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{{Motorcycle
[[Image:Yamaha-DT400.jpg|thumb|right|250px|1975 Yamaha DT400]]
|name            = Yamaha DT400
The '''Yamaha DT400''' was [[single cylinder]] 360[[cc]] [[dual-purpose motorcycle]] for off-road and street use motorcycle produced by [[Yamaha]] in 1975 and 1976.
|photo= Yamaha-DT400.jpg
|aka              = DT400MX, DT 400 MX, DT 400
|manufacturer    = Yamaha
|parent_company  =
|production      = 1975 - 1978
|model_year      =
|predecessor      =
|successor        =
|class            = Enduro
|engine          = 400cc single cylinder, two-stroke
|bore_stroke      = 85.0mm x 70.0mm
|compression      = 6.4:1
|top_speed        = 85 mph (136 km/h)
|power            = 20.52 HP (15.3 KW) @ 5600RPM
|torque          = 20.65 ft/lbs (28.0 Nm) @ 3900RPM
|ignition        = cdi
|spark_plug      = {{sparkplug|NGK B8ES}} '75-78
|battery          = {{battery|YUASA 6N6-3B-1}} '77-78<br />{{battery|YUASA 6N4B-2A-3}} '75-76
|transmission    = Gear box: 5-speed <br>
Final Drive: [[chain]] <br>
Clutch: Wet multi-discs <br>
 
|frame            =
|suspension      =Front: Telescopic Forks <br>
Rear: Swinging Arm Fork
|brakes          =Front: expanding [[brake]] <br>Rear: expanding brake
|front_tire      = {{tire|3.00-21}}
|rear_tire    = {{tire|4.00-18}}
|rake_trail      =
|wheelbase        = 55.51 inches (1410 mm)
|length          =
|width            =
|height          =
|seat_height      =
|dry_weight      = 272.05 pounds (123.4 Kg)
|wet_weight      = 141.0 kg
|fuel_capacity    = 2.38 Gallon (9.00 Liters)
|oil_capacity    =
|recommended_oil= Yamalube 10w-40
|fuel_consumption =
|turning_radius  =
|value            = $2000
|related          =
|competition      =
|final_drive= {{chain|520}} `75-76<ref name="wps_street_2019">{{cite book|title=2019 Western Power Sports Catalog|publisher=[https://www.wps-inc.com/catalogs Western Power Sports]|date=2019}}</ref>
}}
 
The '''[[Yamaha]] DT400MX''' was a single cylinder, two-stroke Enduro [[motorcycle]] produced by [[Yamaha]] between 1975 and 1978. It could reach a top speed of 85 mph (136 km/h). Max [[torque]] was 20.65 ft/lbs (28.0 Nm) @ 3900 RPM. Claimed [[horsepower]] was 20.52 HP (15.3 KW) @ 5600 RPM. 
 


The DT400B had all the components for an [[enduro]] motorcycle including raised front and rear fenders, good ground clearance, a raised side mounted exhaust system. Stripped down, the DT400B could race in the early [[motocross]] races with similar motorcycles.
The DT400B had all the components for an [[enduro]] motorcycle including raised front and rear fenders, good ground clearance, a raised side mounted exhaust system. Stripped down, the DT400B could race in the early [[motocross]] races with similar motorcycles.
==Engine==
The engine was a [[air cooled]] single cylinder, two-stroke. A 85.0mm [[bore]] x 70.0mm [[stroke]] result in a [[displacement]] of just 397.0 cubic centimeters. Fuel was supplied via a membrane. 
==Drive==
The bike has a 5-speed transmission. Power was moderated via the Wet multi-discs. 
==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 front suspension was a  Telescopic Forks while the rear was equipped with a Swinging Arm Fork. The DT400MX was fitted with a 2.38 Gallon (9.00 Liters) fuel tank. The bike weighed just 272.05 pounds (123.4 Kg). The wheelbase was 55.51 inches (1410 mm) long. 


