2003 Yamaha YZ 250 Logo

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Anonymous Posted on May 08, 2014

Cdi diagram 1978 yz 250

5 Related Answers

Anonymous

  • 101 Answers
  • Posted on Aug 06, 2009

SOURCE: i have a 2002 yz 250, it wont start, i just found

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.

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Anonymous

  • 1167 Answers
  • Posted on Sep 28, 2009

SOURCE: 98 YZ 250 started sputtering at higher rpms?

just change the plug buddy use a br8eg and get back to me if still not starting

farroutideas

Dale Farr

  • 78 Answers
  • Posted on Jan 15, 2011

SOURCE: would a cdi box cause

Not likely. would cause it to not run. you if this is a 2 stroke you may need to adjust your oil mixture. manual says 30;1 But 40:1 is much better.

Anonymous

  • 1940 Answers
  • Posted on Mar 05, 2011

SOURCE: Need a ignition wiring diagram for a 1999 yamaha

http://www.4shared.com/document/sMjNLzGr/2003_Yamaha_YZ250_FR_Wiring_Di.html

The link above is the wiring diagram from the 2003 Yamaha YZ250, but I am not sure if this will match the 1999 Yamaha YZ250.

Here is a link to the 1999 Yamaha YZ250 Service Manual, with the wiring diagrams: http://www.powersportresource.com/details.php?mID=237

It is less than $10.00, making it a great deal if the diagram I provided you doesn't match up.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Anonymous

  • 1 Answer
  • Posted on Oct 13, 2011

SOURCE: the yz 250 1986 has the same engine as the tri z

im not that good with carborators so any help will be great .

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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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02 yz 250 not reving up

Check the compression. It should have at least 100 psi,..if not,then its time to rebuild the top end..IE piston,rings,bore cylinder. If compression checks out,i would start with the power valve. Two stroke dirtbikes power valves are notorius for gumming up and sticking,causing them to not rev correctly.
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Would a cdi box cause a 2003 yz 250 to miss fire

Not likely. would cause it to not run. you if this is a 2 stroke you may need to adjust your oil mixture. manual says 30;1 But 40:1 is much better.
0helpful
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Need cdi diagram

Google it or look for repair or service manual if you are doing it yourselves.
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98 YZ 250 started sputtering at higher rpms?

just change the plug buddy use a br8eg and get back to me if still not starting
0helpful
1answer

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.
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