Question about 1989 kawasaki ZXR 400

1 Answer

My idol screw needs 2 b ajusted 2 factory settings

Iv messed wiv my idol screw as it was tickin over 2 fast i turnt the idol down but the bike cut out and now it wont start up ???wats the idol factory settings 4 my screw ??? doi turn it to my left tillit stops then turn it 2 my right 1 and a half times ??????

Posted by on

  • hall ie Apr 24, 2010

    wat do i do now then ????? do i turn this black thump switch al the way 2 the right till it cnt go no more?? then do i turn it 2 and a half turns 2 the left ???? iv had it stared since but soon as a pull thorttle cuts out this 2 much air gettin in2 the carbs ????

  • hall ie Apr 24, 2010




1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 440 Answers

No you are confusing the idle screw (a thumb-screw) with the air/mixture screws, these are turned inwards (clockwise) until they lightly seat & then back out the specified amount
You should have the bike tuned by a professional who should include synchronising the carbs, this will let the engine run more smoothly, idle at lower revs ,increase speed & all-round performance speed

Ride safe
Please mark this as very helpful (if it has been!!)

Posted on Apr 24, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Is it hard to change the primary gasket on my sportster

No, just drain the primary. You'll have to take anything like shifters, foot pegs, and other stuff that might be in the way off the bike. Then, go underneath the primary cover and loosen the locknut of the primary chain tensioner and turn the screw downwards to remove the tension for the tensioner. Now, take the derby cover off and remove the spring and the locknut. Take the bolts out of the cover and then turn the clutch ajuster inwards as you pull the cover off. The cover will come off.

Then to install the cover, hold it up to the clutch adjuster and turnt the screw counterclock wise as you put the cover back on. Put all the bolts in the cover and tighten them. Then back at the clutch adjuster, turn the screw outwards until it stops. Then turn it back inwards 1/4 turn, put the locknut and the spring in and replace the derby cover. Remove the top plug of the primary cover. Stick you finger in and feel the up and down play of the primary chain. Adjust the bolt at the bottom of the primary upwards to reduce the play to about 1/2" to 5/8" and lock the lock nut. Refill the primary with one quart of primary-transmision lube. Replace anything else you have taken off the bike.

good Luck

Sep 27, 2010 | 2003 Harley Davidson XLH Sportster 883...

1 Answer

Hi my bike wasnt sparking so i changed the stator and now bike runs but it dies or revs up on its own no matter what i do i tryed changing the e/choke for a new one but if i put that in it it wont start...

Have you tried ajusting the mix. screw on the side of the carb there should be one screw for idle (tick over), and one for mix. (the amount of air and fuel the engine needs), but make sure that the screw hasn't come out, if it is still in there screw it in but not to tight just until it stops then unscrew it 3 turns and try it, if it still runs fast unscrew it 0.25 of a turn. if it starts on tick over and its wont come down on the idle screw you need to turn it 0.25 of a turn until it slows down. if it doesn't start take the carb off and take the bowl of the bottom and clean any dirt out, there should be a tube in the centre with either a brass or plastic main jet make sure the hole is clear. When you put it back together make sure every thing is clean.

Sep 10, 2010 | RTO 50cc Moped Scooter

1 Answer

Bike wont idol below 2 grand

Hi and welcome to FixYa,

Almost always, the described idling problem would be a carb issue. The carbs set has to be pulled down, fully dis-assembled, all non-rubber parts soaked in carb cleaner and cleaning be done specially on the jets and pin holes.

In some instances high idle could be caused by a vacuum leak in any of the rubber coupling between the carbs and the intake manifolds.

Good luck and thank you for asking FixYa.

Apr 09, 2010 | 1992 Yamaha FZR 600

1 Answer

Idoling at 500 rpm how do i up the idol

at the manifold there is a set screw it will help you ajust the idle also check the linkage plate might be bent

Jan 28, 2010 | 1996 Mitsubishi Galant

1 Answer

When i slow down or stop my engine cuts out and is difficult to restart why uh125

try adjusting the idol control screw normally on the side of the carbs .you will need a manual to locate it though as im no familair with the bike. hope this helps

Nov 09, 2009 | 2003 Suzuki UH 125 Burgman

2 Answers

In need of correct pilot screw setting for my zxr750 h2.. many thanks Andy

Rule of thumb for most bikes.
2 - 21/2 turns out from seated (not tight) position. Bike should run. Tune for max idle speed then turn down 1/4 to 1/2 turn. Should be ok.

Jun 15, 2009 | 1990 kawasaki ZXR 750

2 Answers

Fuel Air mixture screw

2 and a half make sure the bike's running when u do it the revs should sit between 1 and 3/ 2 2half

May 22, 2009 | 2000 Yamaha DT 125 R

1 Answer

Screw setting for a 49cc baja dirt bike its a orange yelloe bike for the carbarator boys were trying to ajust the air screw themselfs

GENTLY turn the idle screw and the air screw all the way in untill the LIGHTLY seat. Now turn each screw out one and one-half
( 1 and 1/2 ) full turns. This is the stock setting.

Please rater this answer. Thanks snow8006!

Apr 05, 2009 | 2006 Bajaj Bajaj Avenger

1 Answer

When I start my jaguar, it idols at a fast speed but then as it warms up it will idol fast then slow, fast and slow and keep doing so

if it is a v12, and at idle when warm if it goes up and down then you need to rebalance the throttles, they are off balance causing the idle to raise and drop.
set the butteryflys behind the air cleaners to 2 thousands of an inch using a fella guage and make sure the linkage arms from the pedestal in the middle of the engine are set the same (one is not longer than the other)

Jul 25, 2008 | 1986 Jaguar XJSC

Not finding what you are looking for?
1989 kawasaki ZXR 400 Logo

307 people viewed this question

Ask a Question

Usually answered in minutes!

Top kawasaki Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4904 Answers


Level 3 Expert

79865 Answers


Level 2 Expert

342 Answers

Are you a kawasaki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides