Instruction manual coverting to stage 2

Without knowing the exact model you have, I would suggest you check out the baby stroller section on Manualsonline. They have many manuals with instructions available for free download: http://babycare.manualsonline.com/manuals/mfg/safety_1st/safety_1st_stroller_product_list.html

If you have the product information, you can enter it in the Safety1st site and look for a manual there: http://safety1st.djgusa.com/webapp/wcs/stores/servlet/InstructionSearchView?storeId=10154&catalogId=10051&langId=-1