Go Back > 1986 - 2007 Ninja 250R > 1986 - 2007 Ninja 250R Tech Talk

Thread Tools
Old July 21st, 2019, 03:39 PM   #1
Aodhfin newbie
Name: Scott
Location: Cincinnati, OH
Join Date: Jul 2019

Motorcycle(s): None yet

Posts: 7
Idle air mixture initial settings?

Can anyone tell me what the service manual says to set the idle air screws at on an '04? One manual that I looked at said that both sides are different and around 1 3/4 ish, while the adjustment page says start at 2 1/2? I know 2 1/2 is a generic setting to start with, was just wondering if there was something more official? I'm not sure if the service manual that I was looking at was the correct one for this '04.
Aodhfin is offline   Reply With Quote

Old July 21st, 2019, 04:49 PM   #2
ducatiman certified postwhore
ducatiman's Avatar
Name: Gordon
Location: new york
Join Date: Sep 2009

Motorcycle(s): '95 DUCATI 900SS/SP '98 HONDA VFR800 '07 DUCATI SS800 '19 HONDA CBR650R

Posts: A lot.
MOTM - Nov '18, Mar '17
I'd disregard presets....either bench or manometer synch first....I'd suggest a 2 1/2 start point, get the bike running, up to normal temp....a good 10-15 minute ride. Get home...while *hot and still running* set each side for the "sweet spot"....highest RPM and best throttle response.

...but its a hot, dangerous job, gloves, a towel draped over engine to avoid burnt hands....whatever it takes to protect yourself.
A small, short, drill bit type fitting or small screwdriver (modded to fit as necessary) in your fingertips to turn the respective pilot screw inward (that cylinder should stumble) then back out till RPM raises to reveal best running and response to throttle. BOTH sides...all the while the engine hot and running.

In a shop setting, a large cooling fan pointed to front of bike (radiator)will aid you somewhat.

Be careful, its a hot, nasty job but great response should reward you, provided you nail it.
Custom Carb Service
ducatiman is offline   Reply With Quote

1 out of 1 members found this post helpful.

Similar Threads
Thread Thread Starter Forum Replies Last Post
'04 Idle Air Mixture Screw O-Rings Aodhfin 1986 - 2007 Ninja 250R Tech Talk 2 July 3rd, 2019 04:06 PM
idle adjustment or air mixture dodgerdad 1986 - 2007 Ninja 250R Tech Talk 5 October 21st, 2018 08:23 AM
Question about idle mixture screw and low idle flux daverdfw 2008 - 2012 Ninja 250R Tech Talk 3 June 2nd, 2016 10:36 PM
Idle Mixture ?'s nebraskan 2008 - 2012 Ninja 250R Tech Talk 31 April 13th, 2011 08:41 PM
Stock mixture screw settings ferret09 2008 - 2012 Ninja 250R Tech Talk 1 April 1st, 2011 11:43 AM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Motorcycle Safety Foundation

All times are GMT -7. The time now is 05:38 AM.

remote server monitor
Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Except where otherwise noted, all site contents are Copyright 2019, All rights reserved.