The Tuul Crib 7,336 #1 Posted March 10, 2020 So just recently I got this 12 horse put back together after a rebuild. Everything is going fine it first started easily popped right off. after running it a while I shut it off and it sounds like the battery is dead. Check the battery it's brand new anyway read 12.67 checked and cleaned all the connections. lt still turns over one revolution and then stops. Otherwise the motor runs perfect when it's running any suggestions? And I did take the cam cover off and check the ACR spring and it is still intact Share this post Link to post Share on other sites
oldredrider 2,548 #2 Posted March 10, 2020 Check your valve settings. Especially the exhaust valve. May not be opening enough for the compression release to work properly. 1 Share this post Link to post Share on other sites
953 nut 55,065 #3 Posted March 10, 2020 (edited) Did you remove the paint from the point where the ground wire connects to the engine block? Edited March 10, 2020 by 953 nut 2 1 Share this post Link to post Share on other sites
The Tuul Crib 7,336 #4 Posted March 10, 2020 When I first started it and ran it a while changed out the first batch of oil then I checked the valves after that and they were both set to spec. Do I need to go to the max on the exhaust valve? And also I will have to check the paint thing on the points. Never thought about that. Like I said it runs great when it's running no problems it's just a starting issue. Share this post Link to post Share on other sites
Achto 27,502 #5 Posted March 10, 2020 Just throwing darts here but. If this is an engine with points check your gap on them. If the gap is too wide your timing would be too far advanced causing it to fire against itself. I had this issue with a pull start engine & it would literally rip the pull cord out of you hand when it would fire. Closed the gap on the points a little & life was good. 2 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,032 #6 Posted March 10, 2020 21 minutes ago, The Tool Crib said: Do I need to go to the max on the exhaust valve? Minimum valve clearance gives more compression release. The bump the cam provides just closes the gap if too wide so minium or no valve movement. Garry 1 2 2 Share this post Link to post Share on other sites
Pullstart 62,783 #7 Posted March 10, 2020 1 hour ago, Achto said: Just throwing darts here but. If this is an engine with points check your gap on them. If the gap is too wide your timing would be too far advanced causing it to fire against itself. I had this issue with a pull start engine & it would literally rip the pull cord out of you hand when it would fire. Closed the gap on the points a little & life was good. That was my thoughts too. Possibly too far advanced timing 1 2 Share this post Link to post Share on other sites
The Tuul Crib 7,336 #8 Posted March 10, 2020 Got home and pulled the points back off and cleaned all the paint offin the motor underneath. Set the gap at 18 and fixed the problem. Learn as you go thanx yall!! Say.... you wouldnt have the winning lotto numbers would you? 2 2 1 Share this post Link to post Share on other sites
Achto 27,502 #9 Posted March 11, 2020 2 hours ago, The Tool Crib said: Say.... you wouldnt have the winning lotto numbers would you? I do happen to have the winning numbers. Just don't know when they will finally decide to pick them. 1 2 Share this post Link to post Share on other sites
