Does anyone have a manual in english for this cash register?

Z436, September 2010

yes

Harry Hynes, August 2015

It is very hard to find.
C-tech collective have an english user / programming manual here:

http://the-checkout-tech.com/manuals/cashregisters/Sharp_ER-A490_instruction_english_manual.html

Also, the dealer manual is here:

http://the-checkout-tech.com/manuals/cashregisters/Sharp_ER-A490_programming_manual.html

If you are setting up the machine from scratch, get the dealer manual as well. Just copy and paste the links above into your browser

Registerman, September 2010