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Carburetor adjustment 1998 Suzuki RMX 250

1998 Suzuki rmx 250 carburetor settings @

Posted by Anonymous on

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  • Suzuki Master
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Hi, Anonymous 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.
8. 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.
9. 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 for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://dirtrider.net/forums3/threads/1995-rmx250-keihin-carb-settings.80699
https://www.youtube.com/watch?v=QaQA4a_qKjE
Suzuki RM250 Owner Service Manual
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki

Posted on Apr 26, 2019

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6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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tombones

  • 3567 Answers

SOURCE: RMX 250 model

Your bike is a 2000 model year. The 10th digit is the year designation.

Top rating on this answer please. Thanks!

Posted on May 29, 2009

jamie

  • 1810 Answers

SOURCE: Suzuki RMX 250

call the dealer they can tell you all the pertanant info and will also carry the manule

Posted on Aug 03, 2009

Anonymous

  • 149 Answers

SOURCE: 1998 rmx 250 lacking power

sounds like you lost compression, maybe it could e fixed with a valve readjustment or bad rings.

Posted on Aug 31, 2009

Anonymous

  • 1 Answer

SOURCE: CARB PROBLEM

I have Suzuki gsxr 1100 from 1989 . How do i fix the gas and air on the carburetors

Posted on Dec 13, 2009

Ozaus Gener

  • 31 Answers

SOURCE: suzuki rmx 250 1999 wont hold idel

Your air jetting is defective or maybe need to clean.It's not a big problem..Let me know if ok.

Posted on May 26, 2010

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Hi, Ivan for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Suzuki, despair not, for a mere zero $ 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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call the dealer they can tell you all the pertanant info and will also carry the manule

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Your bike is a 2000 model year. The 10th digit is the year designation.

Top rating on this answer please. Thanks!

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