==Major competitors==
==Major competitors==
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*Suzuki
*Suzuki
==1975 DT400B==
==1975 DT400B==
<gallery mode="packed-hover">
[[Image:1975-Yamaha-DT400B-Blue-0.jpg|left|thumb|1975 Yamaha DT400B in Blue]][[Image:1975-Yamaha-DT400B-Blue-1.jpg|left|thumb|1975 Yamaha DT400B in Blue]][[Image:1975-Yamaha-DT400B-Blue-2.jpg|left|thumb|1975 Yamaha DT400B in Blue]][[Image:1975-Yamaha-DT400B-Blue-3.jpg|left|thumb|1975 Yamaha DT400B in Blue]][[Image:1975-Yamaha-DT400B-Blue-4.jpg|left|thumb|1975 Yamaha DT400B in Blue]][[Image:1975-Yamaha-DT400B-Blue-5.jpg|left|thumb|1975 Yamaha DT400B in Blue]][[Image:1975-Yamaha-DT400B-Yellow-2800-0.jpg|left|thumb|1975 Yamaha DT400B in Yellow]][[Image:1975-Yamaha-DT400B-Yellow-2800-1.jpg|left|thumb|1975 Yamaha DT400B in Yellow]][[Image:1975-Yamaha-DT400B-Yellow-2800-2.jpg|left|thumb|1975 Yamaha DT400B in Yellow]][[Image:1975-Yamaha-DT400B-Yellow-2800-3.jpg|left|thumb|1975 Yamaha DT400B in Yellow]][[Image:1975-Yamaha-DT400B-Yellow-2800-4.jpg|left|thumb|1975 Yamaha DT400B in Yellow]][[Image:1975-Yamaha-DT400B-Yellow-2800-5.jpg|left|thumb|1975 Yamaha DT400B in Yellow]][[Image:1975-Yamaha-DT400-Yellow-5470-0.jpg|left|thumb|1975 Yamaha DT400 in Yellow]][[Image:1975-Yamaha-DT400-Yellow-5470-1.jpg|left|thumb|1975 Yamaha DT400 in Yellow]][[Image:1975-Yamaha-DT400-Yellow-5470-2.jpg|left|thumb|1975 Yamaha DT400 in Yellow]]
File:1975-Yamaha-DT400B-Blue-0.jpg|left|thumb|1975 Yamaha DT400B in Blue
<br style="clear: left"/>
File:1975-Yamaha-DT400B-Blue-1.jpg|left|thumb|1975 Yamaha DT400B in Blue
File:1975-Yamaha-DT400B-Blue-2.jpg|left|thumb|1975 Yamaha DT400B in Blue
File:1975-Yamaha-DT400B-Blue-3.jpg|left|thumb|1975 Yamaha DT400B in Blue
File:1975-Yamaha-DT400B-Blue-4.jpg|left|thumb|1975 Yamaha DT400B in Blue
File:1975-Yamaha-DT400B-Blue-5.jpg|left|thumb|1975 Yamaha DT400B in Blue
File:1975-Yamaha-DT400B-Yellow-2800-0.jpg|left|thumb|1975 Yamaha DT400B in Yellow
File:1975-Yamaha-DT400B-Yellow-2800-1.jpg|left|thumb|1975 Yamaha DT400B in Yellow
File:1975-Yamaha-DT400B-Yellow-2800-2.jpg|left|thumb|1975 Yamaha DT400B in Yellow
File:1975-Yamaha-DT400B-Yellow-2800-3.jpg|left|thumb|1975 Yamaha DT400B in Yellow
File:1975-Yamaha-DT400B-Yellow-2800-4.jpg|left|thumb|1975 Yamaha DT400B in Yellow
File:1975-Yamaha-DT400B-Yellow-2800-5.jpg|left|thumb|1975 Yamaha DT400B in Yellow
File:1975-Yamaha-DT400-Yellow-5470-0.jpg|left|thumb|1975 Yamaha DT400 in Yellow
File:1975-Yamaha-DT400-Yellow-5470-1.jpg|left|thumb|1975 Yamaha DT400 in Yellow
File:1975-Yamaha-DT400-Yellow-5470-2.jpg|left|thumb|1975 Yamaha DT400 in Yellow
</gallery>
 


