If it starts better with the throttle open its likely your pilot is rich. What are you running for a pilot and what is the air screw on the carb set at? Also did you adjust the slide height?
Your chain looks like it needs adjusted or replaced its almost saging to the ground.
Get in the habit of turning off the pet
**** every time you stop. If it starts quicker by holding the throttle open, the engine is flooded or like Bad Moon said that the air screw setting or pilot jet may be too rich. The air screw setting should be about 1 1/4 to 2 turns out and the pilot in the range of 22.5 to 30.
I believe the air screw is out 2 turns. I will pull the pilot to see what is in it. I am not sure about slide height adjustments. How do I determine that? I have never had to do that before. I just adjust the throttle cable and fine tune with the idle screw on the side.
You are 100% correct about the chain! I ordered one for an 87 and they sent one for an 89. I need to shorten it two links and then adjust. I was taking a big chance riding it that way. Not smart. It will be adjusted properly before I ride it again.