You shouldn't need help to change out spark plugs on a 230. They are under the red cover on the top of the engine. Pull the cover and see what's under there, pull one plug at a time so you don't mix wire. (Shouldn't happen anyway) There are two plus per set, and if I remember you have to unscrew a coil for each pair, not a big deal, just go for it, it's easy.benzsesco said:I've got a 230. If anyone has a link to a guide or DIY site would be awesome.