To my knowledge Husqvarna does not have service manuals for their equipment. Only thing you might find is a service manual for the hydro, but they normally don’t talk about pump fans.
#3
StarTech
You remove the transaxles to replace the fans. Fans are Hydro Gear PN 51365.
I was afraid of that. I have mowers from Husqvarna, Hustler and a Big Dog and while the Husq is great when working I am finding it to be the least serviceable and most expensive to fix. I am considering just installing a 12v blower to cool hydros!
#5
StarTech
The procedure is the same as Hustler. Remove transaxle. Order hydro parts instead paying Husqvarna for being a middle man.
Yes always use third party source for parts. I have hustler manual tho many differences the basis should be same. Have replaced fans on Hustler. Not hard and fans cheap compared to bigdog