Husqvarna Rider 850

[Scotch]

Hi,
Just bought a Husqvarna Rider 850 second hand, and require housing and bearings for the cutter deck.
Can someone please tell me where I will find the serial number?
I've looked under the seat but can't see it.

Cheers
Scotch

 

[Scotch]

Now found the serial number.
It is:
Rider 850-12
4041154

Can anyone tell me if some of the the numbers refer to date of manufacture, and what is the differnce between a 850 and a 850-12?

Cheers
Scotch