Difference between revisions of "Yamaha YZ250"

223 bytes removed ,  23:12, 15 July 2019
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|successor        =
|successor        =
|class            = [[Motocross]]
|class            = [[Motocross]]
|engine          = single cylinder, four-stroke
|engine          = single cylinder, two-stroke
|bore_stroke      = 77.0mm x 53.6mm
|bore_stroke      =  
|compression      = 10.6:1
|compression      =  
|top_speed        =
|top_speed        =
|power            =
|power            = 48.8 hp
|torque          = 34.67 ft/lbs (47.0 Nm) @ 7500RPM
|torque          = 32 ft/lbs  
|ignition        = cdi
|ignition        = cdi
|spark_plug      = {{sparkplug|NGK BR8EIX}} '98-06<br />{{sparkplug|NGK BR8EG}} '83 , '96-97<br />{{sparkplug|NGK B9EV}} '74-81<br />{{sparkplug|NGK B9EG}} '82 , '84-87<br />{{sparkplug|NGK B8EG}} '88-95
|spark_plug      = {{sparkplug|NGK BR8EIX}} '98-06<br />{{sparkplug|NGK BR8EG}} '83 , '96-97<br />{{sparkplug|NGK B9EV}} '74-81<br />{{sparkplug|NGK B9EG}} '82 , '84-87<br />{{sparkplug|NGK B8EG}} '88-95
|battery          =  
|battery          =  
|transmission    = Gear box: 6-speed <br>
|transmission    = Gear box: 5-speed <br>
Final Drive: [[chain]] <br>
Final Drive: [[chain]] <br>
Clutch: multiplate [[wet clutch]] <br>
Clutch: multiplate [[wet clutch]] <br>
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The '''[[Yamaha]] YZ250FX''' was a single cylinder, [[four-stroke]] Enduro [[motorcycle]] produced by [[Yamaha]] between 2002 and 2019. Max [[torque]] was 34.67 ft/lbs (47.0 Nm) @ 7500 RPM.   
The '''[[Yamaha]] YZ250''' was a single cylinder, [[two-stroke]] [[motocross]] [[motorcycle]] produced by [[Yamaha]] between 1974 and 2019. It is one of the last two-stroke 250cc bikes still in production.   


==History==
==History==
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==Engine==
==Engine==
Following information is incorrect: The engine was a [[liquid cooled]] single cylinder, four-stroke. A 77.0mm [[bore]] x 53.6mm [[stroke]] result in a [[displacement]] of just 250.0 cubic centimeters. Fuel was supplied via a double overhead cams/twin [[cam]] (dohc).
The engine was a [[liquid cooled]] single cylinder, two-stroke.


==Drive==
==Drive==