Volvo Penta Thermostat Removal and Replacement

In this video I show detailed step by step instructions on how to remove and replace the thermostat on a Volvo Penta boat marine engine. This video shows the process on a 8.2 502 engine. But the process is the same on the 7.4 454 engine and many others. Below are the links to the products used in this video. A lot of viewers have requested I provide Amazon affiliate links to help them find the products I test and as a way of supporting the channel through commission. If you purchase a product or service with the links I provide there is no additional charge to you. I always recommend shopping around for a better price. Thank you for supporting the channel through affiliate links. Thermostat purchased here: I hope you find this video helpful. Make sure to leave any comments or questions below. Dont forget to LIKE SHARE and SUBSCRIBE for more content like this. Partial Video Transcript: 00:01 today were working on our volvo penta 8.2 gsi very similar layout to the 7.4 so if youve got a 454 engine or a 502 thats going to be a very similar layout the 496 is a little bit different but a lot of similarities in the the 496 or 8.1 liter as well um same goes with the mer cruiser theres a lot of similarities between these components are a little bit different but overall theyre very similar motors so what were going to be doing today is replacing the thermostat and on this particular motor 00:35 its going to be in the metal housing right here weve already got our flame arrester aka air filter off so the bolts that hold this housing down one of them is right there and the other one is back here so what we need to do is get the throttle body off the throttle body on this particular motor motor is held on by four bolts one two and then two more down here as well so im gonna get those off and get this throttle linkage disconnected and then well start working on the thermostat housing itself 01:16 weve got those four bolts off and i took this nut off to get the throttle linkage disconnected put the nut back on just so that its there it doesnt get lost now if you tilt the throttle body back you can see weve got a little bit of access here but i think we need to disconnect this hose as well so we can lean this entire thing back theres a few wires connected to the throttle body those two sensors right there and im going to disconnect those just so theyre out of the way and then im 01:52 going to disconnect this hose right here so that i can um you know what actually im going to disconnect this hose so i can lean this entire thing over here lets do that i took off these two hoses that one in that one and laid them off to the side and now weve got a clear picture of where our bolts are theres one here and theres one here theyre 14 millimeter head bolts for this one youre not going to be able to use an open-end wrench or even a closed end youre going to have to use a socket 02:29 and as you can see the throttle body is sitting right above it so youre not going to be able to get a socket with a straight shaft on there youre gonna have to use a swivel like this so im gonna put my socket on here with an extension on the end of it and then to my ratchet and then hopefully that should give me the clearance i need to be able to loosen that guy up now that weve got those two bolts out the thermostat housing is loose and i went ahead and loosened this clamp and this clamp im going to pull these 03:40 impeller and the impeller had some bits that fell off of it i wanted to make sure that we pull the thermostat in case theres any of those plastic bits from the impeller that got lodged in here it doesnt look like they did i think most of the plastic bits were right in the impeller housing for the water pump so were gonna pull this guy out put a new thermostat in and i dont know if you can see theres a little bit of gasket material on uh on this surface here were gonna pull that and put a new gasket on as 05:51 new thermostat the housing gasket that goes between the upper and lower housing and then the o-ring that holds the thermostat into the housing if you dont remember how it came out first the thermostat will go in there then this o-ring will go into that groove that will hold all that in there that gasket goes here on this surface between the lower housing and the upper housing and then uh so that that gasket im gonna put in last before i put the bolts through and everything before you put that uh the housing onto the the lower,

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