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It's my understanding that all of the Mercury outboards smaller than 30hp are Tohatsu built. So basically, they are Tohatsu's with pretty badging. With that said, if you REALLY compare the Yamaha to the Tohatsu, you will see where Tohatsu cut a few corners to save a few dollars. It is less...

It's not "that" bad. Just use a GOOD quality genuine HSS drill bit, and a GOOD HSS tap, plenty of oil for lube and go slower than you think you need to be. I ended up using Nachi branded stuff and was impressed with it. The throttle tube is 67D-42119-01-00. $35 and change on boats dot net...

stuck at home with covid so might as well do something rather than nothing. After 4 days, there isn't much else to do--that I "can" do (supposed to stay "isolated"). I feel fine other'n a sniffle. I used an F40 (6X4) PT switch housing assembly. When you remove the grip on the F25 tiller, you...

Double and triple check your part numbers & sizes for the jets, and make sure you have them in the right places. yes, a motorcycle style manometer for carb sync is almost a requirement, as are the correct adapters that screw into the intake manifolds. It can be done without, but with, it...

Use a body saw.

without seeing them in person, be hard to say whether or not they can be welded. Aluminum is funny. If it's not perfectly squeaky clean, it's very very hard to get it welded properly. And when it comes to boats, getting the material clean enough is where the challenge lies. This is especially...

The jetting is staggered too. As I remember, pilot and main jets differ between cylinders. Also the prime start system only primes two of the four carbs. The passages in the bowls for the prime start tend to plug up, and they are no fun to get clean. If they aren't squeaky clean it'll be...

I don't have a manual, but the thought of a carb F50 isn't a nice thought. Those have to be one of the worst, hardest carbs to have to clean (successfully). I hated them. But once "right", that motor absolutely purrs at low speeds! Had a tiller version on a 548 War Eagle, briefly. Too much...

bowfished a good many times out of one identical to it. 88hp Jonny at first, blew that up and put a 200 on it (offshore), also a Jonny. Mid 50's with the 200 if you could stand the noise. had a 18" raised deck over the front, that we made. 18" over the top of the gunwales. Raised center of...

I live in an area that is world reknown for trout. 2 different rivers, just take your pick which one. I catch a few hundred a year mostly rainbows with a few browns and an occasional brookie. Last time out (sept) I had 74 in under an hour. I got tired of catching them and went home. I'd keep...

when u decide you're tired of it, you can get a 25 yamaha, and order a set of 20hp decals for the cowling. Or just put a 20 cowling on it. F20 models from 2019 and newer are the exact same motor as the 25, ecu is different and I think that is the only difference (but I haven't looked that...

been through this. motor is too small for that hull. I wouldn't use less than a 20hp. I also understand some waters are 10hp max, as was the local lake for eons. They lifted the hp restriction finally. If that is your case, you have no other choice. When you put the 15hp carb on it, you're...

mine came factory with a diamond tread floor. The low deck is just plain flat aluminum. What was said about diamond tread getting hot is true. So is the "hard on knees" statement. But then again so is wood, it's hard and it also gets warm out in the sun. So what I did was get some...

The year model is critical as there are 3 generations of F25, and each one is completely different than the each of the others. Basically a 2000 F25 PT&T won't fit a 2018, and a 18+ PT&T won't fit a 98-06, etc. IF/when you do find the correct one, you will need your motor to be long shaft...

get a yamaha line. Swap the ends if needed. Last hose you will ever buy.

I own (currently) two yamaha 25hp motors. One is a 2018 EFI 4 stroke and the other a 2000 model 25hp 3 cylinder 2 stroke. I don't even use the 2 stroke anymore. I had it out once this year to blow the cobwebs out, but it came off as soon as I got home and the 4 stroke went back on. As far as...

Look at all the specs for all of the major motors. PT&T, weight, etc. Make your decision based on what you want/need.

More complex is subjective. Some of the two stroke engines are less complex--but the key word here is the engine. Remember there is more to an outboard than the engine. On some of the ETEC's (and others) they have high pressure direct injection; basically a crude version of what modern cars...

Most likely that's the vent for the carburetor. If I am right, it's likely that either the float valve is leaking, or the bowl gasket (or both) leaking. At that point, it's probably wise to rebuild the carb with a new float valve assembly and float chamber gasket. Does it run ok otherwise...

100 lbs is a big difference, depending on the hull put 2 more batteries in the back of your current rig and see how it sits. If you can get used to it, go for the 90. Or look at a different brand 90hp that is lighter. I know the Merc 90 is cheap and they are cheap-for many reasons. When it...