Piaggio X7 carb problem

[milly]

Have a problem as can be heard in video. Starts fine and ticks over as revs increase when gets near full throttle starts pulling back.

Change coil and lead over but still the same.

The man in garage who was looking at it for a friend got a shock off the cap so I shall try another tomorrow. Not sure on these things as never had one carb has been cleaned out also.

Any help appreciated.

[90GTVert]

Sounds like a good idea to replace the cap if it's shocking people. Surging under throttle like that can also be a lean condition. Clogged main jet, fuel system issue or airbox/filter damage or missing filter.