Mercruiser 3.0L "V" belt installation 

i sat looking at the whole setup for like 20 minutes stressing out about taking the mount apart... the service manual didn't say anything about how to do this... but yeah, after watching this video I had the new belt on in like 10 minutes :) thank you so much for posting this :)

Thank you you saved my memorial week boat life

Very good video. It made the job easier knowing what to expect. I used a small bottle jack and a 3/4" thick piece of hardwood under the front main bearing area. I put just enough lift on it to take the weight off the engine mount. I had to pry the mount away from the engine to get the spacer out and to replace it. Mine is a 1992 Bayliner and it took a 40.5" belt. The whole job took 15 minutes.

Just want to say thank you. Just replaced my belt on my 85 cobia 3.0 merc. Your video was clutch

Great video. I've got a 2001 motor and 15395 was the right belt number at any auto parts store. Don't forget to recheck tension after a day or three with the new belt to ensure it's still nice and taut.

Great clip, it helped me decide which belt I needed. Next time I would maybe go with a 37 looks like it is almost maxed out on the alternator side.

Good work man, Made the job way easier. I used a small hydraulic jack and a piece of wood on the lip of the pan. After I put the spacer back in and bolted down the two bolts, I loosened the top engine mount nut and was able to remove the water pump pulley more easily.

Excellent, 1985 motor and it's the same set up. Thank you for the video!

Thanks ! Used your belt model number and a scissor jack - 5 minutes later, got the new belt on !

The pulley and the mount where 1 mm apart impossible to squeeze the belt, but I followed your recommendation and success! I remove the spacer and jack up the engine loosening bolts from the other side of the mount bracket, I lifted just enough to squeeze the belt between the pulley and the mount. thanks ! I used NAPA 25-7395 v-belt, perfect fit

great vid. I was wondering how that worked out. my mercruiser is a 1984 4cyl. set up just like yours. tons of help, this was. thanks a lot!

The marina told me I had to jack up the motor and remove the Engine mounting bolts.???Removing the spacer was excellent and quick. Great way to change the belt.

Break those 4 bolts loose on the pulley and the pulley comes right off, making it easier to get the belt in place. Most Mercruiser engines on boats manufactured after 2000 or so don't need to be scissor jacked, engine should be firmly in place even after that engine mount spacer is removed.

make SURE that you install the spacer block correctly. you can install the block upside down and this will cause the belt to rub on the block and destroy it. the clearance between the block and the belt is very small. the belt will just clear the block when installed the right way.

You sir ROCK!!!! I was having hell with this until this video. Thank you

The belt for this motor is a 15395...they been using the same belt since 1988...15400 probably works but thats not the belt that its supposed to be....just thought I would throw this info out...and the power steering belt is a 15370 to the person that asked

The Autozone Duralast 15400 (40") worked for the Alternator and from my measurements the 15370 (37") is right for the power steering. $9 each. My Alternator belt was really torn up and slipping big time. Will be curious how my temperatures run now. I was typically 200 degrees (the alternator belt also turns the water pump). Thanks for the video.

Thank you so much for this video! It helped a lot! I ended up needing a 41” V belt and worked like a dream! Only thing I need now is my adjustment bolt for my alternator is stripped. Was able to install with locking vice grips but definitely want to replace, any help on that would be appreciated!

Thanks for taking the time to post man, you saved the day!

good job man! Helpful thanks.

Thanks for the video,,, This helped a lot ...

Thank youuuuu so muchhhh

This video was extremely helpful as I successfully replaced the belt with no issues! 🙌🏽. I have a new problem now, looks like I need to replace my alternator and looks like you have the same engine as mine. Do you happen to know what type of alternator I need by chance?

Where do you put the jack, not under the sump?

Semplice ed intuitivo. Avevo bisogno un suggerimento per sostituire la cinghia, in quanto avevo un dubbio se smontare i due bulloni come nel video; ora so come devo fare. Grazie. La mia cinghia è 57-69143Q.

Thanks man!

Where did you put the scissor jack?

Is it necessary for the spacer to be place back on after the belt is installed? I tried for 30 minutes to get the bolts back on to secure it and it wouldnt connect to the other end.

do you know what size is the power steering belt?

How tight should the belt be?

Of this bent snaps and the engines running does it screw up the timing at all?

Hallo from Germany best eastern I like to know how much you need to pay for a use Motor like this and what place to buy THANKS

jack against the the oil pan?

:) thank you

I have a 87 mayliner Capri 20 ft. what size fan belts do I use and I need a neutral safety switch wit cobra engine

u never show how to put the belt inside

he says its hard to get the pully through the pully..then push the pully through and get it on the pully??????in America we call it a belt!