When did the Yamaha YZ250 2 stroke come out?
1977: Yamaha caught back up quickly. A whole new bike was released with a super-small motor, a lighter frame, and more travel. The fuel tank was plastic and the swingarm was steel. The 1978 model looked almost identical, but had more travel and an aluminum swingarm.
Why does my YZ250 dirt bike not start?
One of them is most likely the cause. The fuel is fine, the last time I rode, I ran it out of gas. And the gas I put in was new. The filter is filthy, I tried to buy a UNI to replace it but got ripped off on eBay. But this shouldn’t be the problem since I had the filter off? The plug is new, but I didn’t check to see if it was sparking.
What kind of damping does a Yamaha YZ250 have?
In what was an Edison light-bulb moment back in 2006, Kayaba switched the YZ250 forks from 70-percent position-sensitive damping to 90-percent speed-sensitive damping. It became the Holy Grail of motocross suspension. All following Yamaha forks (2006 to 2020) have benefited from Yamaha’s Speed-Sensitive System’s (SSS) linear damping.
What makes a Yamaha YZ250 motocross bike so light?
A light aluminum frame houses the patented YPVS™-equipped ripper of an engine for an awesome power-to-weight ratio. Ultra light weight means nimble handling and less fatigue.
Where did the Yamaha YZ250 2 stroke bike come from?
The very first YZ didn’t come out of a well-lit R&D room at a Japanese factory. It was built in Southern California by Don Jones for his son Gary. Yamaha let the Jones clan go wild on the existing DT-1 two-stroke. The bike that resulted won the first AMA motocross championship, then was shipped back to Japan to become the first production YZ.
Is the Yamaha YZ250 survival of the fittest?
SURVIVAL OF THE FITTEST: THE YAMAHA YZ250 2-STROKE STORY. The history of the Yamaha YZ250 is the history of motocross in America. No other machine was the platform for so many world-shaking innovations. The list of firsts goes on and on: reed valves, single-shock suspension and power valves all started with the Yamaha.
Who are some famous riders on the Yamaha YZ250?
Perhaps more than anything, the YZ250 is known for the legendary riders who used it to win. The list includes Gary Jones, Bob Hannah, Mike Bell, Ricky Johnson and Jeremy McGrath, to name a few Americans. In Europe, Hakan Andersson, Hakan Carlquist and even Danny LaPorte gave the YZ its early championships.
Who was the first Yamaha YZ250 Supercross champion?
Pierre Karsmakers won the inaugural Supercross series for Yamaha in 1974, but the next American YZ250 champion didn’t come along until 1977, when Bob Hannah moved up to the 250 class and utterly dominated motocross for the next three years. In that time he won three Supercross titles, two outdoor championships and had a 22-moto win streak.