My Honda Rancher 350 will not start

When I first got the four wheeler I just put a new battery in it which was like 3 weeks ago and it ran fine! Until just recently my friend took out the carb to clean it because it had trouble idling, after that it would even turnover it would just keep crank but wouldn’t actually run then 2 days go by and I go to check it then it wouldn’t even start, at all.. someone told me it was the solenoid because I could place a wrench on both of the terminals if the solenoid and it would crank! So I bought another one and it still won’t crank! Another thing I notice is that it’s a electrical shifter on the handle, and the display doesn’t know what gear it’s in but the reverse red light is on and the neutral green light is on idk what’s wrong with it tried everything…and the battery is fully charged so the battery charger says.. please help email me if I do not respond @ justchaseyt@gmail.com , Thank You!