04' kickstart occasionally locks up

3 replies to this topic
  • flintlock28

Posted November 17, 2006 - 11:17 AM


My 04', (450) once in a blue Moon, will "lock-up" when kickstarting. What I mean is that on occasion, when kicking her over, the kickstarter will only go so far and then lock -up. I then usually have to put it in gear, and rock it a little too break her loose. It then will work perfectly.....

My buddies 03' does the same exact thing on occasion also.....

I'm assuming it has something to do with the auto-decompression. Do you guys have any tips to prevent this??? I've heard it's better to kick these 450's over slowly, with a full push of the kickstarter, rather than 2 stroke-like with short, fast kicks. Any help appreciated.


  • never59

Posted November 17, 2006 - 12:55 PM


They do start easier going up to top dead center and then an easy kick through, boots will last longer as well. I am not sure if it will prevent the locking that you described. My buddy and I both have 04's and that happens once in a while to both bikes. Not very often though.
If you search this topic you will find many other threads addressing this issue

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted November 17, 2006 - 02:04 PM


Here's one common reason for that

  • flintlock28

Posted November 17, 2006 - 07:52 PM


Thanks for the help guys......

Related Content


05 yz450f not fast enough by RedeyeYZ

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  38 replies

The "going back to the other darkside" adventure... by Monk

Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  113 replies

BIGBORE FOR YZ450F 2006? by Taattie94

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  30 replies

Wilson the Blue Privateer by jetfuel

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.