Difference between revisions of "Yamaha IT250"

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The [[Yamaha Motor Corporation|Yamaha]] '''IT250H''' was produced in 1981. It has an air-cooled single cylinder [[two-stroke engine]] with six speed [[gearbox]]. Suspension is 32mm front forks, with monoshock and aluminium [[swingarm]] at the rear. The IT was made for enduro use, although it was used with success for trail riding and [[motocross]].
{{Motorcycle
|name            = Yamaha IT250
|photo= yamaha-it250-1980-1983-4.jpg
|aka              = IT250E, IT 250 E, IT 250
|manufacturer    = Yamaha
|parent_company  =
|production      = 1978 - 1982
|model_year      =
|predecessor      =
|successor        =
|class            = Enduro
|engine          = 250cc single cylinder, two-stroke
|bore_stroke      = 71.1mm x 71.1mm
|compression      = 7.9:1
|top_speed        = 68 mph (110 km/h)
|power            = 10.06 HP (7.5 KW) @ 5500RPM
|torque          = 10.33 ft/lbs (14.0 Nm) @ 5500RPM
|ignition        = cdi
|spark_plug      = {{sparkplug|NGK B9EV}} '77 , '78 , '79 , '80 , '83<br />{{sparkplug|NGK B9EGV}} '81-82
|battery          =
|transmission    = Gear box: 6-speed <br>
Final Drive: [[chain]] <br>
Clutch: wet plate <br>


|frame            =
|suspension      =Front: conventional forks <br>
Rear: mono-x triangular swingarm
|brakes          =Front: expanding [[brake]] (drum brake). cable <br>Rear: expanding brake (drum brake). mechanical link
|front_tire      = {{tire|3.00-21}} '77 , '78 , '79 , '80 , '81-82 , '83
|rear_tire    = {{tire|140/80-18}} '83<br />{{tire|6705}} '80 , '81-82<br />{{tire|4.50-18}} '77 , '78 , '79
|rake_trail      =
|wheelbase        = 57.09 inches (1450 mm)
|length          = 86.81 inches (2205 mm)
|width            = 35.0 inches (889 mm)
|height          =
|seat_height      = 36.42 inches (925 mm)
|dry_weight      = 246.04 pounds (111.6 Kg)
|wet_weight      = 95.3 kg
|fuel_capacity    = 3.2 Gallon (12.11 Liters)
|oil_capacity    =
|recommended_oil= Yamalube 10w-40
|fuel_consumption = 3.92 liters/100 km (25.5 km/l or 60.01 mpg)
|turning_radius  =
|related          = [[Yamaha IT125]]<br /> [[Yamaha IT175]]<br /> [[Yamaha IT200]]<br /> [[Yamaha IT250]]<br /> [[Yamaha IT350]]<br /> [[Yamaha IT400]]<br /> [[Yamaha IT425]]<br /> [[Yamaha IT490]]<br /> [[Yamaha IT500]]<br /> [[Yamaha TT250]]
|competition      =
|final_drive= {{chain|520x104}} ‘77<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>
|front_sprocket= 13T ‘77<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>
|rear_sprocket= 46T ‘77<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]] IT250''' was a is a 175[[cc]], [[single cylinder]], [[two stroke]], [[reed valve]], [[motocross motorcycle]] manufactured by [[Yamaha]] between 1978 and 1982. It could reach a top speed of 68 mph (110 km/h). Max [[torque]] was 10.33 ft/lbs (14.0 Nm) @ 5500 RPM. Claimed [[horsepower]] was 10.06 HP (7.5 KW) @ 5500 RPM. 
==Engine==
The engine was a [[air cooled]] single cylinder, two-stroke. A 71.1mm [[bore]] x 71.1mm [[stroke]] result in a [[displacement]] of just 247.0 cubic centimeters. Fuel was supplied via a membrane. 
==Frame==
It has a six speed [[gearbox]], suspension is 32mm front forks, with monoshock and aluminum [[swingarm]] at the rear. The IT was made for enduro use, although it was used with success for trail riding and motocross.
==Drive==
The bike has a 6-speed transmission. Power was moderated via the wet plate. 
==Chassis==
It came with a -21 front [[tire]] and a -18 rear tire. Stopping was achieved via expanding brake (drum brake). cable in the front and a expanding brake (drum brake). mechanical link in the rear. The front suspension was a  conventional forks while the rear was equipped with a mono-x triangular swingarm. The IT250 was fitted with a 3.2 Gallon (12.11 Liters) fuel tank. The bike weighed just 246.04 pounds (111.6 Kg). The wheelbase was 57.09 inches (1450 mm) long. 
==1980 - 1983 Yamaha IT 250==
<gallery mode="slideshow">
File:yamaha-it250-1980-1983-4.jpg|600px|1980 - 1983 Yamaha IT 250
File:yamaha-it250-1980-1983-3.jpg|600px|1980 - 1983 Yamaha IT 250
File:yamaha-it250-1980-1983-2.jpg|600px|1980 - 1983 Yamaha IT 250
File:yamaha-it250-1980-1983-1.jpg|600px|1980 - 1983 Yamaha IT 250
File:yamaha-it250-1980-1983-0.jpg|600px|1980 - 1983 Yamaha IT 250
</gallery>
Based on the all-conquering [[:Category:Yamaha YZ series|YZ motocrossers]], the IT 250 uses such high-tech innovations as YEIS, capacitor discharge ignition, a chrome-moly double-cradle frame and Yamaha`s exclusive Monoshock suspension.
==In Media==
* [https://motopixel.org/pixel/lexecutrice#yamaha-it250 L'exécutrice]
* [https://motopixel.org/pixel/lie-mo-zhe#yamaha-it250 Lie mo zhe]
* [https://motopixel.org/pixel/empire-of-ash#yamaha-it250 Empire of Ash]
* [https://motopixel.org/pixel/die-ludolfs-4-bruder-aufm-schrottplatz#yamaha-it250 Die Ludolfs - 4 Brüder auf'm Schrottplatz]
* [https://motopixel.org/pixel/skeeter#yamaha-it250 Skeeter]
* [https://motopixel.org/pixel/wonder-woman#yamaha-it250 Wonder Woman]
[[List of Yamaha motorcycles]]
==See Also==
*[[Yamaha TT250]]
*[[User:Ronbuell|Ronbuell's Hybrid IT250/TT250]]
==References==
{{reflist}}
{{motorcycle-stub}}
{{Yamaha}}


