I cant close my stroller

SOURCE: GRACO STROLLER FRONT WHEEL BROKEN

I have the same problem, the airline broke ours the last time we flew. I just found on Graco's website that you can order replacement parts. Here is the link, http://www.gracobaby.com/store/order/default.asp?N=10418+10413+10421&Ne=11
You'll need the model number and serial number. I found ours on a sticker under the footrest. For our stroller it's $19 plus shipping for the front wheel assembly.
Hope this helps.

SOURCE: installing graco carseat to valco tri mode stroller

http://www.gracobaby.com/catalog/what_is_latch.aspx
Hope this helped you

SOURCE: GRACO STROLLER FRONT WHEEL BROKEN

you can get the wheel here
http://www.amazon.com/Graco-Quattro-Deluxe-Stroller-Renaissance/dp/B000CEXO0C

SOURCE: reassembly of graco umbrella stroller

You can do this go slowly and be patient!

SOURCE: I am looking for a manual for a Graco stroller.

http://www.gracobaby.com/Instruction%20Manuals/archive/760-1-99.pdf
this link should take you to the manual.