I got in a few more minutes of work on the mini bike before the sun went down.
Removing the chain guard was fun. Here I found the typical homeowner lost a hex head bolt and shoved in a small wood screw and called it a day repair.
Look at that massive rear wheel sprocket
What is even more eye opening is the tiny sprocket on the motor, I swear without counting it looked like 5 maybe 6 teeth at most. Obviously these bikes are not made to last the long haul. That tiny sprocket will wear out rapidly.
Old chain removed, not completely caked in rust but in person the whole chain was rust covered which doesn't come out as well in the photograph above.
I spent some time on the bench grinder with wire wheel and manage to knock just about all of the surface rust off.
I just got these in from Amazon since the stores in my city don't stock it in store. So as the sun had set I quickly sprayed down the chain and hung it to dry and called it a day and will do reassembly next time.
