25 hp Mercury water pump

Ok guys don't mean to keep pestering with my motor problems but yall have good advice and I have looked and looked and can't figure out my latest problem. I decided to take turtlebaits advice and change my impeller so I had dad pick me one up. I have done enough looking since dark tonight to know that I should have bought a kit, which I may still do. Anyway I went out to the motor this afternoon and dropped the 4 bolts holding on my lower unit and I could get it to drop a couple of inches but no more. I put it back together and went reverse, then neutral, then forward each time putting it back together and when it wouldn't fall I moved the throttle a little. Again it is a 25 mercury two stroke 2005 model. I figure I'm missing something small but don't know what it is and would really like to learn how to do this so I can keep doing it. I already change the lower unit oil and grease the motor. I like to do stuff myself but don't want to tear my motor up.

Go back and check your shift linkage. Should have a small rod running from control handle down to lower unit. Has a connection some where. Make sure and mark anything you have to unscrew so it dosen't get out of adjustment when you go back together. My 2cts, Buy a book will save you a lot of greif. I picked up one at local dealer by Clymer for 35.00. Hope this helps some.

cray is right..

Take the hood off,look somewhere around back of the carb,work your shift to forward to rever'. until you see the linkage.The easiest part is taking it apart,pay attention to the linkage as how its connected.Care should be taken with small parts as not to lose them,may need someone to help you hold the foot while lineing up the linkage for rehookup.

yup, linkage..easy to take off but a little tricky to put back together

The connection is under the carb near the block. Easier to get at with the starter laying to the side.

wish4fish can you tell me the serial and model number? I might be able to find an exploded view of the motor. I do advise buying the kit, especial from a local dealer so you can ask what needs to be taken off. I just did this repair for a friend except on a 1995 Mercury 25hp. We learned that on models with a starter (don't know if yours is electric start) that the starter needed to be removed to reach the linkage. Once the starter was off it was a breeze to undo the linkage and get the lower unit off. The retainer clip that held the shift shaft just flipped up, then we slid the shaft off the pin holding it, and voila the lower unit came right off. I do advise leaving at least one of the bolts that holds the lower unit screwed in just a little so the lower unit does not drop on your feet. Like I said, if you can get me that serial and model number, I can probably find some resources for you. P.S I found YouTube to be an invaluable resource.

~afishyfella

Thanks again for all the replies I had a friend come over and show me how to take the linkage off, the only problem was that it had been a while since he had done it because it was his dads motor. We managed to get it off with the starter still on there but I thought no way with the starter on could I get it back on so I pulled it off, was scared to do it but I took a pic of it with my phone and got it back on there. cray what kind of book are you talking about? I have owners manuals to trucks I no longer own but I have lost my manual to the motor. Are you talking about just a owners manual or something else?

wish, he's probably talking about a repair manual. i forgot the website but there's one that sells repair manuals for most all motors or even have where you can see the pictures online. someone here i bet knows that site. pm barnacle bill. he knows more about motors than anyone i've read here. not knocking anyone you understand.

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wish4, there's where you can find a repair manual for your motor.

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Originally Posted by wish4fish

Thanks again for all the replies I had a friend come over and show me how to take the linkage off, the only problem was that it had been a while since he had done it because it was his dads motor. We managed to get it off with the starter still on there but I thought no way with the starter on could I get it back on so I pulled it off, was scared to do it but I took a pic of it with my phone and got it back on there. cray what kind of book are you talking about? I have owners manuals to trucks I no longer own but I have lost my manual to the motor. Are you talking about just a owners manual or something else?

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Repair manual. Most will list tear down and overhaul carb rebuild, reolacing pump, tuneup and adjustments. Also most of the aftermarket manuals will cover more than one size motor and different year models. I bought the one for my motor at boat dealer in Memphis. Look on ebay and you can probably find several.

I dont know if it will help but my buddy use this video to help him out with his yamaha YouTube - ‪How to Replace a Water Pump on a 25 hp Yamaha Outboard‬‏