early 90's yamaha 15 won't start.

[fun w son]

it started fine when i picked it up about 1 year ago.
the plugs are wet and it is not a fuel problem. i don't think it is getting any fire, what and how do i check the electrical????

 

[99yam40]

Re: early 90's yamaha 15 won't start.

read the posts in frequently asked questions/ here is one of them.
http://forums.iboats.com/showthread.php?t=158071

 

[fun w son]

Re: early 90's yamaha 15 won't start.

thanks for the words! i'll give it a try tonight.

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

check for spark
if no spark unplug the white wire from CDI box

if you get spark, you need to check the safety lanyard

 

[fun w son]

Re: early 90's yamaha 15 won't start.

thanks i'll try tonight and let you know

 

[sdsaw]

Re: early 90's yamaha 15 won't start.

If no spark, also check the kill button.
I have a late eighties 9.9 with a red rubber kill button on the tiller handle and it collapsed enough to ground out the ignition resulting in no spark

 

[fun w son]

Re: early 90's yamaha 15 won't start.

is there a way to bypass the kill botton!!

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

yep unplug it

 

[fun w son]

Re: early 90's yamaha 15 won't start.

i unplugged the stop switch, and still no blue spark?????

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

you need a dva and meter to test things

 

[fun w son]

Re: early 90's yamaha 15 won't start.

when it comes to electrical.... i think i need to bring this one in!!

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

not that hard

read cdi electronics page

 

[fun w son]

Re: early 90's yamaha 15 won't start.

I read though the Manual and it seams pretty easy. I need to Buy a Fluke Meter and learn to use that before i can go any further. I'll keep you informed. Thanks!!!

 

[99yam40]

Re: early 90's yamaha 15 won't start.

Here is some more to read about trouble shooting CDI electronics and test equipment

http://outboardparts.com/troubleshooting/cditroubleshooting.htm

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

make sure you tested with the white wire unplugged from cdi

 

[fun w son]

Re: early 90's yamaha 15 won't start.

i unplugged both wires on the stop botton and pulled the rope with the sparkplug out of the head but plugged in to the coil and got nothing. then i connected the two wires together and pulled again with nothing. i also tried with the stop botton hooked up, and unpluged the white wire from the black ignition box on the back of the motor and still nothing.

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

ok

trigger or stator or maybe cdi or even a the coil

check the coil grounds

 

[fun w son]

Re: early 90's yamaha 15 won't start.

i checked them and all was good, one thing a noticed the black box on the top of the head (not the coil) is not tight on one side.it has a little play. i tried to tighten the bolt but it won't tighted any more, now the side with the black wires under the bolt was tight. there was no corrosion on any on the wires that i can see.

 

[JUSTINTIME]

Re: early 90's yamaha 15 won't start.

ok DVA and meter time

 

[fun w son]

Re: early 90's yamaha 15 won't start.

DVA???? what's that