Yellow cdi bypass wire

[Vlabruzzo]

what exactly does it do and mean if when unplugged I have no issue starting my motor? With it plugged in it has no spark. 1991 225 carbed txrp

[99yam40]

I do not really know, but I think it bypasses some of the controls to spark incase something fails so you can get back to land

[Vlabruzzo]

I do not really know, but I think it bypasses some of the controls to spark incase something fails so you can get back to land

I think it will give me a better clue to my issue. Maybe I'll call yamaha tomorrow. They have be pretty.helpful in the past.

[99yam40]

someone will have to test everything to see what is missing
voltages into and out of the CDI should help point in a direction

[ausnoelm]

Is the safety lanyard wire yellow? Just to be clear, there is no CDI "bypass"

[boscoe99]

Connecting the yellow wire puts the motor into the fixed ignition timing mode. Used in the event there is a CDI malfunction that prevents the motor from starting, the RPM from being stable, or the motor fails to reach an operating RPM.

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[99yam40]

I thought I read that some where in the past for some motors

[Vlabruzzo]

Yeah. I understand that part. Im just curious,if I had a bad stator or pulsar I'd assume the yellow wire would have no effect in anything?

[boscoe99]

Have you tested the coils and other components for proper output voltage?

The yellow wire needing to be disconnected indicates there is a problem. Which was probably already known. The problem that is. It is up to someone to trouble shoot the system to find the source of the problem.

[Vlabruzzo]

I'm trying to trouble shoot it. I have limited info. I've been an automotive mechanic for the past 25 years. I am capable of figuring things out given the proper resources. Also, im not familiar with 2 strokes so I'm learning as I go.

[99yam40]

I too was a auto tech way back in the day, before I turned into a industrial electrician and then and I & E tech
so you will have the proper info to read in a Yamaha service manual for your motor,
or look on the web for CDI Electronics Troubleshooting on Yamaha for the specs

[Vlabruzzo]

I have the yamaha manual. It's lacking info. I just googled the cdi info and will check voltage tomorrow. only problem is my engine isn't listed except for the appendix

[boscoe99]

LIT-18616-00-61???

Send me your email via PM and I will send you data indicating the voltages. The attachments here are no longer working well for me.

[Vlabruzzo]

LIT-18616-00-61???

Send me your email via PM and I will send you data indicating the voltages. The attachments here are no longer working well for me.

Thats the one. Ill pm you my email. Thanks