OP
@rank_bajin avatar
UTC

Hooked
MP3 - 500
Joined: UTC
Posts: 427
Location: Alabama, USA
 
Hooked
@rank_bajin avatar
MP3 - 500
Joined: UTC
Posts: 427
Location: Alabama, USA
UTC quote
The engine won't kick over when pulling on the right brake lever, but will when pulling on the left.

I'm worried that if the left lever suddenly quit, I'd really be stuck.
UTC

Molto Verboso
2015 MP3 500 ie Business
Joined: UTC
Posts: 1154
Location: Belgium
 
Molto Verboso
2015 MP3 500 ie Business
Joined: UTC
Posts: 1154
Location: Belgium
UTC quote
And the question is . . . . ???
@jkj-fz6 avatar
UTC

Ossessionato
BV400, Primavera 150, Yamaha Zuma 125
Joined: UTC
Posts: 4274
Location: Twin Cities, Minnesota
 
Ossessionato
@jkj-fz6 avatar
BV400, Primavera 150, Yamaha Zuma 125
Joined: UTC
Posts: 4274
Location: Twin Cities, Minnesota
UTC quote
sbaert wrote:
And the question is . . . . ???
Is the right brake lever switch broken?
UTC

Hooked
2016 Mp3 500ie Sport
Joined: UTC
Posts: 321
Location: California
 
Hooked
2016 Mp3 500ie Sport
Joined: UTC
Posts: 321
Location: California
UTC quote
Some additional diagnostic info might help narrow down the issue.

Are there other symptoms with the brake leaver?
Are any other systems affected by the brake being engaged or idled?
Brake lights light up when the brake leaver is engaged?
Do the brake calipers engage and the bike does not role / move when the brake is on?
Any recent rough weather, muddy roads, or other recent source of corrosion?

This is the parts diagram for the 2009 MP3 500ie. It indicates as "stop button" (parts 11) which appears to be the part that would engage with the brake. It might be worth removing the plastic covering the steering tiller to expose those connections for inspection for damage.

https://www.parts-piaggio.com/piaggio-scooters/500-PIAGGIO-SCOOTER/MP3/2009/MP3-500/Electrical-system/Selectors--Switches--Buttons/1209/42/20072/2687
@jimc avatar
UTC

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43717
Location: Pleasant Hill, CA
 
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43717
Location: Pleasant Hill, CA
UTC quote
For goodness sake, just replace the RHS brake switch. Very cheap and easy to do. Keep a spare handy too, these switches get a lot of use and can fail.
OP
@rank_bajin avatar
UTC

Hooked
MP3 - 500
Joined: UTC
Posts: 427
Location: Alabama, USA
 
Hooked
@rank_bajin avatar
MP3 - 500
Joined: UTC
Posts: 427
Location: Alabama, USA
UTC quote
Thanks for the various suggestions, and yes the lights do come on and the brakes do tighten up on the calipers.

I like the jimC suggestion of replacing the switch, however I must confess to suffering a complete fear of anything electrical. So could someone point me in the direction of where the switch is located.

Thanks again for all your input.
@jimc avatar
UTC

Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43717
Location: Pleasant Hill, CA
 
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 43717
Location: Pleasant Hill, CA
UTC quote
The brake lever operates the switch directly. Just uncover the rear of the brake lever, unclip the wires from the switch, unscrew the old switch and screw in a new one. Reconnect the wires. Button up, ride off.
@web-tech avatar
UTC

Veni, Vidi, Posti
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
Joined: UTC
Posts: 8951
Location: Ashburn, Va. Home to the Internet
 
Veni, Vidi, Posti
@web-tech avatar
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
Joined: UTC
Posts: 8951
Location: Ashburn, Va. Home to the Internet
UTC quote
As Jim says the switch is easy to replace, just be gentle with it cuz it is plastic.
OP
@rank_bajin avatar
UTC

Hooked
MP3 - 500
Joined: UTC
Posts: 427
Location: Alabama, USA
 
Hooked
@rank_bajin avatar
MP3 - 500
Joined: UTC
Posts: 427
Location: Alabama, USA
UTC quote
Thanks guys for all your input, parts are on order with AF1 Racing.
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