Questions about a benelli buzzer jr

#1
I got this while back, seems to run and ride fine. But it is boggy, and it seems i do not have the correct plug and mix right. Is there anyone on here that knows what gearbox oil to use in this? Also correct mixture? The right plug?
Right now it is running a autolite 255, it is not the right plug. The only research i could find is a few pics.. tags says 1970.



 
Top