Question about 2007 ATK 450 Mx

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Slow deceleration in neutral

Any of you atk 450 owners experience a slow return to idle when you chop throttle (in neutral)? Just sitting there revving the engine does this

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Pull carb and make sure jets are CLEAN the slightest debris can cause hanging rpms I removed and cleaned carb twice before I actually got it right on suzuki

Posted on Aug 28, 2013

  • gotta clean it Aug 28, 2013


    Hanging rpms? Pull carb and do a thorough clean be certain jets are free of debris It took me three times but mine finally was right after cleaning. Dealer told me when I was going to purchase new carb

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It revs fine but then backs down to idle slowly. Cdsracer mentioned that his cousin's in SoCal also does this.... Is it due to the different dirtbike clutch basket size? Any idears? Something simple maybe?Mine both drop right back down. Sometimes a slight hover at 2200 RPM or so then settles at 2000 RPM (usually only before motor has fully warmed up) ,,,

Posted on Nov 10, 2008

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1 Answer

I have a 2004 wr 450, when I got it out this year and started it I noticed that it pops through the exaust a lot. What can cause this?


Hi, Anonymous popping or backfiring on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec. Coughing is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp buildup of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals. Spitting is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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May 13, 2014 | 2004 Yamaha WR 450 F

1 Answer

Yamaha V Star 1100 Custom carb slow to return to idle


Hi, Anonymous and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
10. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.starbikeforums.com/forums/49-v-star/1194-rpm-slow-return-idle.html
star 1100 high idle untill complete stop
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/2000/LIT-11626-13-36_96.pdf

May 07, 2013 | Yamaha V Star 1100 Custom Motorcycles

1 Answer

V Star 1100 Classic will not return to idle at a stop without shifting into neutral


Hi, Ron and the usual suspects are:
1. Throttle cables improperly adjusted or pinched.
2. Idle adjusting screw needs to be backed off.
3. Intake system air leak.
4. Fast idle choke ramp is not releasing.
5. Broken throttle return spring.
6. Damaged diaphragm or slide.
7. Faulty MAP, TPS, ATS, O2, VSS sensors or wiring/connector
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.starbikeforums.com/forums/49-v-star/1194-rpm-slow-return-idle.html
Star 650 Idle issues
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarShopManual99-07.pdf
OEM parts for Yamaha
http://www.sloneservices.com/SilverBack/Other-Stuff/V-StarOwner%20Manual.pdf

Apr 10, 2013 | 2006 Yamaha V Star 1100 Classic

1 Answer

I have 1998 r1 and it's high reving on idle


Hi, Steve and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.r1-forum.com/forums/101-98-99-r1-mechanical-help/291640-slow-rpm-return-idle.html
YZF600R Forums View topic High Idle RPMs
1998 1999 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

May 26, 2012 | 1998 Yamaha YZF-R1

1 Answer

2006 ATK 450 Mx wiring schmatic


Hi, Doug I am sorry you can't find the first and best tool you ever bought for your ATK but despair not for a mere $0 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
http://www.atkusa.com/parts/parts

Sep 14, 2011 | 2006 ATK 450 Mx

1 Answer

HOW DO I TIGHTEN MY DRIVE CHAIN ON MY ATK 450 MX


Hi Chansen685, I am sorry you can't find the first and best tool you ever bought for your ATK but despair not for a mere $0 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
http://www.atkusa.com/parts/parts

Aug 12, 2011 | 2005 ATK 450 Mx

1 Answer

2003 yamaha yzf600r carbureted, When I twist the throttle (fast or slow) it sputters for a second then revs up and just sits at 4000 rpms, even if i just poke the throttle at idle it will rise up to 4...


Hi, Striker_1011 and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Yamaha YZF600 YZF600R 1994 2007 Service Repair Manual PDF Download Manuals...
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Yamaha YZF600RP Owner Manual

May 02, 2011 | 2003 Yamaha YZF 600 R thunder cat

2 Answers

I have an 07 yz450f i need to know how to adjust the carb. i am not sure what screws do what and where the are even located on the carb. the bike has less than 15 hours and is all stock. it pops on...


the screws on the carb are for idle speed , and air mixture, the air mixture it underneath,but it really only affects mixture at idle speed.
you may need to try raising the slide needle, or go up a size in the main jet, do one at a time and keep notes about the changes and results

Apr 16, 2010 | 2004 Yamaha YZ 450 F

1 Answer

Bike isnt starting and if it starts turns off soon after, also electric starter isnt turning the bike on (brand new bike)


Well sounds like you need to experiment with the idle screw, or maybe your forgetting that your not using a car give it a little gas while its not in gear. Every so often your throttle will need to be pumped to keep enough gas being injected into the bike so it will keep firing.

Nov 28, 2009 | 2003 ATK 250

1 Answer

My atk 450mx stalls often


clutch cable needs adjusting its still engaging whilst when you stop by sounds get back to me if its wrong i have other optons

Oct 12, 2009 | 2005 ATK 450 Mx

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