Free Car Seat User Manuals | ManualsOnline Baby care manuals and parenting free pdf instructions. Find the parenting user manual you need for your baby product and more at ManualsOnline. GRACO CARSEAT INSTRUCTIONS MANUAL Pdf Download. EZ LATCH can only be used in vehicles that are equipped with LATCH or ISOFIX anchor points. To properly install car seat, you will need the following: • Original car seat instruction manual. If car seat instruction manual is missing, call 1-800-837-4044 to obtain instruction manual.