==1976 DT400C==
==1976 DT400C==
<gallery mode="packed-hover">
[[Image:1976-Yamaha-DT400-Yellow-262-0.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-262-1.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-262-2.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-262-3.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-2461-0.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-2461-1.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-2461-2.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-2461-3.jpg|left|thumb|1976 Yamaha DT400 in Yellow]][[Image:1976-Yamaha-DT400-Yellow-2461-4.jpg|left|thumb|1976 Yamaha DT400 in Yellow]]
File:1976-Yamaha-DT400-Yellow-262-0.jpg|left|thumb|1976 Yamaha DT400 in Yellow
<br style="clear: left"/>
File:1976-Yamaha-DT400-Yellow-262-1.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-262-2.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-262-3.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-2461-0.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-2461-1.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-2461-2.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-2461-3.jpg|left|thumb|1976 Yamaha DT400 in Yellow
File:1976-Yamaha-DT400-Yellow-2461-4.jpg|left|thumb|1976 Yamaha DT400 in Yellow
</gallery>
 
* Starting Engine#: 501-200101
* Starting Engine#: 501-200101


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==1978 DT400E==
==1978 DT400E==
<gallery mode='packed-hover'>
File:1978-yamaha-dt400-0.jpg|1978 Yamaha DT400
File:1978-yamaha-dt400-1.jpg|1978 Yamaha DT400
File:1978-yamaha-dt400-2.jpg|1978 Yamaha DT400
File:1978-yamaha-dt400-3.jpg|1978 Yamaha DT400
</gallery>
* Starting Engine#: 1M2-100101
* Starting Engine#: 1M2-100101


==1975 - 1977 Yamaha DT 400==
<gallery mode="slideshow">
File:yamaha-dt400-1974-1977-3.jpg|600px|1975 - 1977 Yamaha DT 400
File:yamaha-dt400-1974-1977-2.jpg|600px|1975 - 1977 Yamaha DT 400
File:yamaha-dt400-1974-1977-1.jpg|600px|1975 - 1977 Yamaha DT 400
File:yamaha-dt400-1974-1977-0.jpg|600px|1975 - 1977 Yamaha DT 400
</gallery>
This new big-bore 400cc enduro. Go just about anywhere, do just about anything and do it with zip! The DT1 250 had grown up, first to 360 size, and now 400, and had become an extremely seductive machine.
==1978 - 1980 Yamaha DT 400==
[[File:yamaha-dt400-1978-1980-0.jpg|600px|1978 - 1980 Yamaha DT 400]]
The latest Yamaha DT 400 has a new monoshock frame. The DT 400 has a performance capability close to that of the pure motocross machine.
==In Media==
* [https://motopixel.org/pixel/hyena-road#yamaha-dt400 Hyena Road]
* [https://motopixel.org/pixel/cobra#yamaha-dt400 Cobra]
* [https://motopixel.org/pixel/beethovens-2nd#yamaha-dt400 Beethoven's 2nd]
==References==
{{reflist}}
{{motorcycle-stub}}
{{Yamaha}}


[[Category:Yamaha motorcycles|DT400, Yamaha]]
[[Category:Yamaha motorcycles|DT400, Yamaha]]
[[Category:Yamaha DT Series]]
[[Category:1970s motorcycles]]
[[Category:1970s motorcycles]]
[[Category:Off-road motorcycles]]
[[Category:Off-road motorcycles]]
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[[Category:2-stroke motorcycles]]
[[Category:2-stroke motorcycles]]
[[Category:Reed Inlet Valve motorcycles]]
[[Category:Reed Inlet Valve motorcycles]]
[[Category:Enduro motorcycles]]
{{motorcycle-stub}}
[[Category:1970s motorcycles]]

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