not sure of the size in the kit and the chain has no markings it will fit on the sprocket but at 1/2 way to 3/4 away around it starts to ride up on the teeth and not fall in between the teeth
You need 1/2" pitch chain to fit which all of the chains below are.
Measure between the side plates on your chain.
1/8" = 410 or bicycle chain which is too narrow for your sprocket
Both of these are recommended and will fit.
3/16" = 415 chain
1/4" = 41 chain
Some kits like Skyhawks come with narrow 410 bicycle chain.
What kit brand do you have and where did you buy it from?
Does your chain fit the sprocket that came in your kit?