Went out yesterday with the above settings, spooge is only running halfway down the muffler now. It's definitely cleaned up but still dies at the peak, gonna go down to a 168 and might lower the needle one groove.

^^^^If the above has no impact I'm considering taking it back to the dealer for them to take a look at. Even with the 170 main in it I doubt that it should be dying/no power at wot.

I will have only been out on it 5 times at that stage, are dealers usually receptive to taking a look at it gratis or should I prepare for the worst??

Thank you for reporting back. I will probably try exactly your set up on a friends bike. He already changed the 175 with which the bike came to a 172 but with a 42 pilot. We ride at 200 meters (about 660 feet) and temperature is currently only 15 to 18 C (60 to 65F). I guess that should work well as he almost never rides WOT and has a lot of spooge. When it was warmer his bike sounded very rich from down low to top with the standard N1EF.

Ec300 Replica 2013 ?supermotard?
Sealevel 0-30?C ~80% humidaty
178/42 NEDH #3
Air +-2
Bit rich in summer under 1/4 throttle.
Caramel brown spark en power everywhere.
110kms hitting reserve
Top speed: 147km/u 13-40 gear

- EC300, m.y. 2009
- altitude: 100 m above sea level
- riding temp: 3...20 C

- main: 175
- pilot: 40
- needle: E3CJ, clip at highest notch

Feels like a different bike after N1EH needle. Wheelies in 2nd gear...
Thanks to jakobi & F5 for advice.

Hello all,

Just finished a great single track ride but I still have some jetting work to do. Here is what I ran today. Please let me know what you think?

Bike year & model = 2018 EC250 (stock except for turbine 2 w/ spark screen)
Temperature (degF) =65 to 80
Elevation (feet) = 1300 to 1500 feet
Main jet =175
Pilot jet =42
Needle & notch =NEDW 3rd from top
Air screw setting =1.5
Throttle valve/slide =stock

Results: Everything felt great at 65 degrees. Had a momentary off idle bog as the day get warmer but it was only noticeable when at idle then whacking the throttle. Never noticed while under load. Tried everything from 3 out to 1/2 in on the air screw but it nothing eliminated the bog. Seemed to have better throttle response at 1.5 to 1 in.

Any recommendation for where I should start? I was thinking about dropping the clip one slot first as I don't have a larger pilot at the moment. Thank you in advance for any advise.

Not sure if this has been posted or is any help to you folk in Oz or NZ, maybe helpful to others that are in a similar situation as us.


https://i.postimg.cc/3NyS3NQQ/2019-G...NG-AU-NZ-1.jpg

Tried some new jetting at the MX track yesterday.
2018 EC300
MJ: 175
PJ: 40
AS: 1.5
NEDW: #2

Temp range: 20c -30c

Air screw started at 2.25 but it kept backing out during the day so I'm not 100% on its position. Anyway, best I've seen my plug looking since I bought the bike.
https://i.postimg.cc/NK3YFxcc/20200224-175744.jpg

Almost identical to me, except I run a 172 main.

How's your plug look Nate?

I'd like to compare this result to riding bush where I tend to use the bottom 50% of the throttle as opposed to the top 75% on the track.