04 ec 300 Jetting

[HuskyDude]

I hope you get your jets figured out. And as far as the air filter goes. If it is damages in any way don't waste you time and buy a new one. For the price I always have two. It is a lot easier cleaning two filters at once. And having a spare air filter around is not a bad thing either.

[lordfeyr]

I picked up a pre-oiled notoil filter for a CR250 and it worked good.

I plan on ordering gas/gas specific filters to keep around since I dont really want to deal with the notoil cleaning etc...

Here are a couple pics of a new plug with a good ride on sunday. I went to Boulder Hills in Boulder City Nevada. Good times!

Might be hard to tell but the plug is black and just slightly wet.

Using the jetting I posted earlier I adjusted the idle a bit higher and adjusted the mixture screw about half a turn out. Right now its sitting at 2 turns out.

Does this look good to you guys or should I be aiming for that tan/brown color? Maybe taking my pilot down another size to a 38?

[iancp5]

Unless you do a proper plug chop the colour doesn't mean much unless it comes out lean or really wet. A bike will often need to be set rich at idle so it will pull well when opening the throttle. I always found a 38 pilot best at sea level so in theory you might even be able to run a 35 but it is better to be a tad rich than a tad lean. Take a step at a time. I wouldn't worry if it was coming out a bit black but not wet at idle. Best way is to get a few jets and try them just be real careful going lean on the main or needle - step at a time and do proper plug chops. Last thing you want is lean at revs and high throttle openings. If you can consult the jet database on here get a feel for what people are using at your altitude, also check the correction factors for altitude from known good setups at sea level. The standard UK (sea level 20 deg C) is 38P, 178M & N1EF needle on 2 or 3. But I found better is 40P, 180M, CCK needle on 2 or 3.