help plz (07 yz250f or 450

6 replies to this topic
  • Shook187

Posted March 16, 2009 - 02:00 PM


hi8 i just got a bike it had yz450f sticker on it but ive ridden one b4 and this one doesnt seem as powerful, how do i tell if its a 250 or 450? it also doesnt start first kick takes 10-15 b4 it starts, it also backfires wen i let off throttle. i dont really know anything about bikes, any info would be much apreciated TY

  • grayracer513

Posted March 16, 2009 - 02:24 PM


The water pump on a YZ450 has a steel tube bolted to it to connect the hose onto. The YZ250F has the hose connection built onto the pump cover; not a separate part.

  • Justin89

Posted March 16, 2009 - 02:38 PM


What year is it?

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  • Shook187

Posted March 16, 2009 - 02:45 PM


its an 07, i dont know where the water pump is. but are u talking about the hoses that connect from the radiator to the engine? there is a steel pipe that can be un bolted connected to those hoses.

  • Shook187

Posted March 16, 2009 - 02:47 PM


like the hoses come off the radiator then to the steel pipe thing then its bolted to the engine

  • grayracer513

Posted March 16, 2009 - 02:49 PM


The water pump is located on the right side of the engine, below the exhaust pipe, where the radiator connects.

Here, download a manual and look it over:

  • Shook187

Posted March 16, 2009 - 02:52 PM


oh awsome thank you very much

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