I have a Chinese Atv that I just bought and I blew out the starter trying to get it running so I ordered a new one on eBay and installed it and it was ok at first but it's now not cranking fast enough to start even if you jump it with a car battery but it cranks plenty fast with the spark plug out i dont understand why I am having soo many issues finally I have fuel and spark but can't even try to crank it. Wish it wasn't electric start. Please help!

 

Update it cranks very slow even with the plug out. The starter is new from eBay did I kill it already by using a car battery to start the Atv instead of the little battery. Is there a hd version of the two bolt starter what is the best one to buy?

 

This is a kids quad 50cc Honda knock off

 

Is this thing new or old? If it is new have you changed out the oil they use to ship? If its used have you checked to see if it has oil? Does it have a battery in it or are you just trying to get it running with a car battery? Are they fully charged? Sounds like you have a week connection or bad battery creating voltage drop so its not giving the starter enough juice

 

It's older and the oil was recently changed by previous owner. It has a battery in it and the battery's are fully charged. I have also added extra grounds and a switch straight to the starter with a push button to start it in order to bypass anything.