Greetings all, I am located in NW MT. I have been mowing my 5 acres for 15 seasons with my Husqvarna YTH2148B 3 blade 48” cut model. Have had to install new mandrel assembly to find that my adjustment is gone. There are two belts on this three blade model. Have ordered, and received, a new belt that is 82” in length. Is this the drive belt from the engine pulley to the mower deck. Seems that all my adjustment is gone with old belt. Plus, where can I find the repair manual for this old model. Thank you all in advance for any and all information. MTG