Wed Aug 03, 2022 1:59 am

Ossessionato
Vespa LX150 GTS250ie GTS300x2
Joined: 11 Dec 2009
Posts: 2281
Location: St. Pete, Fla
 
Ossessionato
Vespa LX150 GTS250ie GTS300x2
Joined: 11 Dec 2009
Posts: 2281
Location: St. Pete, Fla
Wed Aug 03, 2022 1:59 am linkquote
I got this message from my brother, who I sold one of 2016 300 GTS's, while he was at the Floyd Music Festival.

Ran fine when I took it for run last Saturday. We got up to Floyd today and no power, not running smooth and barely pull up small incline. Any thoughts? No internet in this cow pasture.

We discussed it and covered all the usual problems, but due to the continual ran and deep mud he decided he would leave until he got home.

On the way home he stopped a Josh's shop in Mebane, NC a great mechanic. To our surprise the problem was the kill switch. My brother used it occasionally and evidently it was breaking the connection just enough to make the scooter run rough. Josh, not having a spare on hand, took the switch apart, cleaned and reassembled it.

I have never heard of the kill switch operating like this. And, if you are in NC and need a great scooter mechanic Josh is the one. It is the Josh and the Scooter Garage and though google maps says it is "temporally closed" it is open and doing business


Josh after fixing switch checking everything over.

Wed Aug 03, 2022 3:47 am

Molto Verboso
1979 P200E (sold) / ZNEN Amore 150 (sold) / Genuine Buddy 170i / Genuine Stella 4T /Aprilia Sportcity One 50
Joined: 31 Jul 2014
Posts: 1510
Location: Grand Rapids, MI
 
Molto Verboso
1979 P200E (sold) / ZNEN Amore 150 (sold) / Genuine Buddy 170i / Genuine Stella 4T /Aprilia Sportcity One 50
Joined: 31 Jul 2014
Posts: 1510
Location: Grand Rapids, MI
Wed Aug 03, 2022 3:47 am linkquote
I have an intermittent stalling problem with my Stella. I mentioned it here on the forum and another user almost immediately mentioned "kill switch". I don't think that's the issue with my bike, but the fact that it was mentioned so quickly is very telling.
Wed Aug 03, 2022 4:42 am

Ossessionato
Vespa LX150 GTS250ie GTS300x2
Joined: 11 Dec 2009
Posts: 2281
Location: St. Pete, Fla
 
Ossessionato
Vespa LX150 GTS250ie GTS300x2
Joined: 11 Dec 2009
Posts: 2281
Location: St. Pete, Fla
Wed Aug 03, 2022 4:42 am linkquote
I missed that one. Just recall all the ones of not starting but not of intermittent running problems. That said it must be more frequent than I am aware of since that's what Josh went for.
Wed Aug 03, 2022 5:09 am

Molto Verboso
2018 Vespa 300 GTS Touring
Joined: 04 Oct 2015
Posts: 1150
Location: NYC
 
Molto Verboso
2018 Vespa 300 GTS Touring
Joined: 04 Oct 2015
Posts: 1150
Location: NYC
Wed Aug 03, 2022 5:09 am linkquote
I am having a problem with the Vespa failing to start at times. Everything is fine, battery is fine, no fuses blown, the relay is fine. I toggle the kill switch and sometimes it will fix the problem and other times it wont.
For now I have not bothered to open it up and clean the contacts etc. I plan to do that end of the month.
But it is weird, I have left it parked at places and then taken the subway back home, gone back the next day it starts up fine.
I am guessing it is the kill switch that is misbehaving and cleaning it may help. Scooter isn't running rough when it is running it is perfectly fine.
Wed Aug 03, 2022 6:33 am

Member
2022 Liberty Baci Perugina
Joined: 23 Apr 2021
Posts: 17
Location: Hilo, Hawaii
 
Member
2022 Liberty Baci Perugina
Joined: 23 Apr 2021
Posts: 17
Location: Hilo, Hawaii
Wed Aug 03, 2022 6:33 am linkquote
I park outside. My Piaggio MP3 would have problems with my lowbeam light not working so I noticed the highbeams wouldn't work either. In my frustration I rocked the very stiff switch a few times. It started working correctly after that.
So I have made a habit now of rocking all the switches once in a while even in my car and in my house. I guess everything needs exercise in this world. You are lucky to find such an aware and talented mechanic to identify the cause and repair the kill switch.

