Air fuel mix thumb screw

02337 · January 19th, 2013, 11:29 PM

Did a few google searches and didn't come up with much, basically I've misplaced my springs and orings for my air fuel mix screws. I was just about to drop 15-20 dollars when I was reading over the new cycle gear mag and came across these.
http://www.cyclegear.com/eng/product...rew/web1008828

It says it fits keihin fcr carbs just curious as if these would fit our carbs?
Could save me some coin and will be easy to adjust!!!

rojoracing53 · January 19th, 2013, 11:41 PM

Quote:

Originally Posted by 02337

Did a few google searches and didn't come up with much, basically I've misplaced my springs and orings for my air fuel mix screws. I was just about to drop 15-20 dollars when I was reading over the new cycle gear mag and came across these.
http://www.cyclegear.com/eng/product...rew/web1008828

It says it fits keihin fcr carbs just curious as if these would fit our carbs?
Could save me some coin and will be easy to adjust!!!

I know the taper at the tip of the needle is important be maybe something like this would be easier to adjust without removing anything. http://www.kawieriders.com/forum/kaw...ure-screw.html

02337 · January 19th, 2013, 11:44 PM

I think I'm gonna swing by cycle gear tomorrow Nd pick them up and compare... If not, ill just the springs and orings if they fit. If not, oh well

justin_ninja · January 20th, 2013, 01:03 AM

after messing with the carbs like crazy those would of been nice to have... u might want to see if u can take one of ur needles with u and compare at the store, and see if they are the same size and look..

02337 · January 20th, 2013, 11:31 AM

Fcr thumb screws are smaller threads than cvk, no go ;(. Still for 10 bucks I can use the spring/oring.

choneofakind · January 20th, 2013, 02:15 PM

Bummer those didn't work out for you.

Helpful suggestion for an adjusting tool:
I disassembled a bicycle mulit-tool (about $5 or less) and I kept the flat head tool. It's a metal shaft that's about 2.5" long with a loop in the end. The loop at the end does 2 things 1) it gives me a reference point for how far I've turned the mix screws, and 2) it gives me a little leverage to turn the screws. It's definitely the perfect tool for that (without paying for a right angle screw driver)

justin_ninja · January 20th, 2013, 02:32 PM

i went to harbor freight and got a right angled screw driver with flex , u can remove the flex part and attach a extension to it with a screwdriver end and it works great. it takes tips so u can change it to any u want.

headshrink · November 21st, 2013, 09:37 PM

I know this thread is a little dated now, but I did indeed recently find thumb mix screws for our 250r. Factory Pro now sells them. -->Factory Pro fuel thumb-screws
Shipping sucks, so if you haven't already bought a jet-kit, now would be a good time.

What does not show in the picture on Factory Pro's site is that part of the end is flattened to serve as a reference mark. This way you you know exactly how far you have turned the screw. It's big enough that you can do it all by feel.

I installed mine today and couldn't be happier.

January 19th, 2013, 11:29 PM	#1
02337 ninjette.org member Name: George Location: Delaware Join Date: Aug 2012 Motorcycle(s): 03 ninja 250 Posts: 201	Air fuel mix thumb screw Did a few google searches and didn't come up with much, basically I've misplaced my springs and orings for my air fuel mix screws. I was just about to drop 15-20 dollars when I was reading over the new cycle gear mag and came across these. http://www.cyclegear.com/eng/product...rew/web1008828 It says it fits keihin fcr carbs just curious as if these would fit our carbs? Could save me some coin and will be easy to adjust!!!

November 21st, 2013, 09:37 PM	#8
headshrink ninjette.org certified postwhore Name: Bob Location: CA Join Date: Dec 2008 Motorcycle(s): '08 Ninja 250r, '14 CBR500r Posts: A lot.	I know this thread is a little dated now, but I did indeed recently find thumb mix screws for our 250r. Factory Pro now sells them. -->Factory Pro fuel thumb-screws Shipping sucks, so if you haven't already bought a jet-kit, now would be a good time. What does not show in the picture on Factory Pro's site is that part of the end is flattened to serve as a reference mark. This way you you know exactly how far you have turned the screw. It's big enough that you can do it all by feel. I installed mine today and couldn't be happier. __________________________________________________ Honda Interceptor VFR800 DLX (2014, 8th gen) Honda CBR500r (2014) - FOR SALE Kawi Ninja 250r (2008) - Restored and passed-down within family, only to be abandoned

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January 19th, 2013, 11:44 PM	#3
02337 ninjette.org member Name: George Location: Delaware Join Date: Aug 2012 Motorcycle(s): 03 ninja 250 Posts: 201	I think I'm gonna swing by cycle gear tomorrow Nd pick them up and compare... If not, ill just the springs and orings if they fit. If not, oh well

January 20th, 2013, 01:03 AM	#4
justin_ninja ninjette.org member Name: justin Location: beaverton or Join Date: Jan 2013 Motorcycle(s): 90 ninja 250 Posts: 10	after messing with the carbs like crazy those would of been nice to have... u might want to see if u can take one of ur needles with u and compare at the store, and see if they are the same size and look..

January 20th, 2013, 11:31 AM	#5
02337 ninjette.org member Name: George Location: Delaware Join Date: Aug 2012 Motorcycle(s): 03 ninja 250 Posts: 201	Fcr thumb screws are smaller threads than cvk, no go ;(. Still for 10 bucks I can use the spring/oring.

January 20th, 2013, 02:15 PM	#6
choneofakind ninjette.org certified postwhore Name: . Location: . Join Date: Feb 2011 Motorcycle(s): . Posts: Too much. MOTM - Feb '13, Feb '14	Bummer those didn't work out for you. Helpful suggestion for an adjusting tool: I disassembled a bicycle mulit-tool (about $5 or less) and I kept the flat head tool. It's a metal shaft that's about 2.5" long with a loop in the end. The loop at the end does 2 things 1) it gives me a reference point for how far I've turned the mix screws, and 2) it gives me a little leverage to turn the screws. It's definitely the perfect tool for that (without paying for a right angle screw driver)

January 20th, 2013, 02:32 PM	#7
justin_ninja ninjette.org member Name: justin Location: beaverton or Join Date: Jan 2013 Motorcycle(s): 90 ninja 250 Posts: 10	i went to harbor freight and got a right angled screw driver with flex , u can remove the flex part and attach a extension to it with a screwdriver end and it works great. it takes tips so u can change it to any u want.