How To Jet Your 2-Stroke Sherco | Keihin Carburetor's

Modern internal combustion engines have a number of different high tech fuel injection systems to blend the perfect air fuel mixture every time no matter the conditions. However in years past this essential process was often tuned in a more rudimentary method using a carburetor.

Many current models of motorcycles come straight from the factory equipped with a carburetor and the controversy and polarity between carburetor Versus Fuel injection is almost as heated as 2-strokes Versus 4-strokes.

Either way we're here to help you learn a few simple tips that can help you tune your 2-stroke carburetor.

In this video we break down step by step exactly how to exchange the jetting on your Sherco 2-stroke, however these steps will be applicable to ANY motorcycle equipped with a Keihin carburetor.

If you're interested in learning more about engine service or upgrading your current suspension on your motorcycle visit The MotoXperts in Spanish Fork, UT.
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[brettpalmer]

Didn't really detail anything about actually tuning the carb. Didn't offer any tweaks. Sure you showed the jets/ needle, which may be helpful to someone whom never opened a carb.

[bigkx]

Thank yall for actually listing the symptoms clearly, I've been searching for hours trying to find a list as clear as that.

[carlatamanczyk]

One issue I find with most of the 2 strokes I tune is the float level too high. Once I reset the float it makes quite a difference.
I recommend making sure the float is set correctly before changing jetting.

[myronstambaugh]

Tough to put out a short concise vid on such a deep and nuanced topic. I was frustrated you mentioned the slide as one of the four ways to tune the carb but then did not mention it further. BUT, I love your content and watch it often. Please keep it up!

[panic-revv]

Should go more into detail on needle taper an position. I think this is a very overlooked detail.

[MrBoomtheroom]

what if its runs rich but take a long time to come down to normal idle after a throttle burst?

[jw]

Ok l have a 2019 sherco 125
l ride hard enduro l have changed a few ergos, gear and jetting.
l currently run 40 pilot 165 main my slide is stock 5.5 l have a N1EH on 3rd clip riding from 200mtr to 500 metres average elevation l will try 2nd clip and may even change needle to NECH witch seems to work well with 250/300 all running 36 mm carbs it does run a lot better but still room for improvement jetting and gearing changes have made the map switch far more effective

[OldDirtGuy]

My pet complaint is how seldom a two stroke comes with the right throttle slide. My two YZs have and 8 and a 9 (stock is 7). My '17 KTM came with a 4 and now has a 5.75 from a CR125.

[NinjaBKT]

How to fix number pilot & main jet to use in the carburator? maybe jetting start from bla bla bla....😅

[mauriciosanchezvargas]

Hello, your video is good. I have a question. I have a beta xtrainer 300 2023. I recently put a jetting main 162 pilot 38 needle position number 4
That would help me to have a good response from the bike in the mid and low ranges.

[_.R.F.X.L._]

I have a 5hp outboard 2 stroke boat engine.. and i change the main jet from 0.82 to 0.99 dimension and i want to change the needle jet atomisor with one with more holes to mixt beter extra fuel .. do you tink i will get little more power from it? I also bore the intake wall inside.. from 17mm to 19 mm now.

[arunprassath]

As i open the throttle it takes a while to get the full performance

[Rieju-Sherco]

Do you guys like the J.D. needles? I own a 2022 Sherco SE 300 it's close but not 100% yet.

[zwagoner]

Did you guys follow the Sherco jetting chart or did you go leaner?

[Dimis.kostopoulos]

ktm 300 EXC 2008 τι σέτ χρειάζεται το καρμπιλατέρ απο ζιγκλέρ και βελόνα... Υψόμετρο ξεκινά απο 800m και φτάνει μέχρι 2400m

[nickbetros]

So if my bike is pinging when I let off of wot It would help to go up with my needle position correct?

[juniorizq]

How much will it cost to have someone rejet mines i have vforce3, fmf fatty pipe and vhm mx head

[pdotpedro]

What if it runs good mid throttle then when you get high rpm it gets really weak and dies out doesn’t really get to the power band

[xeq]

i have a 2000 rm 125 and i cant figure the jetting out. it barely idles and it kinda smokes alot out the exhaust and i see alot of unburnt oil coming out too. my carb is clean i just cant figure out what sizes to use if anyone knows what to do pls reply

[paulbunyan]

Said you were gonna show how to access the carb and then literally didn't shot how to access it at all. 😔