went to a friends house to ride tonight .he has a 99 vmax 600 with 8000 miles ..started his sled and it sounded like it was running on 2 cylinders and after 200 feet it just died ....went to pull the rope and it was locked up tight ...pulled him home and pulled the plugs and motor turned about 3/4 away around and stopped dead like it was catching a ring on the exhaust port ....i was thinking it was the recoil broke and causing this ....so he pulled it a few times and it started to turn over with no problem .except for a little metal to metal rubbing sound ...turned it by hand several times and cleared up and sounded normal ...so we put new plugs in it and it started up ...running on 2 cylinders again ....while running we pulled plugs and found it to be the mag side cylinder ....i am thinking it is either the recoil has come apart causing it to jamb up ...or he cooked the cylinder cause i belive the float on that carb is stuck closed causing it not to get any oil ? carbs were just cleaned a week ago and ran perfect after we cleaned ..also this is a electric start sled but the battery was shot causing the tach not to register til you got it up to 3000 to 4000 rpms ...would a dead battery cause it to olny run on 2 cyilnders ? any suggestion would you might have would be great