Where's the throttle and the spark plug?

You can find the throttle along the throttle line. The aluminum at the end of the throttle line is the throttle. Spark plugs are just a few wires that appear evenly on the engine. When the wire was pulled out, the spark plug was exposed. I wonder if you can understand me when I say this? I hope you can choose to take my advice and help me upgrade my medal level. Thank you.