92 amigo with a start problem
 

i have a 92 amigo and i have a problem starting it. if i use the key the starter will spin but the motor fornt fire but if i hook it to my quad i can pull it 10 feet and drop the cluch and it will start with no problem i have herd it could be the safety on the cluch but i didnt think the starter would even spin if that was bad and i herd the crank sensor does anyone have an idea of what the problem could be the starter is srong and spins the motor good so i dont think its a starter problem