Stella 125 Automatica CVT
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Sat Apr 27, 2019 8:40 pm quote
rowdyc wrote:
GREAT JOB! I'm glad you saved it. Someone will enjoy the crap out of it.
I have reason to get rid of it soon now. Next project started: First full restoration project.. 1980 P200E
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Honda elite
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Location: California
Sun Apr 28, 2019 7:48 am quote
wow that is amazing work congratulations!
Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Fri May 03, 2019 7:27 am quote
Haven't had time to list this online yet with my garage rearrange and starting the p200 project, but I've noticed that if i leave this scooter unplugged from the tender for a couple days it won't start. Plug it into tender for 15 min and it will start fine. This battery is new and working fine. Just wondering if there is something that i can check to see if there is a drain on the battery when off, it if there are known electrical parts that go bad and cause this issue?

I had my scooters in front of garage all day yesterday and some guy stopped to ask if they were for sale and when i was showing him this bike, it wouldn't start. Wasn't actively trying to sell it but if someone wants it, ideally i need it to start every time!
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GL, PK, PE200
Joined: 24 Apr 2012
Posts: 661
Location: Deep in the heart of Texas
Fri May 03, 2019 4:37 pm quote
Sounds like your regulator is going out. That would be the first place I start.


Good luck!
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Fri May 03, 2019 5:26 pm quote
I've tested the current when idling and when revving. Everything is as it should. But you did get me looking at those circuits. I think it may be a bad cutout relay. Looking into that it seems a bad one would not function properly by preventing a fully charged battery from draining over time, also irregular starting signals which work sometimes but not others. This is a cheap part so i will try replacing that.

I also noticed today that the gas gauge only works when the battery is fully charged.
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Thu May 16, 2019 9:49 pm quote
rowdyc wrote:
Sounds like your regulator is going out. That would be the first place I start.


Good luck!
I couldn't get it to start for a few weeks and thought it was the starter switch, so I ordered that. Before it could arrive, I woke up in middle of night this week with a really dumb thought about why it wouldn't start. Went to test that dumb idea out today and that was it... kill switch was on! Hahahaha. I was overcomplicating things during the day but took a sleep induced thought to realize it was probably something I completely forgot existed on this bike, cause my other one has it disconnected. Starts up fine after charging on battery for days.

You might be right though about the regulator as despite testing with a meter when revving and idling showing good results, I see symptoms that make me wonder if it really is charging the battery when running. For example, the fuel gauge only works when the battery has been on tender for at least a night and is fully charged. First start up after overnight charged the fuel gauge goes to full as it should. Once I rev it up and take off, the gauge goes to empty. For the first 10 minutes or so of riding around city traffic with constant stops for lights, the gauge will go back to full when stopped at a red light. As soon as I take off again, drops to empty. After 10 minutes or more of riding around, the fuel gauge stays at empty. Same for battery, once I shut it down and let it sit, it won't start again without being on tender.
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Tue May 21, 2019 8:59 am quote
The 4 pin regulator for this cvt is out of stock at every place i search, so i purchased the 5 connector rms regulator for Stella 2t and Vespas with ac/dc battery system.

Just wondering if anyone has an idea what pins should match up between original 4 pin and the more common 5 pin regulator? I'll update with wiring diagram for them both tonight.
Ossessionato
73 Rally, 74 Rally, 76 ET3, 80 P200, 63 Li125, 65 Li225 Silver Special, 86 Elite 80, 2015 HD Road Glide Special, 2011 Ural Tourist
Joined: 18 Jan 2012
Posts: 3233
Location: Oceanside/ SF
Tue May 21, 2019 1:00 pm quote
Do you have a multimeter? Disconnect it from the tender and let it sit 30 minutes or so. Check DC voltage on the battery in the scooter, everything turned off. Disconnect the battery from the harness and measure again. Voltage shouldnt change more than a tenth of a volt or so. If you notice a difference something is shorting in the scoot causing that drain.

If your battery is over 3 years old it might be done. 3-5 max is all ive ever gotten out of the lead acid batteries.

As far as the regulators, please post some pics of what youre looking at/ what the new regulator looks like. Usually its an AC in, AC out, Ground, DC out. Occasionally theres an extra AC.
Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Tue May 21, 2019 1:12 pm quote
MJRally wrote:
Do you have a multimeter? Disconnect it from the tender and let it sit 30 minutes or so. Check DC voltage on the battery in the scooter, everything turned off. Disconnect the battery from the harness and measure again. Voltage shouldnt change more than a tenth of a volt or so. If you notice a difference something is shorting in the scoot causing that drain.

If your battery is over 3 years old it might be done. 3-5 max is all ive ever gotten out of the lead acid batteries.

