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2017 Cub Cadet Challenger 750 Timing Set/ engine starting questions

Challenger750HP
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Challenger750HP

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I have a 2017 Cub Cadet Challenger 750 and I have been watching videos on the top end rebuild of the same engine. So, I have one question about it and I’m not sure if someone could help or not. I’m having trouble getting mine to fire over. Could anyone explain how to set the timing on both the flywheel and the cam? I think I may be setting the cam in an incorrect direction. When I put my foot on the brake to start the engine turns over and I have spark and fuel but I cannot get it to fire. The timing chain was off at first and I reinstalled it and tightened it with the tensioner and everything looks good but I cannot figure out how to set the timing perfectly to make it start up. Do you have any suggestions? Or any thoughts on what’s stopping it from firing up? I appreciate all of your help in advance!!

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