Thanks to Fredrik Rønning I now have an english copy posted. Click individual pages below for a 6.2"x4.6" 200 DPI page. Taken from the original owner's manual supplied with the Vespa GS150. Files sizes are about 250K for a color page and 180K for a black and white

If you prefer a PDF file of all the pages click here for a 5.1MB file download.