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The F25 had gotten much better and only made oil if I did a lot of idling, which I understand is a common problem for most all four strokes. I traded mainly because I wanted a little more speed and liked the tilt/trim feature of Tohatsu. With only 10 hours on the Tohatsu I can smell gas in the...

I raised the motor as high as I could and can only get flush with the bottom of the boat. I called T-H Marine who make the CMC break away mount to see what suggestions they might have. They recommended that I replace the break away mount with the two piece jack plate and raise the motor as much...

The F25C was on the same hull and it's top speed was around 27.5. So for with the MFS30 the top speed is around 31.5 but I believe there is more left in the 30 by raising the motor height and maybe going up a pitch with the prop. I added a kick up plate when I changed over to the MFS30 which...

If you are looking to save weight go with the new Yamaha F25. It's a two cylinder but comparable in performance to the older two stroke Yamaha 25 two cylinder. I have recently changed over to a Tohatsu 30 hp three cylinder and really like the performance. It is a little heavier than the new...

I am running a 30 hp Tohatsu on a 1648 jon boat with a CMC kick up plate, which puts the motor about 5" off the back of the transom. Normally I would run the motor with the cavitation plate about 1" below the hull but with the 5" offset shouldn't I raise the cavitation plate so it is at least...

Thanks for all of the excellent information.

I have been battling this problem since the engine was new and now have over 80 hours on it. Just when I think the problem is gone it comes back. I was hoping that leaving the tank and hose connected to the engine when it’s not running was the culprit. I thought I did a good job of breaking it...

Is it possible for an engine to make oil because the fuel line is still connected between engine and tank, when engine is not in use? A mechanic advised me to disconnect the fuel line from the engine when not in use especially on warm days. He explained that the tank swells and forces gas into...

Are you sure there is a restrictor plate for the 20? I watched the mechanic remove mine and I don't remember him putting one back in. That doesn't mean there isn't one for the 20 and if it does require a plate I need to see about getting one.

I converted my 9.9 EFI to a 20 with a new module and removing the restrictor plate. I also had to buy a different prop because I was turning to many RPMS. The 9.9, 15 and 20 come with different props from the factory so running a stock 9.9 prop on a 20 would not be recommended unless you have a...

After a quick review of the Yamaha Service manual for timing adjustment there appears to be two methods for adjustment. One method is by setting the timing plate and control linkage. The other method is by using a timing light with a test prop. I don't have a test prop to work with so is the...

I was able to download the Yamaha service manual on my laptop last night, my iPad would only display a few pages of the pdf. It appears to have the information I was looking for. Thanks for the advice and directing me away from the SELOC manual.

Thanks for the information and yes mine is a C90TRLX. I will try and download the manual when I get home this evening on my iPad.

I am looking for a recommendation on an engine maintenance/repair manual that will cover a 1999 Yamaha C90 2 stroke. A few years ago I had to replace the CDI pack and since then the engine has been difficult to start and will stall when I put it in gear while at idle speed. The local mechanic...

I paid $3,428.95 out the door for my 2019 F25C in March of 2019. There was a $300 rebate and a extra 2 year warranty promotion at the time. Price included the rebate. Boater's World Albany, GA. If you choose to go with the Tohatsu 20 buy a 9.9 remove the restrictor plate and get the 20 module...

That is an interesting thought but I don't think that the performance would be good enough for me. Right now I can only get 35 mph out of the 90.

What options are there besides another Yamaha 90 to re-power my 1806 Pathfinder? I had this same boat previously with a Yamaha C115 and the weight was too much for the boat for my liking. The problem with the 115 is the scuppers were below the water line and water was constantly around your feet...

"I assume the Yamaha is a long shaft and the Tohatsu is a short but if they are both the same shaft length have you ever swapped them out to see how each performs on the opposite hull?" You are correct the Yamaha is a long shaft and the Tohatsu is a short shaft. Also the 1442 is a much lighter...

I have a Yamaha 2019 F25C on the back of a 1648 War Eagle. Depending on the load it pushes it around 27-28 mph with factory 11-1/4 pitch prop. The motor is turning around 5800 - 5900 rpms. I also have a 2019 Tohatsu 20 EFI on the back of a Alumacraft 1442. It will pushes it around 28-29 with...

Still fishing at 80 is awesome! Congratulations to your father for still having the drive and ability to get out on the water. I had a Weld Craft 1544 with a 25 Yamaha 2 stroke, that was a great setup and one I should have never sold. I think Weld Craft is one of the better made jon boats out...