Re: Motor Refuses to start
I hate to jump in here and add my two cents after you have had so many members trying to help you. Someone mentioned to you that if you put a little gas into the sparkplug hole the bike should start. It is true, I would bet that this bike would start with the carb off the bike by putting fuel into the sparkplug hole.
If there is a broken KEY on your magneto (left side, front cover) the engine MAY spark but at the wrong time.
Also, in my snowmobiling days, I found that a sparkplug would spark when out of the engine but under compression, it would not start or even fire up.