Vespa px200 won't start - 2005 Vespa PX 125

i think it is the CDI-box (at the top end of engine) not working.
check the connectors (pull the rubber cover)
- or better get a new one

-do you use the right key? (thick brown/black colored) after aou turn the key on, does a light go on on the dashboard?
- seems to be an issue with the lock code of the key (wrong key)
then the engine immobiliser does not allow to start..

- I think you splashed water into the fan shroud on the right side of the engine (see picture)
- this causes a malfunction in the ignition and needs to be serviced at a Vespa dealer

do you pull the choke before start?
-see picture
or change also the spark plug with a new one

Hi, try pasting either of the first two links below into your address bar. Neither are specifically for a DISC model but they will be very similar. The third link is more like a drawing than a diagram but it may help.

http://www.vespamaintenance.com/elec/diag/index.html http://www.scooterhelp.com/electrics/pages/VSX1T.px200.html#nobatt

http://beedspeed.com/html-pages/VespaPartDiagrams/vespa-wiringloom-p200e.jpg

Had same problem a few weeks ago myself. Turned out to be damaged gasket between the carb and the carb body. The two stroke oil filled the carb box which then went into the air intake hose and was running out of the frame around the side panel locator hole onto the floor and exhaust. Replaced the gasket and not happened since.

the fuel tap feeds from two separate tubes, one sits higher in the tank as main fuel and a lower one feeds from near the bottom of the tank(reserve) the main pick up tube may have a blockage, there are usually small filters on the ends of these tubes that can get blocked, you may need to remove fuel tank to clean

The gears seem odd to people at first but are actually very easy to master. For first, pull in the clutch (left lever) and twist the entire grip back (towards you). Release the clutch and bingo. For second, third and fourth pull the clutch and twist the grip forwards one step at a time. If you look at the left handlebar you'll see the little numbers and a mark on the main headset. If these don't line up you might need to get your shifter cables tightened and lined up.