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Cr80 carb What is the idle screw setting

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

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SOURCE: 1986 YF 60 4-Zinger. carb settings

The air/fuel screws won't have any effect on the top end. That would be governed by the main jet. Did you install the Boyseen Reeds? If this is a new addition it could be the problem. Another thing could be the fuel level in the carburetor bowl. When you tore down the carb it is possible the float got out of adjustment. You could drop the bowl and see if the fuel level is correct. If not, bend the tab on the float to adjust it.

Posted on Oct 03, 2009

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ckoira57
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SOURCE: wheres the idle adjustment screw on my carb.. i

There is a small knurled knob to the rear base at centre of carbies, this turns a worm screw, actuating a bar for all 4 carbs. The site below provides an exploded view and name of carby parts.

Here's a tip...if the knurled knob (designed to turn by hand) is too hard to turn, a multi facet (not hexagon facet) socket or ring spanner is far easier than pliers or grippers.

Cheers.

http://www.cmsnl.com/yamaha-fz600s-19861987_model9219/partslist/B-04.html

Posted on May 15, 2010

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SOURCE: needle adjustments for 1999 Suzuki RM80 Need carb

Lightly seat the screws then open up each of them one and one half turns. This is the factory setting.

Posted on Aug 11, 2010

johnamyx
  • 108 Answers

SOURCE: How many times do I

I am assuming you are talking about the idle of the bike, which should be 1400-1600 RPMs. If you are talking about the air fuel screw it should be 1 3/4 turns out. Make sure not to tighten it to tight as you can damage the needle. I hope this answers your question. Thank you.

Posted on Nov 02, 2010

  • 339 Answers

SOURCE: bike splutters then takes off..bacfire

i take it the carb isnt the original one? well you can still set it up for the bike take the carb of and remove the bottom and check the floats there shouldnt be petrol flowing out of the overflow pipe when the bike is running when you have done that take the top of the carb apart and remove the needle valve from the top its connected to the throttle cable blow down the jets to clean them out re assemble the carb
there is 2 screws on the side of the carb 1 is the air screw the other is the tick over turn them both in till they are tight then turn them 2 turns out
when you start the bike it might run fast at idle or backfire if it does adjust the top screw for tick over(idle) the bottom screw for running better

hope this helps


John

Posted on Feb 25, 2011

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1 Answer

My husband touched the carb settings on my sons new 2007 ttr 50. I read the manual to try and find the number of turns to return to stock settings. Can you please please help!


The carb mixture screw may add air or fuel, depending on the model. If the bike will idle it can be adjusted without knowing the factory setting. What you want is the highest idle that can be achieved using just the mixture screw, not the idle setting screw. Start the motor, then slowly turn the mixture screw in. If the idle speed increases, continue in that direction. If it slows and becomes rough, turn the screw back out until you reach the highest idle speed. That will the correct setting for the bike at your altitude.

Sep 23, 2014 | Motorcycles

1 Answer

1984 Honda CR80 will not start


Hi, Antonymace and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
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.
Cr80 Will not start
1985 cr80 not starting
Honda CR80R CR85R service manual repair 1995 2007 CR80 CR85 Download... $15
https://www.partsfish.com/page/oem-parts-for-honda
http://mybikemanuals.com/honda/honda-crf-owners-manuals

Sep 15, 2012 | Honda Motorcycles

1 Answer

Bike splutters then takes off..bacfire when starting sometimes..gets beta if you thrash it..hav narrowed it to the carb, an was after the stock settings cr80 2001


i take it the carb isnt the original one? well you can still set it up for the bike take the carb of and remove the bottom and check the floats there shouldnt be petrol flowing out of the overflow pipe when the bike is running when you have done that take the top of the carb apart and remove the needle valve from the top its connected to the throttle cable blow down the jets to clean them out re assemble the carb
there is 2 screws on the side of the carb 1 is the air screw the other is the tick over turn them both in till they are tight then turn them 2 turns out
when you start the bike it might run fast at idle or backfire if it does adjust the top screw for tick over(idle) the bottom screw for running better

hope this helps


John

Feb 25, 2011 | Honda CR 125 R Motorcycles

1 Answer

Adjust carb on 2004 fatboy


If your carb is stock, the only thing you can adjust is the idle speed. The throttle stop screw is located at the top right of the carb. Turn the screw clockwise to increase the idle speed.

