ninjette.org - View Single Post - 2012 Ninja 250R Bogging/Sputtering On Take Off Running Rich

Bob KellyIII · June 14th, 2023, 11:26 AM

Definately sounds like the same problem I was having.... god only knows what changed but it won't run worth a darn..... I had to put 3 shims under the jet needles..... try 2 first and see if the bog goes away I did but I still had a slight bog around 4~5 grand at half throttle....
added the last shim ( a tiny washer) and the problem went away completely!
it is also very important to adjust the airscrews under the carbs you have to get them to fastest idle or it WILL effect the running of the engine up to half throttle ! these are picky carbs !!!!! close isn't good enough with these !

.....
Bob......

June 14th, 2023, 11:26 AM	#42
Bob KellyIII Retired motorcycle Mc. Name: Robert Location: Weed, California. Join Date: Jul 2021 Motorcycle(s): 2012 Kawasaki Ninja 250R, 2021 CSC TT250, 1977 Triumph Bonneville 750cc,2001 Honda XR650L. Posts: A lot.	Definately sounds like the same problem I was having.... god only knows what changed but it won't run worth a darn..... I had to put 3 shims under the jet needles..... try 2 first and see if the bog goes away I did but I still had a slight bog around 4~5 grand at half throttle.... added the last shim ( a tiny washer) and the problem went away completely! it is also very important to adjust the airscrews under the carbs you have to get them to fastest idle or it WILL effect the running of the engine up to half throttle ! these are picky carbs !!!!! close isn't good enough with these ! ..... Bob...... __________________________________________________ Its too late when you've gone too far !