Question about Yamaha YZ 250 Motorcycles

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How to hook up a 84 cdi box up to a 89 yz 250

1989 yz 250

Posted by Anonymous on

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Hi, Anonymous 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.
YAMAHA YZ250 LC Owner Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals
How To Make Yamaha YZ 250 Two Stroke Even Better
Yamaha YZ 250 02

Posted on Jul 26, 2016

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Posted on Jan 02, 2017

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SOURCE: MY YZ250 WONT REV PAST 3/8 THROTTLE. I NEED HELP!!

It does sound like an ignition timing problem, but could also be a breathing issue, air flow in or exhaust flow out could be restricted i.e.:dirty air filter, excessive carbon build up in exhaust pipe from burning too much oil or rich fuel mixture.
possibly and more likely some junk got into your fuel system and partially plugged up the main jet in the carb, -or has the needle on the slide been moved? The little circlip at the top of the needle, if it has one.
1.Replace the spark plug, check gap, check spark, it should be bright blue and fat.
2. check the fuel filter, if no filter check the carb for dirt.



Posted on Jan 20, 2009

  • 1 Answer

SOURCE: cdi box

there a mounting spot between the radiators its a perfect fit for the slot on the box and its a tight fit

Posted on Apr 02, 2009

  • 3567 Answers

SOURCE: how to set a power valve on a yz 250 1989 and how

Google " service manuals yamaha "
or go to www.repairmanuals.com
or try your local library. Often guys will donate manuals to the library.

You might find a free pdf service manual on this site, they have a ton of them.
http://www.carlsalter.com/motorcycle-manuals.asp

Please rate this solution. Thanks!

Posted on Apr 05, 2009

  • 29 Answers

SOURCE: will 1989 yamaha 350 warrior cdi box match up with

HELLO; No, the 87- 89 are only for those years, yamaha changed the wireing looms three or four times I can't remmember, youll have to get one for your year of quad for it to work right. Check on line for a used one or new at better than dealer price. GOOD LUCK.....GREASY.

Posted on Oct 02, 2009

Benimur
  • 6966 Answers

SOURCE: i need a wiring diagram for a honda cr 250 so i

Hi and welcome to FixYa,

On your posted need for the wiring diagram of a Honda CR250, would this help?

Good luck and thank you for asking FixYa.

Posted on Nov 15, 2009

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1 Answer

I have a yz250 1999. and the cdi box is bad i want to buy a cdi from yz 250 2003 and i dont know is working on my bike?


Its not supposed to work on your bike "BUT" I have a 2006 raptor 660 CDI on my 02 warrior 350 and it works better than stock and is supposedly "non-compatible" with the warrior the only thing different with your bike and the 03 is the TPS

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check power to coils before you give up on cdi

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Hi, Cathyndan 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 $8 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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I have a 2001 yz426f that I think it needs a new CDI ignition box. My friend has the same bike except for his is a 2000. Will his CDI box work on mine? I know they have separate part numbers but I have...


Hi, Crazypaintba after careful deliberation 4 out 5 Yamaha Gods give this one a thumbs up, but just to be on the safe side you should give your local dealer's parts/service department a call to confirm. 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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I need help i have a 1990 yz 125 i have fire from the scatter plate to the cdi box i also have fire from cdi box what i need to know is how to hook it up to the kill switch and the coil


you run the positive lead from the cdi to the positive lead on the coil.... then somewhere between the negative lead on the coil and the frame/engine ground you splice in the kill switch.........what that does is breaks the ground when you push the kill switch which then kills the spark to the motor

Aug 19, 2009 | Yamaha YZ 125 Motorcycles

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I have a 2002 yz 250, it wont start, i just found out that one of the green cables on the CDI box was torn. what can i do to fix this ?


if the wire is long enough then solder it.but if the wire is torn out of the cdi box then you need to buy a new one.

Aug 06, 2009 | 2003 Yamaha YZ 250

4 Answers

Will 1989 yamaha 350 warrior cdi box match up with a 2004 cdi box


it is diffrent way diff 1990 throw 1996 is same but after that they changed

Jul 28, 2009 | 2008 Yamaha YZF-R15

1 Answer

Does not run


if you do not have fire only three things control this stator coil cdi more than likley you have a bad cdi u can get the cdi off ebay cheapest

Jul 05, 2009 | Yamaha YZ 250 Motorcycles

1 Answer

Cdi box


it is mounted under the left side of the tank dont put it near the radiator your cdi unit will not last long coz of it's high temp.

Apr 02, 2009 | 2003 Yamaha YZ 250

3 Answers

Cdi box


it should mount under the seat

Feb 17, 2009 | 2003 Yamaha YZ 125

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