2001 yz426 starting problems

4 replies to this topic
  • catesrc@aol.com

Posted May 10, 2001 - 10:50 PM


Man this bike is hard to start....
any one have tips? A tried and true drill?

  • Guest_Guest_*

Posted May 10, 2001 - 11:11 PM


yes. I had one that was a plug fouler and after a new carb, and some jetting it starts on the first or second kick and runs great. So here is the drill. If you are not fouling plugs, turn the gas on, pull the choke, and then kick to top dead, pull comp. release, kick it over 20 deg. or about three inches, and then give it a full kick. That should start within 3 kicks, if not check your plug and if its fouled it won't start. Then you need to read the "foul mouth foul plug" entry and fix that problem. Good luck.

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  • YZ400Court

Posted May 11, 2001 - 07:16 AM


Check out this link to the tech section. There are two posts on bike starting there. Let me add, NEVER touch the throttle, and ALWAYS wear your riding boots.

Pretend it's flat and give it the gas.

  • boxsterboy

Posted May 11, 2001 - 07:28 AM


Press the kickstart untill you feel resistance. Then pull in the decompression lever and mover the kick start 1 to 2 inches more. Left off the decompression and let the kick start move back up to the top. Kick it and it shall start.

Do NOT give it gas. It will kick back on you and not start. Just pull the choke out if its cold outside.

If it does not start repeat process. I can start mine every time with one kick with mochissons on.

01 WR426 WR timing, uncorked.

  • Tom426

Posted May 11, 2001 - 02:37 PM


My 01 was hard to start also. I changed the pilot jet from the stock #42 to a #48 and turned the fuel screw out one turn from closed. That made a HUGE difference in starting. Infact, there is no need to use the hot start button anymore.
These bikes come lean from the factory for some reason.

I got this info from this board BTW.

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