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How to set idle up on my carb the screw has been played with and dont know where it meant to be

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To reset the carb to factory setting, do the following > Turn the air screw and the throttle screw inward until they LIGHTLY seat. now open each of them up one and one half turns. This is the factory setting. Note the light seating of the screws. Too tight and you can easily deform a screw by creating a ring indention at the point where the screw meets the jet. This can affect the smooth running of the engine and requires a new screw to fix it. Please rate my answer. Thanks!
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Posted on Nov 18, 2009

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Hi I am rebuilding a 1979 suzuki enduro I took the carb apart and cleaned it ..It idles great but when i get on the gas it Bogs down and quits any info or parts catalog or manual would be great...I dont...


check the air box and filter for obstructions.

The mixture screw should be fully screwed in gently and then undone about 1 1/4 to 1 1/2 turns.
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Hi, I own a Pulsar 150 DTSi (2007). I want to know the correct/most effective technique for setting the idling speed and carburetor volume control screw setting. I have already read many articles on the...


First and formost make sure air filter is clean.Then start bike and warm up engine.with engine warm adjust idle screw(the big screw with spring around it)Turn clockwise to increase and counterclock wise to decrease.with bike idling properly the low speed air adjustment screw (small screw located just above fuel bowl on side of carb)Adjust in small increments 1/16 turns at a time till bike has smooth throttle responce.This screw contols air flow during idle and up to 1/4 throttle.From 1/4 throttle and up the needle setting on plunger inside of carb takes care of 1/4 and up.You usally dont have to mess with needle unless you do upgrades to get more power out of bike.But over time the low speed settings can change due to wear on idle needle and air needle.So thats why you have to make adjustments.If bike still dosent respond or idle correctly I would purchase carb rebuild kit and your problem will be solved.

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1 Answer

Idle speed problems


Hi Walker14,

You have to sync thecarbs and also you will have to reset the air-fuel mixture screws.
One of the carburators should be factory adjusted, I dont wn a kawasaki but I own a YAMAHA SECA XJ750R and thro it I am sharing my experince.
Once you have located the factory preadjusted carburator you can thn set the others to its specs. I use the feeler gauge to do for my bikes carburators and it works fine.
With regards to the mixture screw..... get the all in tightened but slowly aas to not damage the pin end of it!.
Start the bike and get it to normal running temp and thn set the screws 2 and half turns out...you may need to set your idling speed before you begin this setting of the mixture screws, you prolly will hveto go higher on revs or vicecersa ....onc eyou are at the mixture screws and adjusting them , you will surely note the differenc ein sound of he bike an its idling ..
Hope this will help.


Knight.

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