Question about 2002 Honda CR 250 R

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Idle and air srew adjustments 2002 cr 250 - 2002 Honda CR 250 R

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Hi, M420blackbur it should be noted that the "AIR FUEL" mixture screw adjustment "ONLY" manages your idle and has no effect on any other circuit also any intake leaks must be repaired before the A/F adjustment procedure can be performed otherwise you will never obtain a proper idle and you will waste a lot of time chasing the impossible. The A/F mixture screw's purpose is to fine tune the fuel charge entering the combustion chamber. The following applies to both 2 and 4 stroke engines:
1. The mixture screw may be sealed at the factory with a Welch Plug please review the following video for removal.
https://www.youtube.com/watch?v=wAXcksgvDkM
2. The mixture screw manages a range of 3 complete 360-degree counterclockwise turns from the bottom/closed position.
3. The mixture screw should have a spring and o-ring for tension and sealing integrity.
4. Turn the mixture screw clockwise until it gently bottoms out, this makes the fuel charge very lean and the engine should not idle if it does then the pilot/idle jet is too big and needs to be replaced with the next size smaller.
5. Turn the mixture screw 1 and 1/2 turns counterclockwise to establish a baseline for starting the engine.
6. To fine-tune the idle circuit, adjust the mixture screw 1/4 turn in or out to achieve maximum idle RPM, wait 15 seconds between each adjustment for the idle to settle.
7. Never go past 3 full turns out this will make the fuel charge rich, foul plugs, and produce black smoke out of the exhaust, if the engine RPM keeps increasing past 3 turns the pilot/idle jet is too small and needs to be replaced with the next size larger.
7. After achieving maximum idle back out the mixture screw another 1/8 of a turn then adjust the throttle cable idle stop screw to 950-1050 RPM.
8. This procedure works great on 99% of all engines, for the 1% that demand a more robust throttle response on aftermarket monster fuel delivery systems additional tweaking outside the box may be necessary.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
2004 CR250 idle adjustment and air screw
Life On 2 Wheels
CR250 2002 2003 pdf
http://www.partsfish.com/page/oem-parts-for-honda
Honda CR250R Owner Manual Competition Handbook

Posted on Jun 26, 2017

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rzman
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SOURCE: looking for idle adjustment on

the idle adjustment is the choke knob turn it left or right to increase or decrease idle

Posted on Mar 20, 2011

  • 68 Answers

SOURCE: Honda CR 250

It will technically fit, but it will not mount right. Chaz Moto DC

Posted on Feb 25, 2010

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1 Answer

What to do to get my cr to idle ????


The carb needs to be cleaned and cleaned correctly to make it idle. Also if it has any lose or broken vacuum lines, they need to be fixed or repaired because they will also cause idle issues.

Jul 15, 2015 | 2002 Honda CR 250 R

1 Answer

2004 Honda CR 125 R very high idle


Hi, Anonymous and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector.
10. Multiple carburetors not in sync.
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1 Answer

2002 Honda CR 250 R idle screw location


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Apr 05, 2014 | 2002 Honda CR 250 R

1 Answer

2004 Honda CR 125 R carburetor high idle


Hi, Anonymous and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector.
10. Multiple carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Honda CR 125R 2002 Sevice Manual
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Honda Elsinore CR125M Owner Manual

Jan 14, 2014 | 2004 Honda CR 125 R

1 Answer

2002 Honda CR 125 R idle adjustment


Hi, Anonymous you need to make sure you have no intake leaks by spraying some Brake Kleen, Contact Cleaner, Starting Fluid etc. around the intake manifold and seals, if the RPM's go up or down significantly then you have a leak that needs to be fixed before you can continue with the carburetor adjustment.
The engine should be at operating temperature with the enrichener off to set the idle between 950-1050 rpm. Turn the idle skrew clockwise to increase the idle speed and counterclockwise to decrease the idle speed. If you have access to your air fuel mixture skrew you may turn it as well, if not there is a video below on how to gain access, make sure you start with clean or new spark plugs. Gently turn the air fuel mixture skrew clockwise until it starts to bottom out "STOP" do not over tighten as it will damage the taper on the end, now back the skrew out 1-1/2 full turns to establish a starting point start the engine and check the idle rpm's and turn the idle skrew accordingly for 950-1050 rpm if necessary, turn the air fuel mixture skrew 1/4 turn at a time and let the engine settle for about 10 seconds, turn the skrew clockwise for a leaner mixture and counterclockwise for a richer mixture, you are seeking the highest rpm your air fuel mixture skrew can acquire without going past 3 full turns from bottom then resetting the idle skrew back down to 950-1050 rpm If you can not detect any rpm change and can not stall the engine by turning the air-fuel mixture skrew all the way in then your pilot/low-speed jet is too big and needs to be replaced with the next size smaller. Final adjustment should be made with a clean air filter mounted to the carburetor.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Mar 29, 2013 | 2002 Honda CR 125 R

1 Answer

2002 Honda CR 250 R high idle


Hi, Doctah and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector.
10. Multiple carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
03 CR250 fast idle
high idle dont know what causing it
CR250 2002 2003 pdf
http://www.partsfish.com/page/oem-parts-for-honda
http://owners.honda.com/assets/ownerlink/model/own_man/powersports/2007/2007_cr250r.pdf

Aug 27, 2012 | 2002 Honda CR 250 R

1 Answer

Looking for idle adjustment on 2003 cr 250


the idle adjustment is the choke knob turn it left or right to increase or decrease idle

Mar 19, 2011 | Honda CR 250 R Motorcycles

1 Answer

My honda cr 250 idle's high when takin over. and before it runs out of petrol it rev's up on it's own.


The air/fuel mixture is Lean as opposed to rich. Adjust the air/fuel mixture screw clockwise in quarter turns until the idle normalizes. This screw can be found inbetween the carb and air filter. It should be a brass screw with a flat head (not cross or philips).
When you're almost out of fuel cab will go lean and therefore idle up.

Mar 01, 2011 | 2002 Honda CR 250 R

1 Answer

How do u know that your air screw is at the right setting?


Air screw adjustment is simply what runs best. All the things you listed do mean something when adjusting the bike, but only to someone with the equipment to properly test all functions of the bike while running. Just make sure your mix ratio is right, and if you have to adjust the air screw for the first time, always run it all of the way in first to find out what the factory set it at. Make sure you write that # down so if you do end up with a problem with your adjustments, you can go back to the original setting and try it again.

Jul 04, 2010 | 2002 Honda CR 250 R

1 Answer

Idles at full throttle


Be sure the throttle cable is routed correctly and is not being stretched. When disconnected from the carb, does the inner throttle cable operate freely? Lubricate it. Also check that the cable connections at throttle and carb are seated properly. Does the slide move up and down freely? Remove the air filter and twist the throttle while looking inside the throat of the carb. LIGHTLY seat the throttle screw and the air screw then open each of them one and one half turns outward.

Aug 02, 2009 | 2002 Honda CR 250 R

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