xyzm
Scoot Member
Posts: 26 
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Post by xyzm on Apr 7, 2015 19:51:35 GMT -5
Hi, I am new to this forum. I plan to learn plenty it.
I have a two stroke scooter (2008 Benelli Andretti)
It used to work, then it didn't, so I took it all apart, down to the piston, out of curiosity.
Now the electric start won't work, and I still can't get it to start.
As of now I am a little confused with how the electronics function.
so first question.
Does your headlight turn on with just DC power from the battery?
I assumed my electric start wasn't working because of the battery, because it used to work! So I bought a brand new battery and it still won't work.
My headlights only turn on, for a split second when I attempt to kick start. This is a good thing right!
So 2nd question.
What does it mean when your kick start gives your headlight power?
Means the magnetic part and AC electricity from the kick is working right??
I'm trying to diagnose the problem. As of now I am assuming its the electric start.
Also third question.
In the internal part of the electric start switch there is two female locations to put the male cable, one is red one is black. Whats the difference. I know this controls the kill switch on the electric but whyy?
Thanks!
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xyzm
Scoot Member
Posts: 26
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Post by xyzm on Apr 7, 2015 20:01:20 GMT -5
oh and I do get a spark.
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Post by runningbuck on Apr 25, 2015 9:17:39 GMT -5
ok if you get spark only two other things needed to run that is fuel and compression as to why the electric starter is not working make sure the rear brake light switch is working (ie pull the brake lever and make sure the tail light gets brighter)if it's working then check the starter button to make sure it's working if it is the only thing left is the starter solenoid take a screw driver and briefly make contact between the two big nuts and see if it turns over just places to start
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xyzm
Scoot Member
Posts: 26
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Post by xyzm on Apr 25, 2015 16:03:03 GMT -5
Hey Hey heY!
contact between the solenoid turns the starter motor! Thanks for the advice.
I get contact on the terminals of the starter button, but I think I may have switched the cables between the kill switch and starter. But with either combination I do, it still won't trigger the starter motor.
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Post by Fox on Apr 25, 2015 19:46:09 GMT -5
Not sure how your scooter is wired but on many scooters it's possible to plug the auto enricher into the starter relay plug and vice-versa.
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Post by niz76 on Apr 25, 2015 20:30:37 GMT -5
The little tiny switches that are activated when you pull the brake lever play into the system also...
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Post by runningbuck on Apr 25, 2015 21:09:49 GMT -5
does the brake light come on when you pull the brake lever first thing I would check next thing is to make sure I am getting power at the starter switch one could just put a wire from one connecter to the other and see if any thing happens with the brake lever pulled if the switch on the brake lever is working and the starter switch jumped and you still get nothing the I would be checking the wiring unless it's the key switch that is bad but unlikely either they work or don't if the brake light comes on then most likely it key switch is working you could put a volt meter at the solenoid and try the switch and see if power is getting to it if it is then it's the solenoid if no power to the two small wires then its a switch some where it's just one step at a time progress
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xyzm
Scoot Member
Posts: 26
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Post by xyzm on Apr 25, 2015 21:56:45 GMT -5
Ah Unfortunately It didn't come with tail lights. I have 3 cables dangling at the end, two for the turn signals that are identical to the front, but the other is a triangle female connector. I could trigger and measure connectivity at the end of the cable(the cable that leaves my rear brake)
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Post by runningbuck on Apr 26, 2015 0:03:37 GMT -5
yea that would work or just check to see if power is on at the plug when lever is pulled typical wiring should be green = ground Brown = running lights and the third is brake orange = left and blue= right but not all bikes are wired correctly they may use what ever wire they have around but the standard is a good bases
As an old saying I was taught many years ago "green is ground as the world goes round except in Europe and France where brown is ground (as they have no grass)"
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Post by fe53series3 on Apr 28, 2015 17:17:13 GMT -5
It used to work, then it didn't, so I took it all apart, down to the piston, out of curiosity. Now the electric start won't work, and I still can't get it to start. Does your headlight turn on with just DC power from the battery? My headlights only turn on, for a split second when I attempt to kick start. This is a good thing right! What does it mean when your kick start gives your headlight power? In the internal part of the electric start switch there is two female locations to put the male cable, one is red one is black. Whats the difference. I know this controls the kill switch on the electric but why? First off; and I know this sounds like I'm being a twat, but....... you really need to see this as an opportunity to get to grips with a wiring diagram  It's a skill for life, that you're gonna need time, after time, after time. The good news is that the wiring for a scoot is very simple...... and all the cables are accessible..... so it's perfect. If you can upload a PDf/JPG of the wiring diagram, or a link to it....... then it will be soooooo much easier to see how you have mis-wired it. Anyway.... apart from that. Your bike will likely have two live circuits.We'll only know if you upload the wiring diagram. One is 'direct feed from the jenny'...... the other is fed from the battery (which is also fed from the jenny, but on a separate circuit). If you print 3 or 4 copies to A4, you can highlight the two circuits to help you visualise at a glance where your wiring is going. Primary Generator CircuitThis feeds the ignition system, possibly tail light, possibly brake light, and possibly dip, or a small front light. Secondary Battery CircuitThis feeds the starter motor and everything else. Your ProblemIt looks like you have misconnected the two circuits. As you kick the motor, the generator turns, creating electricity to power the headlight. The headlight sucks all the power being created, so there's nothing left to create a spark. The starter motor It turns over, when you bridge the poles, because it then gets a direct feed from the battery. Normally the two poles are bridged via a switched relay....... but evidently the relay is not getting any power from the battery. It actually sounds like you just got one or two wires wrongly connected, mixing the two circuits. No big deal...... just upload the wiring diagram, and we''ll then see which wires you've got wrong.  |
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xyzm
Scoot Member
Posts: 26
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Post by xyzm on May 1, 2015 16:07:46 GMT -5
Thanks fe53series3, noobs gotta learn. I have a wiring diagram but its from a 'Tank manual' I found. Not sure if it applies to my two stroke engine, type:qmb139. I did find that I did not have my rear brakes connected, so now I can control the electric start with the switch. Now I'm not sure If I am having compression issues or my carb is clogged. When I disconnect the fuel line from the petcock valve to carb and I crank, no fuel comes out the fuel line..buttt when I disconnect the vacuum line and suck on it, I get fuel out the fuel line.  Also what does 'direct feed from the jenny' really mean? |
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xyzm
Scoot Member
Posts: 26
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Post by xyzm on May 1, 2015 16:12:09 GMT -5
This has been a great learning experience btw...buying a half busted scooter at a yard sale for 40 bucks to learn how all the parts work.
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Post by runningbuck on May 1, 2015 21:18:47 GMT -5
"Also what does 'direct feed from the jenny' really mean?" power is feed for the magneto or generator (jenny) gota love cheep scoots
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Post by fe53series3 on May 3, 2015 8:32:55 GMT -5
"Also what does 'direct feed from the jenny' really mean?" power is feed for the magneto or generator (jenny) gota love cheep scoots What it means is that the primary circuit is powered directly from generator. You don't even need the battery connected. Check out this section of a typical wiring diagram. Note: 1 is the Alternator generating AC voltage. Follow the top wire G...... it goes to the battery and beyond to other lighting circuits etc. but NOT the ignition circuit shown as 2 & 3. You could disconnect G and the bike would still run, but with limited lighting. Now check out the top wire coming from 2. That wire goes directly to the stop switch on the key...... and then onwards to certain safety circuits, such as tail light etc. Hence the two circuit design.  |
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