Difference between revisions of "Yamaha YZ250F"
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Latest revision as of 21:51, 15 August 2021
The Yamaha YZ250F was introduced in 2001 as a 4-stroke crossover model to replace the 2-stroke Yamaha YZ250. It should be noted that this step was taken by the entire Japanese "four" motorcycle manufacturers, with the only difference that 2-stroke cross-country motorcycles from Yamaha were so successful that they continue to be produced in parallel with 4-stroke and even compete in the same racing class.
The Yamaha YZ250F was based on a 1-cylinder 4-stroke liquid-cooled engine, 249 cm³, with 5 valves, producing about 42 hp. power and 29 Nm of torque.
In 2006, the model undergoes a major update, the main innovation of which was the transition from steel to aluminum frame. From that moment on, the YZ250F model became a full-fledged player in the market of cross-country models with an engine capacity of up to 250 cc.
In 2008, the model receives a new engine that has been further optimized to slightly increase maximum power and torque characteristics.
For 2010, the Yamaha YZ250F gets a new fork and relocates the engine in the frame to lower the center of gravity and improve handling. Overall optimization allowed achieving a record curb weight of 102 kg.
2014 marked the next generation of the Yamaha YZ250F. The motorcycle received a new front fork, a new engine with a fuel injection system and an increased compression ratio (from 12.5 to 13.5), a 4-valve cylinder head (instead of a 5-valve). In 2016, the model received a new front brake disc (diameter increased from 250 to 270 mm).
For 2019, Yamaha is revamping the YZ250F with a new engine (compression ratio increased from 13.5 to 13.8), a new rear shock absorber (settings changed) and an electric starter.
Based on the Yamaha YZ250F, the enduro series Yamaha WR250 was built.
Main competitors:
Photos
Specifications
Specifications Yamaha YZ250F:
| Model | Yamaha YZ250F |
|---|---|
| Motorcycle type | cross |
| Release year | 2001+ |
| Frame | Steel Half Duplex - YZ250F (2001-2005)
Aluminum Half Duplex - YZ250F (2006+) |
| Engine type | 1-cylinder, 4-stroke |
| Working volume | 249 cm³ |
| Bore / stroke | 77.0 x 53.6 mm |
| Compression ratio | 12.5 - YZ250F (2001-2013)
13.5 - YZ250F (2014-2018) 13.8 - YZ250F (2019+) |
| Cooling | liquid |
| Number of valves per cylinder | DOHC, 5 Valves - YZ250F (2001-2013)
DOHC 4 Valve - YZ250F (2014+) |
| Fuel supply system | Carburetor, 1x Keihin FCR-MX37 - YZ250F (2001-2013)
Injector, 1x 44 mm - YZ250F (2014+) |
| Ignition type | CDI - carburetor versions
TCI - injection versions |
| Maximum power | 42.0 h.p. (30.9 kW) @ 10,500 rpm - YZ250F (2001-2007)
42.8 h.p. (31.5 kW) @ 10,500 rpm - YZ250F (2008-2010) |
| Maximum torque | 28.4 Nm (2.9 kg-m) @ 8500 rpm - YZ250F (2001-2007)
29.5 Nm (3.0 kg-m) / 8500 rpm - YZ250F (2008-2010) |
| Gearbox | 5-speed |
| Drive type | chain |
| Front tire size | 80 / 100-21 51M |
| Rear tire size | 100 / 90-19 57M |
| Front brakes | 1 disc, 250mm, 2-piston caliper - YZ250F (2001-2015)
Single disc, 270mm, 2-piston caliper - YZ250F (2016+) |
| Rear brakes | 1 disc, 245 mm, 1-piston caliper |
| Front suspension | 48mm Inverted Fork (Fully Adjustable), 300mm Travel - YZ250F (2001-2013)
Inverted 48mm Fork (Fully Adjustable), 310mm Travel - YZ250F (2014+) |
| Rear suspension | Swingarm with monoshock (fully adjustable), stroke - 315 mm - YZ250F (2001-2005, 2014-2018)
Swingarm with monoshock (fully adjustable), travel - 310 mm - YZ250F (2006-2009) Swingarm with monoshock (fully adjustable), travel - 317 mm - YZ250F (2019+) |
| Motorcycle length | 2165mm - YZ250F (2001-2005, 2014-2018)
2176 mm - YZ250F (2006) 2160 mm - YZ250F (2007-2013) 2175mm - YZ250F (2019+) |
| Motorcycle width | 827mm - YZ250F (2001-2005)
815mm - YZ250F (2006) 825mm - YZ250F (2007+) |
| Motorcycle height | 1303mm - YZ250F (2001-2005, 2010-2013)
1292 mm - YZ250F (2006) 1299mm - YZ250F (2007-2009) 1280mm - YZ250F (2014-2018) 1285 mm - YZ250F (2019+) |
| Wheelbase | 1475mm - YZ250F (2001-2005, 2014+)
1485 mm - YZ250F (2006) 1469 mm - YZ250F (2007-2009) 1466 mm - YZ250F (2010-2013) |
| Saddle height | 998mm - YZ250F (2001-2005)
983mm - YZ250F (2006) 984mm - YZ250F (2007-2009) 988mm - YZ250F (2010-2013) 965 mm - YZ250F (2014-2018) 970mm - YZ250F (2019+) |
| Minimum ground clearance | 382mm - YZ250F (2001-2005)
369mm - YZ250F (2006) 370mm - YZ250F (2007-2009) 375 mm - YZ250F (2010-2013) 325 mm - YZ250F (2014-2018) 335mm - YZ250F (2019+) |
| Acceleration to 100 km / h | |
| Maximum speed | |
| Fuel tank capacity | 8.0 L - YZ250F (2001-2005)
7.0 L - YZ250F (2006-2009) 6.4 L - YZ250F (2010-2013) 6.2 L - YZ250F (2019+) |
| Motorcycle weight (dry) | 93.5 kg - YZ250F (2006)
92.7 kg - YZ250F (2007-2009) |
| Motorcycle weight (curb) | 104.5 kg - YZ250F (2001-2005)
102.0 kg - YZ250F (2010-2013) 105.0 kg - YZ250F (2014-2018) 106.0 kg - YZ250F (2019+) |
Yamaha Off-Road Motorcycles
| Yamaha | ||
|---|---|---|
| 85-150 см³ | YZ85 · WR125 · YZ125 | |
| 200-250 см³ | TW200 · TW225 · Serow 225 · Serow 250 · TT-R250 · WR250F · XG250 · YZ250 · YZ250F | |
| 400-500 см³ | WR450F · YZ450F | |
| 600-750 см³ | XT660R | |
Documentation