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How do you reinstall a 2004 yfz 450 carb. I need to know what lines connect to what and which lines are not connected togther.

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I have a 2009 YZF250, and your should be the same.
The big line is from the fuel tank. All of the other lines are vents, and one overflow line comes from the bottom of the carburator, as all of these do not connect to anything.

Posted on Sep 06, 2010

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I have a 2005 yfz 450 and I dont know hot to do an oil change any help my yfz has the motor to put oil and it has a square box on top that has oil too


Hi, Marcos for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. 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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http://www.atvriders.com/vbb/showthread.php?452577-How-To-Change-Your-Oil-On-Your-YFZ
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http://thequadconnection.com/Manuals/YFZ450%20SERVICE%20MANAUAL.pdf
OEM parts for Yamaha
http://www.yamaha-motor.com/assets/service/manuals/2004/lit-11626-17-11_784.pdf

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How to clean carb 08 yfz 450


Hi, Anonymous for more information about your question 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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2007 2013 Yamaha YZ450F Service Repair Workshop Manual Download Manuals...
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http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Feb 13, 2014 | 2004 Yamaha YZ 450 F

1 Answer

I have a 2004 Yamaha YFZ 450 the bike will start and drive but as soon as it warms up when you push the throttle it starts to cut out... What is the problem?


There is not really enough info in your post to narrow down the problem. Hesitation during acceleration can either be fuel related or ignition timing related. Once up to speed, will it maintain that speed smoothly?

If you have a timing light, check the timing at idle. If it is OK, then it is probably fuel related.

Assuming you have not messed with the ignition timing, if it idles, but won't accelerate, it is probably starved for fuel. 1.Check/change the fuel filter- easy and cheap
2. pull the fuel line off the carb, and make sure fuel flows from the tank freely.
3. If there is good fuel flow to the carbs, pull the carbs and clean them.

Sep 30, 2013 | Yamaha 06 Yfz450 Yfz 450 Carburetor Carb...

1 Answer

I have a 2004 yfz 450 that wont idle, not sure why anymore


Hi, Anonymous and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
mean YFZ won idle
http://www.r1-forum.com/forums/4-mechanical-help/110266-help-yfz-450-will-not-idle-correctly.html
YAMAHA YZ450F Owner Service Manual
OEM parts for Yamaha
http://www.yamaha-motor.com/assets/service/manuals/2004/lit-11626-17-11_784.pdf

Aug 08, 2013 | 2004 Yamaha YZ 450 F

2 Answers

My 2004 yfz 450 wont start i changed my plug changed my stator put fresh gas in it was riding over the weekend then stopped for a break and went to start up wouldn't start


When you have difficulties starting do you get fuel to the cylinder and sparks on the plugs when you pull out the hi tension wire from the engine?

Sep 30, 2011 | 2004 Yamaha YZ 450 F

1 Answer

Well my yfz 450 sat in my shed over the winter so i drain the tank and clean the carb. Then i went to start it and it wouldnt fire up. I took it apart and check it for spark from the coil and didnt have...


the ignition cant fail from sitting, perhaps the kill switch has corrroded, always put a spark plug in and ground it to the head when checking for spark , also check with a new spark plug

May 15, 2010 | 2004 Yamaha YZ 450 F

1 Answer

Timing on 06 yamaha yfz 450


Here is the SERVICE MANUAL for your bike.

http://pdfdatabase.com/download_file_i.php?file=14074911&desc=Yamaha+YZ450F+Service+Manual+.pdf

Dec 25, 2009 | 2004 Yamaha YZ 450 F

1 Answer

How do i remove and clean the carburetor on a 2005 Yamaha YFZ 450? i could not find my model .but it is a 2005 YFZ 450v


The easiest way is to remove the seat and then remove the entire rear sub-frame - the airbox is attached to the subframe, so it will go with the subframe. Loosen the rear clamp on the intake boot. The sub-frame is only held on by three bolts so it's a piece of cake to remove.

Once the subframe is off, the carb will be wide open and easy to remove from there.

Nov 25, 2009 | 2004 Yamaha YZ 450 F

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