numbers on cdi boxes, what they mean. - Yamaha ATV Forum
LinkBack Thread Tools Display Modes
post #1 of 2 Old 09-26-2010, 11:35 AM Thread Starter
Senior Member
Join Date: Apr 2010
Posts: 161
numbers on cdi boxes, what they mean.

i have 2 cdis that have a 'z' in the second place of the last four digits. niether of these work on my system. the cdi that did work has 8908. it is a '99, that has had the stator/rotor converted. my harness has the two 'two wire' clips and the r/r three wire. the stator i installed had three 'three wire' clips. as such i eliminated the second p/u coil. the rotor has the short sweeper as opposed to the long one. all of the numbers are the same except the last four:
3GD 40
F8T34271 9Z24
' ' 7Z10
' ' 8908

i have noticed that the brains on some vehicles are changeable by merely driving. vtr250 would run one way with me, another with my brother. after him being on a minute or so, with him on it, it would be a dog. i quit letting him ride my bike. when i replace the cam chain i will reinstall the proper rotor. if i seem to have lost power, i will swap back. i imagine someone will say that this should not be working this way. but it did, and it worked fairly well. i say fairly, because this is the only warrior i have ridden. another issue is that i have had to clean the terminals and grounds 3 times in 6 months. one of those times, the positive terminal was broken. thanks in advance.
mike75925 is offline  
Sponsored Links
post #2 of 2 Old 09-29-2010, 04:15 PM
Crowd Control
diggerzmound's Avatar
Join Date: Oct 2002
Location: Nebraska
Posts: 8,407
Send a message via AIM to diggerzmound Send a message via Yahoo to diggerzmound
I doubt you will find any information on this. It is one of those mysteries that no one has ever come forth with their findings.

01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster
06' Rhino 450
94' Banshee T-5's, Vforce, ported, Cool Head, 2-1
06' Wolverine 450 - Stock!
06' LTZ 440
94' Vmax4 750, 96' 600 MountainMax
06' Vmax 1200
diggerzmound is offline  

Quick Reply

Register Now

In order to be able to post messages on the Yamaha ATV Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rev Boxes Geartaker Yamaha YFZ450/450R (2004-Present) 3 01-28-2007 10:28 PM
so about these cdi boxes quadfreakyfm350 Yamaha YFM350 Raptor/Warrior ('87-Present) 3 05-25-2005 04:13 AM
REV BOXES FAT&LOUDSHEE Yamaha YFZ450/450R (2004-Present) 2 02-24-2004 06:27 PM
air boxes keno Yamaha YFM660R Raptor (2001-2005) 11 03-13-2003 12:18 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome