200 ec 2006 jetting(no expert at all)

[wilkoryte]

hello everybody

I own a clean 200 ec 2006 (approx 700 miles)

I live in france(europe ) and my gas is stock
here are the settings
slow jet : 52
main jet : 185
needle : NBHW 3#
slide : 5
screw : 2,25 t
spark plug : black

where I live is at sea level

my gas is not very effective at low revs (may be it is normal !?)

I ordered 175 and 180 main jet, 48 slow jet; do you think it could be correct values to start

 

[widebear]

I can't comment on the 200 , as I have no experiance but I can tell you that your jetting would be very rich ,even for my 300cc and I have not heard of the needle you are running. I as well am curios to see what other 200 guys are running and what the story on the needle is? You might want to i.m. speedymaniac to see what he's running

 

[wilkoryte]

thank you for your answer

I tried my new jets
slow jet : 48 the air screw is now at 1,5 turn, it seems a correct value(?)
main jet : 180 my spark plug is brown/black I will try the 175

I visited the keihin website but could not find any correspondence between
NBHW and keihin values !?

 

[widebear]

Its good that you are checking your plug condition, Just to give you an idea yesterday I replaced the 170 main in my 300 with a 165, elevation 1000 metres @35. celcius

 

[JoshP]

First things first never change more than one thing at a time when fine tuning the jetting because you will not be able to tell what has done what. It sounds as though your issue is in the low end of the throttle which would be your pilot and needle. Now I would get that cleaned up first and then tackle your main. Your 45 pilot is a good place to start but your needle will probably be too rich to feel the difference. If you notice it is a little cleaner but still bogs try moving the clip up on the needle to lean it out a little. You will not find any information on the Keihken site due to GASGAS and others using their own jet descriptions. Another option would be to base line it with one of those fancy dancy jetting kits. LTR needles are very nice although I'm not sure how well they would work on a 2006.

 

[wilkoryte]

Its good that you are checking your plug condition, Just to give you an idea yesterday I replaced the 170 main in my 300 with a 165, elevation 1000 metres @35. celcius

small jet but high temperature !!

 

[wilkoryte]

First things first never change more than one thing at a time when fine tuning the jetting because you will not be able to tell what has done what. It sounds as though your issue is in the low end of the throttle which would be your pilot and needle. Now I would get that cleaned up first and then tackle your main. Your 45 pilot is a good place to start but your needle will probably be too rich to feel the difference. If you notice it is a little cleaner but still bogs try moving the clip up on the needle to lean it out a little. You will not find any information on the Keihken site due to GASGAS and others using their own jet descriptions. Another option would be to base line it with one of those fancy dancy jetting kits. LTR needles are very nice although I'm not sure how well they would work on a 2006.

thank you for your wise advice and help, next time I will try to change the needle settings only
some LTR products are sold in my country but I am not sure about jetting kits

 

[JoshP]

Not a problem. You don't need to go LTR or with a jetting kit.
It's just really easy that way. Since this is a new bike just head to your GASGAS dealer or call the folks at www.GoFasters.com (Minn but will ship anywhere) and find out what the stock needle is for a 2006 EC200 from there you have your base line on your needle. I had a the very same issue on my bike and it turned out to be my needle, basically 1/8 to 1/4 throttle was very bogged and had no power above and right below were fine though. If she pulls go on the 1/2 throttle and WOT than your problem is most likely in the pilot and needle. I have a 250 my current setting are
Pilot:35
Needle: LTR 0 2nd clip from top ( this needle was about 2 sizes smaller than the stock)
Main: 172
Don't start at this point though because every bike is a little different so always error on the rich side of things, since it's better than blowing up your engine.

 

[GMP]

NBHW is the OEM needle on the 200. According to the specs I have your stock except for the pilot, which is listed at a #45.

 

[wilkoryte]

thanks for your answers

I will try a 45 pilot and check the air screw setting with it .
I read that correct(safe) air screw setting was between 1 and 2 turns (?)

I am not skilled enough to change(choose) my needle, I will try 2nd clip and find out the result !

for me jetting is like experimentation I just do not want to make hazardous testing

 

[JoshP]

Air screw setting should be 1 1/2 to 2 1/2 out. Start on the 1 1/2 side to 2.
I would definitely install that 45 pilot since the 52 is really rich and can not be helping things. I know this stuff seems scary and people will tell you horror stories about screwing up bikes with too lean of jetting but if you approach it with caution and fore thought then you will never do any damage to the bike.
One change at a time and until it is all completely smooth. Good Luck with it!
-Josh