Magoo, We have experienced that and the easiest way to stop it is to buy the Outerwears pullstart cover. However you can glue a piece of screen over the pullstarter this will help also. Good luck and enjoy that new baja :wink:magoo said:i found with mine when i removed the cowlings that it would allow small rocks and stuff into the cooling fan/flywheel. i had a big rock get into the fan/flywheel and stop the engine. i had to pull it all down to get the dam thing out. it broke a couple of fins off too.