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[QUOTE="Faded, post: 903756, member: 38322"] Air leak. The left side crank seal is suspect and cheap/easy to replace otherwise it's probably leaking else where. Either way If you want to be sure you can build your own leak tester to see if your motor is leaking; a lot cheaper than the alternative. [B][U]Leak Tester[/U]:[/B] [url]http://www.dirtrider.net/forums3/showthread.php?t=87952[/url] [B][U]Crank Seal Replacement[/U]:[/B] When you pull in the clutch cable air will leak down the cable into the ignition cavity in the case. Try pulling in the clutch or wriggling the clutch cable where it enters the case with the bike running on the stand. The R's should go up if you can get air around the cable. Sure sign the seal is leaking. If you have a flywheel puller then you're set. Start by removing the four 8mm bolts that hold the ignition cover on and remove the cover. Hopefully you have an impact gun at your disposal. Use it to remove the 17mm nut that holds the flywheel on. After you've removed the nut (and the washer behind it) you can thread your flywheel puller on. Pop the flywheel off. Next remove the two 10mm bolts that hold the stator on and gently pull the stator off. When removing your stator you'll notice a mark on the bottom and one on the cases. These are timing marks and need to be lined up when reinstalling the stator. Don't worry though, unless you've notched the bottom mounting hole and played with the timing prior to this then you should have nothing to worry about. You can either set the stator off to the side or disconnect it and remove it, what ever you want to do. Now you can see the seal. Grab yourself a smallish (1-1/2" or so) wood screw and screw it into the seal. You can use more than one if you'd like (another on the opposite side work well) just make sure you work slowly when getting the screw to grab. After this I heated the case a little with the propane torch and then grabbed the screws with a pair of pliers and pulled the old seal out. I installed the new seal with a dab of grease and a 7/8" (I think) deep well socket, taking care to make sure that it went in straight and to the proper depth outlined in your manual. After the seal is in the it's just a matter of putting everything back together. [/QUOTE]
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