I took off the seat, and did shortcut the relay like you recommended, it cranked and the engine started instantly.
Also when the engine cut-off switch is on, it only cranks which is an indication that the cut off switch works.
I took off the switch (pain in the ass), cleaned the contacts, with no luck. I also tried to shortcut various connections on the switch, with no effect.
ANy idea how the switch works? it seems like there is a round piece of metal which touches against another piece of metal when pressed, but I got no idea how to see what is suppose to happen, or what to measure on the electrical level.
WHat would be the next step? is the relay in this case working, as it started? Maybe cabling beetween switch <> relay? will try to figure out how to measure this as well
thanks a lot for the help
You can do almost anything on your scooter with help from online especially. I fix ALL of my own stuff no matter what it is, just one of those things LOL... One thing you can check, take out your seat bucket to expose the engine area. On the right side of the scooter you'll see this the starter relay, looks like this: http://ecx.images-amazon.com/images/I/31az6WVH0FL._SY300_.jpg
With the scooter turned off, use pliers to just tap the two 10mm bolts to complete the circuit. Bolt to bolt, it won't shock you with only 12v but it will spark. This should crank the starter over when jumperd. If it cranks that means the battery, starter motor, and wiring to and from are all good. If it doesn't, your have a bad starter or wiring problem. Start there. The next most likely thing is the actual starter relay, try taping it with a screwdriver or whatever (hammer is to hard) and try using the push button start. Just to make sure, has the starter worked since you bought it? J/w