Hi there.
I have a 2010 ex35.
My belt is cutted out yesterday.
Today I bought belt, battery(battery drain)
I removed bully, tensing pull cause some of belt stuck in nut.
When I put it back, belt is loosen.
How to tight belt?
Ex35 is different to g35
Could you help me out? Picture. Diagram...
Both pulley area, I don't know which bolt is adjust

Belt System has an auto tensioner so no manual adjustment is required.
If the belt is loose then it either is installed incorrectly or you have the wrong size belt.
In my 2011 owners manual on page 8-15 it shows how the belt loops round each pully.
I'd post a pic but its such a pain to do so on this site.
Check your owners manaul or download it.

http://www.nicoclub.com/archives/infini ... nuals.html

Check here on page 12 of the Maintenance section of the factory service manual for the belt routing:
http://www.nicoclub.com/manuals/EX/2010/MA.pdf

It looks like you've got all the pulleys back into place. The tensioner has to rotate quite a bit for the new belt to be installed. Using a serpentine belt tool, or a 3/8" breaker bar (or ratchet with a pipe on the handle), put the square end into the square hole in the tensioner. Rotate the tensioner counterclockwise and pin it in place with a bolt or allen wrench.

Here's a helpful link with instructions:
http://g35driver.com/forums/v36-diy/366 ... y-g37.html