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barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
11/25/2024 5:05am there is the sparkplug before the changes, too lean at mid en high RPM, the sound not good ( metallic) with this settings : 520 37.5 43-75 2eme cran S-4 5,75 slide As: 1.25 The photo below is with the jettings updates
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barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
11/25/2024 2:22am Update I rode this saturday I was too lean, so I adjusted the needle, main jet and air screw Sea Level, 2°celcius, lots of wind Deep sand track (Loon-plage, FRANCE) 300 SXS 2018 with ovalized carburetor MJ 560 PJ 37.5 AS 1.0 Slide 5.75 Needle 43-75, clip 3 S4 Premix 40:1, Motul 800 ( 50/50 Avgas/SP98) 
barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
11/15/2024 11:22am 300 sxs 0m elevation , ~ 5°c This is my jetting 520 37.5 43-75 2eme cran S-4 5,75 slide As: 1.25 I ride deep sand
barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
7/2/2024 9:39am Hi guy, I will need some information. Unfortunately the 300 sxs cylinder broke. Do you know the reference for this one? Maybe a 300 exc 2017 carburetor cylinder is identical? I am attaching some photos of the piston cylinder.
FGR01 Liked a reply to forum topic 125/150/250/300 KTM/HUS/GG jetting thread
4/1/2024 12:51am
OK, so it's running good? Yeah 44-75 essentially has grooves cut 1 whole clip richer than 42-75. So, 44-75(2) basically equals 42-75(3). This might not be a bad thing since you're in sand. But, like you said, I would still try 43-75(2) just to be sure and compare.
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barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
3/31/2024 12:11am Hi guys, I’m back with your jetting.I don't have the needle so I imagine it should still work better with it.. actually the bike works well even with the wrong needle (currently 44-75 2nd clip). I order and install the right needle and go. I found a needle chart (in French because I'm French 🤪)
barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
3/17/2024 2:34pm Im going to test, I have all of them and I also ride motul 800 39:1 and avgas100ll. i test this in few days and go back to you. thanks guys.
barret1997achille Added a reply to 125/150/250/300 KTM/HUS/GG jetting thread
3/17/2024 12:45am Hi, do you have new jetting information for 300sx. I also have a 300 but I have difficulty adjusting it correctly, I drive it like a 125, in deep sand. 450 32,5 44-75 2nd position A/S:2
barret1997achille Added a reply to 2018 250sx overhaul
11/18/2020 11:47am hi, sorry in advance for my poor english I’m French, i have a 250 tc 2018, i only drive in sand, at sea level (enduropale du touquet on youtube) what are your carb tuning suggestions for these conditions. thanks in advance