Modern Vespa

Hi guys,

I order a new crankshaft part number 8411965002 CAT 2 (as per the catalogue) and comparing it with the old one that snapped it actually doesnt have a shoulder so the timing chain sprocket/pinion cannot go all the way and sit flush.
I measured the internal diameter of the chain sprocket/pinion and its 17mm and searching online for the part number I am unable to tell what the diameter is of a new one.
The shoulder on the new cranshaft is about 19.5mm so I guess I need chain sprocket/pinion with that diameter.
Part number 82782R
Another issue is that on the other side the old one had a woodruff key slot but the new one doesnt...
Please help or if you have data/catalogues let me know what is correct.
Help!

Return it, looks like they didn't finish machining it. I can also see that the oil passage isn't drilled through. Q.C. was on vacation…

Thank you!
I was able to get the appropriate timing chain gear 82782R (19.5mm) for it and I removed the woodruff key from the previous crankshaft and fitted it on the new one, it looks like they don't come with it from Piaggio.

I thought you said the new one didn't have a machined slot for a Woodruff key? Did you get a replacement crankshaft?

The empty slot was there except wasnt on the photo so after checking it again and comparing it with the old and having a look online I was able to remove it from the old one and put it in the slot on the new one.