I changed the serpentine belt and tensioner pulley this summer on our boat with Volvo Penta outdrive. The local marine repair shop wanted $400 just to drive 8 miles to our dock and that was BEFORE the repair. I figure it would have been $800 all-in with those guys and they were booked two weeks out!
Did it myself for $200 in parts and $60 for a torque wrench. I got to learn a lot of “boat yoga” in the process.
we’ve saved money by watching you tube videos....there seems to be a how to video on everything....