B

1975 Yamaha DT250B in Orange
1975 Yamaha DT250B in Orange
1975 Yamaha DT250B in Orange
1975 Yamaha DT250B in Orange
1975 Yamaha DT250B in Orange
1975 Yamaha DT250B in Orange
1975 Yamaha DT250B in Orange


1978

1978 Yamaha DT250 in Gray
1978 Yamaha DT250 in Gray
1978 Yamaha DT250 in Gray
1978 Yamaha DT250 in Gray
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver
1978 Yamaha DT250E in Silver


Yamaha DT250
Manufacturer Yamaha
Also called DT 250F, DT250F, DT 250 MX, DT 250, DT250MX
Production 1972 - 1982
Class Trail
Engine single cylinder, two-stroke
Bore / Stroke 70.0mm x 64.0mm
Top speed 68 mph (109 km/h)
Horse Power 15.69 HP (11.7 KW) @ 5400RPM
Torque 12.91 ft/lbs (17.5 Nm) @ 6500RPM
Fuel system carburettor
Ignition type contact breaker point
Battery 6.7:1
Transmission Gear box: 5-speed

Final Drive: chain

Clutch: wet plate
Brakes Front: expanding brake
Rear: expanding brake
Front Tire 3.00-21
Rear Tire 4.00-18
Weight 244.93 pounds (111.1 Kg) (dry), 135.0 kg (wet)
Fuel capacity 2.38 Gallon (9.00 Liters)
Fuel consumption 2.50 litres/100 km (40.0 km/l or 94.09 mpg)
Manuals Service Manual
Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha DT250MX was a single cylinder, two-stroke Trail motorcycle produced by Yamaha between 1972 and 1982. It could reach a top speed of 68 mph (109 km/h). Max torque was 12.91 ft/lbs (17.5 Nm) @ 6500 RPM. Claimed horsepower was 15.69 HP (11.7 KW) @ 5400 RPM.

Engine

The engine was a air cooled single cylinder, two-stroke. A 70.0mm bore x 64.0mm stroke result in a displacement of just 246.0 cubic centimeters. Fuel was supplied via a membrane.

Drive

The bike has a 5-speed transmission. Power was moderated via the wet plate.

Chassis

It came with a 3.00-21 front tire and a 4.00-18 rear tire. Stopping was achieved via expanding brake in the front and a expanding brake in the rear. The DT250MX was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 244.93 pounds (111.1 Kg).

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