Can't start this bike
Hello I inherited this bike and for the life of me I can't figure out how to get it to start it is a 1978 scorpion scx 2 and when I go to start it the engine will put and sound like it's trying to run but will never actually turn over after I let go of the clutch in the video the engine stops when I let go of the clutch I tried pushing and also pedaling on the stand to try to get this engine to start but it won't it will just put and act like sound like it wants to start but when I let go of the clutch it won't start so far I have engaged the cold start lever which had no effect and changed out the spark plug to a new spark plug and that had no effect I really need some help I can't find any information on how to fix this I will also provide a photo of the engine in the comments and any other pictures you guys need thank you so much for your help in advance