How To Diagnose a Faulty Charging System on a Vespa Scooter

Diagnosing Battery Charging issues on a Vespa LX150 or ET4
Parts that will fit 2001-2009 ET4 150 or LX150
486062 Voltage Regulator: www.scooterwes...
82572R Replacement Stator with better upgraded Flywheel: www.scooterwes...
828135 Stator: www.scooterwes...
436783 One time use Lock Nut for Flywheel: www.scooterwes...
TOOLFLY Flywheel Puller: www.scooterwes...

[@sals26]

Well I found the regulator, it's under the right side panel, a bit of a PITA to access but not too bad. Anyway, I just wanted to once again thank Robot and Scooter-West for saving my butt and providing all this DIY servicing info. After a five minute check with my multimeter I was able to determine the stator/rotor assembly was in good working condition and neither was there any issue with the loom. A few clicks later I had the new regulator on order from ScooterWest and three days later it was here! I worked in the motorcycle industry for 30 year and can testify that S-W is the best I've experienced. Great show guys and gals !!!

[@zeero62]

Thank You....very imformative for a guy trying to resurrect an ET4 after 4 years of not being ridden. Step 1, blow all the dust off, Step 2, New Battery; all charged up. Step 3 Do all this other stuff on this video until I can get it to start....Thank you SO MUCH.

[@briansheen1303]

Another brilliant video from Scooterwest. 👍

[@evanelias-rees7872]

anyone else watch these videos just to see robot even if you don’t have the scooter he’s working on?:)

[@harrywilliams2005]

Awesome video. Very well done and extremely helpful. Thanks for the part numbers too.

[@martinryder6910]

By far the best tutorials video on youtube

[@ro63rto]

Now do a video for the PX charging system and electric start please.

[@1960ARC]

Watched whilst eating lunch, very much enjoyed your video 🤖 Robot! Very well explained.

[@VespaMotorsport]

Awesome! Thank you!

[@marlonsampson4901]

Thanks for this video first time seeing your stuff and subscribed straight away! Realy appreciate the way you explain everything so clear and detailed.

[@HookupCultureCommunity]

I know for a fact I have draining somewhere because the new battery (still under warranty) only lasted a week. The common issue it seems with my scooter, an ‘07 lX50 is that even when I jump it it now won’t even start. It would have trouble starting on/off for awhile until it just gave out altogether. I’ve been riding it since I got it used months ago I hear it’s an ignition coil issue. CDI. Cheers!!

[@chaitiger9192]

Picked up a 99 et4 that had been stolen and dumped in a lake. Owner retrieved it in the morning so damage minimal. I drained fuel, changed oil etc, cleaned carby, replaced battery. Was running great but now battery dead and keeps dying after being charged? Thanks for the video, I'll start applying your process to find the problem!

[@dav246panter2]

Greetings from Holland, your channel is the best. I own a ET4 50cc, and it stops after 5 miles, no power. 5 min later it starts and runs for 5 miles. I checked almost every thing. Did i missed something . Cheers Tom

[@luishernando217]

You are the best, Thank you for share all your knowledge

[@harrywilliams2005]

Awesome video. Well done and very helpful. Thanks

[@geofflock2]

Great explanation Robot. I have a later model 150LXie which seems to blow the headlight bulb frequently. Any hints you can include in your next video please

[@briansheen1303]

Any videos on the Vespa GT 125 (2004 carb model)? or what would be the nearest type Vespa model to the GT 125 (carb model)? TIA

[@charlesdao4000]

tks for supper useful sharing ! Charging should be > 12.9v !

[@agushermansyah5510]

please help I have a problem with the primavera aniv 76 sedometer when it fits the contact, the key symbol always appears but it flashes and doesn't disappear for long 

[@manuelrando484]

Valiosa información, Saludos gracias.

[@deas1972]

Hello from Sweden. Do this tip also work with Primavera?

[@Ano-zf5nu]

I have a Vespa LX50 my daytime running lights and rear light always burn after 1 - 2 days brake light and the high beam works, what is the problem, I have already had it made 3x!

[@cilipotong762]

When I check battery volt when engine off 12.5, When start engine it goes up to 14v and highest 18v. What the problem?

