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Post by rune75 on Apr 6, 2013 15:39:37 GMT -5
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Post by rune75 on Mar 30, 2013 11:04:53 GMT -5
I've seen some drawings showing how the lubrication system works on these small
4 strokes. What I don't quite get is how the crank bearings get oiled, especially the
left one. Are they just splashed whit oil from the connecting rod and cylinder ?
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Post by rune75 on Mar 29, 2013 6:57:10 GMT -5
JR, I'm pretty sure you have solved the mystery. This scooter usually starts immediately when I press the startbutton. At one point I disconnected the black wire (DC) from the CDI (I only pulled the black wire not the fuse) and the engine needed a couple of turns before it started. It's also a bit harder to kickstart when I pull the fuse. I thought I was just imagining these things, but now it makes
sense. The advanced timing function seems to
effect the starting ability also.
Thanks for taking time answering my question. All of you.
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Post by rune75 on Mar 28, 2013 10:57:11 GMT -5
Very interesting, I wonder if the black is a battery backup in case the stator fails? Other than the extra green are the pin configuration/wire colors the same as alleyoop's pic above? Try leaving the black one plugged in and disconnect the black w/red and see if it still runs. I'm going to have a dc cdi bike open today. I'll have to compare wire colors. Wire colors are the same. Pin configuration are the same regarding the 4 pins to the right (on the picture). The to pins to the left on the picture are not the same. On my CDI the upper left pin is connected to DC, and the lower left pin is connected to the pickup. If I disconnect the black/red (AC) the scooter stops. So no backup function. |
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Post by rune75 on Mar 28, 2013 6:41:08 GMT -5
Go to page 190 in the service manual, and you will see how it's hooked up.
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Post by rune75 on Mar 28, 2013 4:00:08 GMT -5
I just looked at the diagram that is the second ground wire going to the batteries ground. Alleyoop Nope. Only one wire is connected to ground and that is the green one, marked G. The wire next to it, marked B (black) goes to the main/ignition switch and provides DC power. |
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Post by rune75 on Mar 27, 2013 16:25:12 GMT -5
If you google 'Sym Mio servicemanual' you will find and be able to download a pdf of the servicemanual.
On the last pages you will find a wiring diagram where you can see how the CDI is wired.
All 6 wires come from different places. Killswitch and AC are separate.
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Post by rune75 on Mar 27, 2013 16:01:55 GMT -5
It runs just fine without the battery connected.
My CDI has 6 wires and they are in random order:
Ground
Signal from pickup
Killwire/shutoff wire
Coil feed
AC power
DC power
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Post by rune75 on Mar 27, 2013 13:17:47 GMT -5
How did you test the CDI for DC current being fed? Alleyoop The DC current is being fed from the ignition switch. I can see it on the wiring diagram I found online. I also measured it in/on the plug when I unplugged the CDI. |
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Post by rune75 on Mar 27, 2013 4:33:42 GMT -5
I have a Sym Mio 50 whit a 6 pin CDI. It has both DC and AC connected. If I pull the
fuse it of course loses the DC current, but it doesent make any difference. The scooter runs just fine without it. From what I've read these CDI's run on DC
or AC, not both.
Anybody know the function of the DC connection ?
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Post by rune75 on Mar 19, 2013 6:44:01 GMT -5
Here's a really good video. You may not understand the language, but the video speaks for it self.
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