Last edited by Bigdaddy808 on Wed Aug 03, 2022 7:35 am; edited 1 time in total
Wed Aug 03, 2022 7:03 am

Hooked
2020 primavera 150
Joined: 08 Aug 2020
Posts: 390
Location: Lorton virginia
 
Hooked
2020 primavera 150
Joined: 08 Aug 2020
Posts: 390
Location: Lorton virginia
Wed Aug 03, 2022 7:03 am linkquote
I do the same with any type of rocker switch.
Thu Aug 04, 2022 3:08 pm

Member
Looking for a 150, maybe a 250 or 300
Joined: 18 Aug 2009
Posts: 7
Location: s/e Louisiana
 
Member
Looking for a 150, maybe a 250 or 300
Joined: 18 Aug 2009
Posts: 7
Location: s/e Louisiana
Thu Aug 04, 2022 3:08 pm linkquote
Good to know.
Thu Aug 04, 2022 3:18 pm

Molto Verboso
2019 Supertech (EURO3/APAC)
Joined: 17 Nov 2020
Posts: 1821
Location: Batmania aka Melbourne, Australia
 
Molto Verboso
2019 Supertech (EURO3/APAC)
Joined: 17 Nov 2020
Posts: 1821
Location: Batmania aka Melbourne, Australia
Thu Aug 04, 2022 3:18 pm linkquote
if you ever pull one of these switches apart be very careful. there is a tiny ball bearing and a tiny spring, both easy to loose. (I pulled apart both the kill and asr switches on my supertech as they were a bit sticky)
Thu Aug 04, 2022 3:25 pm

Molto Verboso
2018 Vespa 300 GTS Touring
Joined: 04 Oct 2015
Posts: 1150
Location: NYC
 
Molto Verboso
2018 Vespa 300 GTS Touring
Joined: 04 Oct 2015
Posts: 1150
Location: NYC
Thu Aug 04, 2022 3:25 pm linkquote
steelbytes wrote:
if you ever pull one of these switches apart be very careful. there is a tiny ball bearing and a tiny spring, both easy to loose. (I pulled apart both the kill and asr switches on my supertech as they were a bit sticky)
Thanks for that tip..
After cleaning the switch with something like rubbing alcohol or brake cleaner, do any of you use die-electric grease to keep the contacts working when moisture interferes.
Thu Aug 04, 2022 4:39 pm

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41203
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41203
Location: Pleasant Hill, CA
Thu Aug 04, 2022 4:39 pm linkquote
baba12 wrote:
Thanks for that tip..
After cleaning the switch with something like rubbing alcohol or brake cleaner, do any of you use die-electric grease to keep the contacts working when moisture interferes.
You always should - corrosion can happen just with dissimilar metals touching.
Fri Aug 05, 2022 11:25 am

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41203
Location: Pleasant Hill, CA
 
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: 26 Aug 2007
Posts: 41203
Location: Pleasant Hill, CA
Fri Aug 05, 2022 11:25 am linkquote
I'll add - it seems it's only in NA that the MSF courses teach that you should use the kill-switch to turn the engine off. Elsewhere (including Advanced Motorcyclist training in the UK) you are advised to never use the kill-switch except in an emergency, and to always use the ignition key instead for daily use.

The MSF say this is to teach muscle memory so that in the event of an actual emergency you'll know what to do. This does wear out the switch - this *has* caused problems, often reported on MV - like this thread!

The RoTW teaches you to use the key so you don't forget to both turn it off (headlights have been wrecked on older models, batteries have been flattened, etc...) and take it out (security). Also, the kill-switch, being always unmolested, will definitely turn off the bike if and when eventually used.
Fri Aug 05, 2022 11:45 am

Molto Verboso
2018 Vespa 300 GTS Touring
Joined: 04 Oct 2015
Posts: 1150
Location: NYC
 
Molto Verboso
2018 Vespa 300 GTS Touring
Joined: 04 Oct 2015
Posts: 1150
Location: NYC
Fri Aug 05, 2022 11:45 am linkquote
I never use the kill switch to turn off the engine. When I am opening the seat sometimes it will sometimes knock the switch into a half ass off position.
Fri Aug 05, 2022 1:32 pm

Veni, Vidi, Posti
Joined: 22 Oct 2011
Posts: 5044
Location: Tega Cay, SC
 
Veni, Vidi, Posti
Joined: 22 Oct 2011
Posts: 5044
Location: Tega Cay, SC
Fri Aug 05, 2022 1:32 pm linkquote
jimc wrote:
I'll add - it seems it's only in NA that the MSF courses teach that you should use the kill-switch to turn the engine off. Elsewhere (including Advanced Motorcyclist training in the UK) you are advised to never use the kill-switch except in an emergency, and to always use the ignition key instead for daily use.

The MSF say this is to teach muscle memory so that in the event of an actual emergency you'll know what to do. This does wear out the switch - this *has* caused problems, often reported on MV - like this thread!

The RoTW teaches you to use the key so you don't forget to both turn it off (headlights have been wrecked on older models, batteries have been flattened, etc...) and take it out (security). Also, the kill-switch, being always unmolested, will definitely turn off the bike if and when eventually used.
I would clean it with contact cleaner specifically made for electronics and then load it up with dielectric grease. Honestly, I guess this is a consideration to have a kill switch on a scooter which I never thought about. On a vintage or motorcycle I would be more likely to just pull in the clutch.
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