[@quitob1]

Great video! My motor was replaced but my battery keeps dying. I'm trying to read the yellow wires (following closely instructions at 11:37 in video) but nothing changes on the multimeter. When I then test the yellow wires (per 13:28 in video), the multimeter only reads 1 or 2 volts when revving the engine. Is the regulator the issue or the stator? My new 12v battery measures 17v at the contacts. Thanks, Robot!

[@SLAYER-nm5zw]

Did you find the fault? I have the same issue

[@quitob1]

@@SLAYER-nm5zw yes the stator was bad. I replaced it and the battery charges well now.

[@shyamsharmas-invomahamai2552]

Please suggest best magnet and coil for lml vespa nv self start My lml vespa has a problem in it Not to do battery charge properly I want to change the set of magnet coil

[@sals26]

I have a 2006 Fly 150. Could anyone tell me where the voltage regulator is located? It's not in any of the ones mentioned in the video. TIA, Sal in FL

[@chrischarousis3074]

Hey guys love your videos on youtube.Unfortunately im not even close to your continent to get my vespa to you!I've been having a problem with my 20' GTS 300 since i got it.It won't start when it gets hot.The pump primes the checks are correct everything seems to be just right,the starter motor spins but it won't start the engine.It never does that when cold,only when hot.Got it to my local dealer and they swapped cams per factory say but that didnt't change the situation and i just got it back.Have you had any case like mine and what was the fix?I'd really appreciate if you can point me to any direction! thanks and keep making great content!

[@george5590]

i have a bad vibration when i apply my front brake? on my px 200 any idea please .george australia

[@sakm6696]

Hello sir. I have electrical problems on my lx 150. 2times every year I need new battery plus 3-4 times my headlights are going off. I live in Greece and nobody around here has a clue about what is going on. I’m really disappointed cause I like my scooter.Any ideas please???any advice would be so helpful.Thanks in advance

[@TRaul7]

Voltage regulator most likely!

[@larrybuckner4827]

I have a 2007 jcl scooter it's the Chinese version of the honda reflex 250cc do you know where the voltage regulator is located ?

[@MrMLajoie]

would this problem cause your check engine light to come on?, even tho everything is working and sounding fine?

[@adamliz8172]

Hey Robot, here in UK i have the pre leader 1996 et4 125cc, could i change out piston and head and put on the Piaggio 150cc head and piston? and if so would i gain anything? cheers

[@strubbleler]

hey! i have a piaggio liberty delivery 80cc! i replaced my voltage regulator because the blinkers blew up! then when i had installed a new one, it blew up again! now im finally going to check with this multimeter! hopefully i can finally get answers! ( the engine cuts out when i use the blinkers, but now it doesnt want to start up at all anymore )

[@oliviergagnon7537]

Hey i have similar issue did you find the problem?

[@strubbleler]

​@@oliviergagnon7537 hey man, not really yet, ive recently replaced the starter motor, but the bike loses its charge quickly, before getting the chance to fire up. someone else had given me the idea to wire in another ground in the loom where the voltage-regulator is located. other than that, i may try a new CDI, sometime , because i had one burning out on me. ( i derestricted it ) do you want to stay in contact, see if we can figure this problem out for our bikes, together? :)

[@strubbleler]

furthermore, ive fiddled around with the multimeter, but the battery gives all the correct parameters, 12v when idle, 14'ish volts when i engage the starter, but then it power is lost, but the battery's voltage remains nominal

[@elkoola]

Thanx

[@nalakasampath5310]

Hello sir, plz give vespa et 250cc Efi modle battary charging diagram and cooling fan wirering diagram

[@charlyvalenzuela1412]

Forever vespa

[@user-or7bl7xn5m]

Should the charger be replaced if the charger overcharges?

[@marc-andreviau3560]

Correct me if im wrong but if it overcharge way to much its a regulator problem. Not stator.

[@moonshine528i]

What about over charging?

[@bikearena6777]

I need same halp I have vespa primavera 150 model 2018

[@safarijonas3490]

Will those parts fit my 2001 et2?

[@shakeelabbas7816]

Is video ko hindi me banao

[@randygravel2057]

Lost me after et4