Vibration on my lambretta engine

[kennystag]

Hi all,
I do not know if this is normal, but there is a lot of vibration coming from the engine of my sill gp,it gets worse when I rev her,any Ideas what the cause may be.
Cheers
Stag is my nick name

[MickYork]

Couple of options: engine mounts worn, out of balance crank. I'm sure there will be other suggestions as well.

[Digger]

It's a Lambretta.

[bazza3004]

Take flywheel cowl off and look to see if flywheel is running out of true.

[Fireman Ash]

Mounts in my experience or when I had a rock hard cheap asian seat on my serveta