As far as the regulators, please post some pics of what youre looking at/ what the new regulator looks like. Usually its an AC in, AC out, Ground, DC out. Occasionally theres an extra AC.
Battery is almost a year old. I have multimeter and used to test voltages when running. I will try to test this to see if there is a shortage drain. Also will post pics of regulators later this week.
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Tue May 21, 2019 6:11 pm quote
Here are photos of the correct LML regulator with 4 pins for the CVT auto... ripped from google (couldn't get to garage tonight), and photos of the 5 pin RMS regulator (in hand from SIP) for the 2 stroke stella and vespas with battery system.

Seems the 5 pin regulator for 2 strokes connects:
-black to ground
-purple to flasher/buzzer/ignition on/headlight/taillight
-orange to ignition off/fuse and cutout relay to starter motor
-grey to headlight switch middle position/speedo fuel gauge/prd relay/stop light switch/blinker switch
-yellow to the magneto blue wire

4 pin CVT regulator connects:
-blue-white magneto wire to grey connector on regulator which connects to auto choke/speedo fuel gauge and lights/high-low switch center pos/daytime running lamp/tail light
-red wire on regulator to batt positive/ignition switch
-green on regulator to green on magneto
-black on regulator to black on regulator/horn/float unit/all speedo lights/kill switch
-yellow on the back of the regulator (not sure if this is literal or paired with one of the four connectors) to ECU VAR? switch (cant read this document text.. too small resolution)
-blue-white on back of regulator to ECU ground power

file.jpg
CVT auto regulator with 4 pins.

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RMS 5 pin regulator

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Stella_Automatic_125_Wiring_Diagram_1.jpg
CVT wiring diagram 4 pin regulator connections.

Stella_Automatic_125_Wiring_Diagram_2.jpg
CVT 4 pin regulator ECU connections

stella-service-station-manual-1.jpg
2 stroke 5 pin regulator connections.

stella-service-station-manual-2.jpg
5 pin regulator ignition connections.

Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Tue May 21, 2019 6:25 pm quote
Examining these wiring diagrams might be confirming on paper (at least) to me that it is a faulty regulator.. as symptom of this scoot is a fuel gauge that shows empty on first start even on fully charged battery. Once warmed up, the fuel gauge creeps up to full as it should. then when driving it creeps back down to empty until at red light where it creeps back up to full for the first 10 minutes until battery drains a bit.

I noticed the grey wire from regulator that connects to blue-white wire on the magneto also connects to both the speedo fuel gauge and the auto choke. So I am gathering the auto choke being on when it first starts uses more energy than can provide for the fuel gauge to meet its correct resistance. This symptom goes away when the auto choke is disengaged after warmed up, bringing the fuel gauge back to correct reading. Driving the scooter then affects the fuel gauge resistance.
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Sun May 26, 2019 6:48 am quote
So i just checked this to see if there was a short leaking the battery. Nope.

I charged battery till full, unplugged charger for half an hour. Tested voltage with harness connected. 12.93 volts. Then unplugged ground from battery by removing everything from that battery terminal including the screw that mounts into the battery holding the terminal prong, this battery has removable terminals so you can mount in different directions. Then immediately checked battery across positive and negative and it was 12.92 volts with a little jitter up to 12.93 volts every few seconds.

I take this to mean the regulator is dying and needs replacement. So I'll do that and test it, and if that doesn't solve it then I'll swap out the cutoff relay and test it.
Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Mon May 27, 2019 1:14 pm quote
So the cutout relay seems to be working better than the original in that it clicks more than the original. The regulator didn't seem to help. Stumped on what is wrong with this thing cause it only starts every few days and not other days.

Wondering if it is this thing pictured... Anyone know what this is? It is strange cause the white wire connects to the pink wire that comes off the cutout switch... But the white wire isn't actually connected to anything on this capacitor? It's just crimped into the metal harness holding it.

Picture below

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Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Mon May 27, 2019 1:27 pm quote
I'm starting to wonder if maybe it is the flywheel magneto/stator or just something so stupid like carb is not set properly. Boy I hope its not the stator/magneto. I really don't want to go through all that effort of removing the engine out of this pain in the ass frame again.

But nothing makes sense as it does start sometimes.. when battery on tender for a night. Battery reads fine as 12.93 volts when sitting off tender so I don't think it is a battery issue. Especially cause this battery is not even a year old and ran fine on my 2 stroke stella for 6 months before I swapped it onto this automatic.
Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Tue May 28, 2019 6:53 pm quote
I officially hate this scooter. Wont start at all now. Tried everything I could think of. Replaced battery again. checked new ht coil resistance again... etc. etc. etc.

It might be time to throw in the towel on this thing and recoup what money I put into it. It's distracting me from the real projects I care about.. stella 2t highway upgrades and a p200e complete rebuild.
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Wed May 29, 2019 5:57 am quote
EDIT.. wrong thread posted

Last edited by swiss1939 on Wed May 29, 2019 10:30 am; edited 1 time in total
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GL, PK, PE200
Joined: 24 Apr 2012
Posts: 661
Location: Deep in the heart of Texas
Wed May 29, 2019 9:48 am quote
I think you may have gotten your topics mixed up and that last post was for your other project.