[[Category:Yamaha motorcycles|IT250H]]
[[Category:Yamaha motorcycles|IT250H]]
{{motorcycle-stub}}
[[Category:1980s motorcycles]]
[[Category:Motocross motorcycles]]
[[Category:250cc displacement motorcycles]]
[[Category:250cc 2-stroke motorcycles]]
[[Category:250cc Single cylinder motorcycles]]
[[Category:Single cylinder motorcycles]]
[[Category:Single cylinder 2-stroke motorcycles]]
[[Category:2-stroke motorcycles]]
[[Category:Yamaha IT series]]
[[Category:1970s motorcycles]]
[[Category:1980s motorcycles]]

Latest revision as of 20:01, 23 November 2019

Yamaha-it250-1980-1983-4.jpg
Yamaha IT250
Manufacturer
Also called IT250E, IT 250 E, IT 250
Production 1978 - 1982
Class Enduro
Engine
250cc single cylinder, two-stroke
Bore / Stroke 71.1mm x 71.1mm
Compression ratio 7.9:1
Top Speed 68 mph (110 km/h)
Horsepower 10.06 HP (7.5 KW) @ 5500RPM
Torque 10.33 ft/lbs (14.0 Nm) @ 5500RPM
Ignition cdi
Spark Plug NGK B9EV '77 , '78 , '79 , '80 , '83
NGK B9EGV '81-82
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: wet plate
Final Drive Chain: 520x104 ‘77[1]
Front Sprocket 13T ‘77[1]
Rear Sprocket 46T ‘77[1]
Suspension Front: conventional forks
Rear: mono-x triangular swingarm
Brakes Front: expanding brake (drum brake). cable
Rear: expanding brake (drum brake). mechanical link
Front Tire 3.00-21 '77 , '78 , '79 , '80 , '81-82 , '83
Rear Tire 140/80-18 '83
6705 '80 , '81-82
4.50-18 '77 , '78 , '79
Wheelbase 57.09 inches (1450 mm)
Length 86.81 inches (2205 mm)
Width 35.0 inches (889 mm)
Seat Height 36.42 inches (925 mm)
Weight 246.04 pounds (111.6 Kg) (dry), 95.3 kg (wet)
Recommended Oil Yamalube 10w-40
Fuel Capacity 3.2 Gallon (12.11 Liters)
Fuel Consumption 3.92 liters/100 km (25.5 km/l or 60.01 mpg)
Related Yamaha IT125
Yamaha IT175
Yamaha IT200
Yamaha IT250
Yamaha IT350
Yamaha IT400
Yamaha IT425
Yamaha IT490
Yamaha IT500
Yamaha TT250
Manuals Service Manual


The Yamaha IT250 was a is a 175cc, single cylinder, two stroke, reed valve, motocross motorcycle manufactured by Yamaha between 1978 and 1982. It could reach a top speed of 68 mph (110 km/h). Max torque was 10.33 ft/lbs (14.0 Nm) @ 5500 RPM. Claimed horsepower was 10.06 HP (7.5 KW) @ 5500 RPM.


Engine[edit | edit source]

The engine was a air cooled single cylinder, two-stroke. A 71.1mm bore x 71.1mm stroke result in a displacement of just 247.0 cubic centimeters. Fuel was supplied via a membrane.

Frame[edit | edit source]

It has a six speed gearbox, suspension is 32mm front forks, with monoshock and aluminum swingarm at the rear. The IT was made for enduro use, although it was used with success for trail riding and motocross.

Drive[edit | edit source]

The bike has a 6-speed transmission. Power was moderated via the wet plate.

Chassis[edit | edit source]

It came with a -21 front tire and a -18 rear tire. Stopping was achieved via expanding brake (drum brake). cable in the front and a expanding brake (drum brake). mechanical link in the rear. The front suspension was a conventional forks while the rear was equipped with a mono-x triangular swingarm. The IT250 was fitted with a 3.2 Gallon (12.11 Liters) fuel tank. The bike weighed just 246.04 pounds (111.6 Kg). The wheelbase was 57.09 inches (1450 mm) long.

1980 - 1983 Yamaha IT 250[edit | edit source]

Based on the all-conquering YZ motocrossers, the IT 250 uses such high-tech innovations as YEIS, capacitor discharge ignition, a chrome-moly double-cradle frame and Yamaha`s exclusive Monoshock suspension.

In Media[edit | edit source]

List of Yamaha motorcycles

See Also[edit | edit source]

References[edit | edit source]

  1. 1.0 1.1 1.2 2019 Western Power Sports Catalog. Western Power Sports. 2019.