To adjust the idle mixture, you'll have to drill out the anti-tamper plug on the backside of the carb. This will require the removal of the carb from the engine. Turn the carb upside down and look just to the rear of the float bowl. Do not drill too deeply to remove this plug or you'll damage the idle mixture needle and they are NOT available separately from the dealer. Drill just deep enough to go through the plug. Tap the hole for a small screw, insert the screw and use a pair of pliers to pull the plug out. Some of them are in pretty tight. Put the carb back on the engine. Start the engine and bet it ot operating temp. Adjust the idle mixture screw for the best idle and then set the idle speed at about 1000 RPM.

Good Luck
Steve

Feb 11, 2011 | 2004 Harley Davidson FLSTF - FLSTFI Fat...

2 Answers

How do i set idle for 25cc gas trimmer?


look on the carb for two screw's sticking out they should have plastic guards on them just take them off and adjust the set screw's until its right it should smoke very little when right and not run very fast!!!

Aug 18, 2010 | Craftsman 25cc Gas Line Trimmer

1 Answer

How do you set the carburetor screws on a 1984 60cc yamaha 3 wheeler? There are 2 screws on the carb one is the idle and I assume the other is the high speed setting. I've adjusted them both all the way in...


Half right, one is the idle the other is the air mixture screw, which really only affects idle mixture. The mixture screw is usually about 1.5-2 turns out from screwing it all the way in. then when the bike is idling it is adjusted by screwing it in a little until it bogs down (rich), then screwing it out a little until the engine revs up and down(lean) and finding a smooth engine speed in the middle.
To initially set the idle, look down the carb throat and screw it in until it just starts to lift the slide.
But this doesnt help the starting problem, there may be a blockage in the carb, or if you have cleaned that already, may have to check further, many of those smaller engines need the suction though the standard air cleaner to run properly

May 15, 2010 | Motorcycles

2 Answers

I have a 1986 Honda Cr80 dirt bike and it starts first kick with no choke, and it will idle and then as soon as i put it into 1st gear it will bogg out and die or sputter and it usually wont open all the...


If no choke is needed then your mixture is to rich or not enough air is getting in,first check your air filter is clean and replace if needed,the mixture screw usually is about 1-1 1/2 turns out from fully in.if this fails then your carb will need striping and cleaning.common on off road bikes.

Mar 04, 2010 | Honda CRF 100 F Motorcycles

1 Answer

How to set up a carb with 31840 rebuild kit


what exactly do you want to know? Carb. mixture settings are as follows: L-head engines

Tecumseh carbs.........mainscrew 1 3/4 turns idle screw 1 1/4 turns
Walboro carbs........... mainscrew 1 1/2 turns idle screw 1 1/4 turns

L-head and OHV heavy duty engines 1 turns for both

Dec 21, 2009 | Toro Garden

1 Answer

2001 cr80 going through lots of plugs on fresh rebuild 4hrs on it was running 32-1 for 1st 2hrs now running 40-1 not sure if i need to adjust idle or could it be the coil or cdi


buddy run the bike onh 40:1 and on the carb will be a screw the mixture screw turn this in and unscrew it 1 turn out and try this i had this problem with my kx85 which i just blew the big end on so i cant race for a while get back to me if not ok also run the br8eg plug in it b873c5a.jpg

Sep 28, 2009 | 2002 Honda CR 125 R

2 Answers

Hyosun Scooter Carb Adjustments


Very good thought process on the adjustments. The throttle screw sets the idle speed and the air screw sets the fuel mix at idle speed. The stock setting is 1.5 turns outward. 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.

From this point you adjust the idle speed then adjust the air screw for fastest idle speed at that throttle screw setting. If the idle speed becomes faster than desired after adjustment, just reset the throttle screw and then reset the air screw.

A “very helpful” rating for this answer? Thanks!

Jun 27, 2009 | 2002 Hyosung Comet 125

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