Anywho, it maybe time to call a shop that deals with those bikes all the time like Cleveland Moto. They post a lot of YouTube videos about Genuine/Chicago scooter company products. Seems like a helpful group. You may need to purchase something from them to complete the project that would give them some incentive to trouble shoot on the phone.

Good luck!
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Wed May 29, 2019 10:36 am quote
rowdyc wrote:
I think you may have gotten your topics mixed up and that last post was for your other project.

Anywho, it maybe time to call a shop that deals with those bikes all the time like Cleveland Moto. They post a lot of YouTube videos about Genuine/Chicago scooter company products. Seems like a helpful group. You may need to purchase something from them to complete the project that would give them some incentive to trouble shoot on the phone.

Good luck!
My bad.. you are correct. posting from my phone leads to many autocorrect mistakes and an occasional wrong thread posting. Moved that one to the correct thread now.

I have been emailing with Nathan from Genuine about this scoot. He has been very helpful despite no reward yet from me. I am grateful. He is suggesting to now test the ECU battery positive voltage as I might have a fried ECU.. which would be a costly replacement.
Molto Verboso
1979 P150X, 1983 P200E, 1987 T5, 1996 PX200E, 2011 Yamaha Fazer 600 S2
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Wed May 29, 2019 11:53 am quote
swiss1939 wrote:
But the white wire isn't actually connected to anything on this capacitor? It's just crimped into the metal harness holding it.
I don't know what this capacitor is for but I'm pretty sure the white wire was connected on the positive leg of the capacitor and broke. Remove the heat shrink and you'll probably see the broken leg soldered to the white wire. Get a same type capacitor from an electronics store and change it...
Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Sat Jun 01, 2019 10:48 am quote
I triple checked all 3 fuses and none were visibly broken or blown.. but on advice from Nate@Genuine Scooters, I replaced them and the damn thing started again. To summarize, I replaced the cutoff switch which was the original problem with starting, as I can hear it trying to turn over now where before it didn't. I also had a bad battery from the cutoff switch issue. When I replaced the bad battery with known working one from another bike, pos and neg got reversed accidentally cause my other stella has the wires swapped in frame. This didn't outright blow the fuses visibly, but definitely damaged them as fresh ones solved the problem for now.

I got so pissed off with this automatic taking up so much space in garage, and time away from the 2 stroke projects I have, that I couldn't think straight and was relying on visual inspection of fuses instead of just replacing them to check.

The one positive of waiting for new studs for my 2 stroke stella to install the malossi 166 kit. I could sit here and think clearly and debug this CVT starting issue to hopefully get it out of my garage! Its bad luck!
Ossessionato
73 Rally, 74 Rally, 76 ET3, 80 P200, 63 Li125, 65 Li225 Silver Special, 86 Elite 80, 2015 HD Road Glide Special, 2011 Ural Tourist
Joined: 18 Jan 2012
Posts: 3233
Location: Oceanside/ SF
Sat Jun 01, 2019 11:23 am quote
Nice job solving the starting issue. Where are the studs coming from? Iíve got extras if they take too long.
Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Sat Jun 01, 2019 11:25 am quote
MJRally wrote:
Nice job solving the starting issue. Where are the studs coming from? Iíve got extras if they take too long.
Studs coming from Scooter Mercato in Georgia. Already in transit and should be here Monday.

I appreciate the offer!
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Tue Jun 04, 2019 6:04 pm quote
Sold this scoot to someone who upgraded from a broken chinese scooter. It will get used now.
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GL, PK, PE200
Joined: 24 Apr 2012
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Location: Deep in the heart of Texas
Wed Jun 05, 2019 5:49 am quote
That's great news to hear! Did you take any final pics before selling?
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1980 P200E project, 2005 Stella Malossi 166 MKIII
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Posts: 968
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Thu Jun 06, 2019 4:16 pm quote
No, Sorry. I just wanted it gone and wasn't thinking about photos for updates!

Next time!
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1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Sun Jun 09, 2019 6:09 pm quote
rowdyc wrote:
That's great news to hear! Did you take any final pics before selling?
Sorry, I did take pictures of it for the listing. None of the buyer taking it off my hands.

Here are the listing photos.

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Addicted
1980 P200E project, 2005 Stella Malossi 166 MKIII
Joined: 20 Jul 2018
Posts: 968
Location: Staten Island, NY
Fri Jul 19, 2019 3:03 pm quote
Pulled up to a red light on a street I have never driven down before today. Saw a vintage red front fender to a Vespa peeking out between two cars parked on the side of road and got all excited cause I've never seen another vintage Vespa on si. Pulled up through the light and it was this automatic i sold out in the wild with a top case installed!

Glad to see it's getting used! Unfortunately didn't get a pic of it cause I was driving.
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