- May 24, 2007
I am a newbie to everything dirtbike. I just had a 1983 Yamaha YZ400 given to me. I know nothing about it. I noticed there are 2 spark plugs, but only one wire. What is the 2nd plug for, or is there supposed to be 2 wires? The bike seems to start after one kick if I gun it as I am kicking it over. It seems to have a lot of power and runs good, I guess I am just wondering what the second plug is for. Also, do I need to mix oil and gas? There is a spot on the right side of bike to add oil, what oil do I use? Do I just put regular 2 stroke oil in there and not mix with gas? How do I change the oil? I'm sure I will have more questions, but let's start with these. Thanks.