Question about 2005 Suzuki DR-Z 125

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Carb on dirtbike

Not sure of the settings ot the ''throttle stop screw''. I have a suzuki 125 dirtbike. I believe it is a DR. MY bike kicks over and starts for 3 seconds then stops. i cleaned the carb.

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  • xx212to757xx Mar 25, 2009

    yes and yes. I can get it to start but doesnt run like it should. I either have to keep giving it gas or if I get it to idle. When I give it gas it will shut off.

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  • 1,392 Answers

Petcock on and gas flowing through it? Is it vacuum actuated, or just on/off/res?

Posted on Mar 11, 2009

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My son wanted to ride in the 12 degree weather-2003 Suzuki 2003 drz 125. He went to twist the throttle and heard cracking sounds and now the throttle does not return to the original position. Could he...


Yes it is possible to make it work,he has to dis assemble carb slide anyway,so while it is apart he can try it,should work though,doesnt hurt to give it a try.

Feb 10, 2011 | 2003 Suzuki DR-Z 125 L

3 Answers

I have a 2002 suzuki drz 125L dirtbike and im having a hard time starting it. And once im able to start it when ever i give it gas it shuts off. The air filter is clean and so is the carb. Any one have...


The carb on a DRZ 125 or KLX 125 comes pre-set from the factory with a very lean tuning. At first it may run well but once you get some time on it with a little build up and some dirt the lean setting gets even worse. To correct this you need to thoroughly clean the carb , specifically the fuel screw. Remove the carb from the intake and airbox rubbers and take off the slide cap. Drain the carb from all fuel. The fuel screw is in a recessed tube located on the bottom of the carb on the front side towards the cylinder. It may ahve a brass plug covering the screw. This is done at the factory to prevent tampering for emissions purposes. The plug can be removed by taking a very small drill bit 1/8" or so and very carefully drilling a hole in it. Put a small sheet metal screw in the hole and pull with pliers and it should come out. Make a note of the position of the screw and slowly turn it clockwise in to see what the setting is. Do not apply heavy pressure when you feel it getting tight stop. It is a soft brass screw with a fine point an is easy to damage. Typically the factory settings range from 1 1/2 to 2 turns out. This is way too lean for the bike to idle and run well or even start without the choke. back the screw out and remove the spring and O ring. Using carb cleaner with the hose attached insert it into the hole you just removed the crew from and spray it out. You should have a good stream of spray into the center bore of the carb. Re-insert the O ring and then the spring and fuel screw. turn it in until you feel it making contact and then note the position and back it out 3 1/2 turns. Put the carb back on and it should be able to start and run without the choke. Some bikes will still need a bit more tuning. The older carbs had a slide needle that had 3 to 5 positions on the needle that could be adjusted with the movable clip. Since this does not have that option you could go to a Yamaha dealer and buy the needle from a TTR 125 and install it as it is the same carb. This will cost you around $15.00. Or you could go to a hardware store and buy some 3/0 stainless washers and remove the needle and put 2 or 3 under it to shim the needle up just like the clip on an adjustable needle. You may spend $1.00 with this option. The bike should run better than new.

Apr 23, 2010 | 2005 Suzuki DR-Z 125 L

2 Answers

How can i tune it myself.. the throttle is a lil


You probably cannot ... It takes special tools and expertise to properly balance a motorcycle carb. If you think it is the carb, take it to the dealer for a tuneup.

Apr 11, 2010 | 2003 Suzuki DR-Z 125 L

1 Answer

Dirt bike problem


there should be a sight glass on one side of the engine low near the frame

Mar 27, 2010 | 2005 Suzuki DR-Z 125 L

1 Answer

I want my dirtbike to be manual clutch


Sorry to tell you.It would be cheaper to buy another bike.It would cost a lot of money to go from auto clutch to manual clutch.Hope this helps

Jan 21, 2010 | 2005 Suzuki DR-Z 125

2 Answers

I recently bought a suzuki rm 125 and it wont run with out me giving it revs y is this . i cant leave it to tick over because wen i let off the throttle the bike dies????


the idle buddy is too low,on the carb is a screw the ide screw turn it in 1/4 of a turn with the bike running untill it idles the way you want it too and it will idle the pic below ill help ya buddy 34c510c.jpg

Sep 22, 2009 | 2003 Suzuki RM 125

3 Answers

How do i set my suzuki rm 125 carb to the right setting and does any 1 know what the setting should be please thanks graham


Turn the air screw and throttle screw all the way inward. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. The carb is now set back to factory specs assuming no one has changed out the main jet or played with the float level..

Please rate this solution. Thanks!

Jul 18, 2009 | 2003 Suzuki RM 125

1 Answer

Where is the air/fuel mixture scrue?


i'm not too familiar with dirtbikes but my experience with street bikes it has been on the underside of the carbs and if stock it is typically covered by a brass plug. this plug is just there to satisfy the epa you need to drill it out but be careful the screw is directly underneath the plug so as soon as you break thru pull back then use a screw to extract the plug. hope this is the answer you are looking for.

Jun 29, 2009 | 2003 Suzuki RM 125

1 Answer

Stator Resistance


Try adujsting the rev screw on the side of the carb, dont turn it any more than 1/8 at a time, turn it clockwise to increase revs, and anti-clockwise to decrease them

Please rate my help, thanks

Apr 21, 2009 | 2005 Suzuki DR-Z 125

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