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  1. Maintenance
    Hello, I have a 2012 YFZ450R that will start up fine when cold but after it warms up it starts to run rich then eventually shuts off and dies. Fuel pump was replaced and injector was cleaned as well as fuel rail. There are times when it runs fine and the idle sounds great but eventually it...
  2. YFZR-X Powertrain
    Ok so to start i just got a 19 yfz450r not the first owner.. I myself am very new with small engines however i am a heavy truck mechanic. So i went to get my quad from my friends house because i was to lazy to load it up in my truck the night prior since i unloaded it for him to take it...
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