We have Spacios here in New Zealand, and the fully translated owner's manual can be purchased from an online auction website called TradeMe. The downside is that you have to be a New Zealand or Australian resident in order to register or bid. I may be able to send you one over if you're in desperate need, otherwise you may be able to source one closer to home.
Here's a link to the auction anyway to show you what I mean:
http://www.trademe.co.nz/Trade-Me-Mo...-268017579.htm
If you're just after a repair manual for the engine, then you may as well use a Corolla Haynes manual (or similar) as it covers the 4A-FE and 7A-FE engines. The user manual in the link above covers everything however, including the interior and routine maintenance.