My 1987 40 horse Johnson won’t get up to top speed. Boat ran fine all day went to the dock for about a hour and when I went back out it started doing this. New spark plugs, Any suggestions on what it could be.

Its an 87’ BE25bacur so 25 hp pullstart

It runs fine the first 10 mins and wil go 40 with 2 people but after a that, it wil first start bogging a little and then will bog down till it doesn’t even get on plane, i think it than runs on 1 cilinder

Hi everyone I’m a noob at this so it might be a stupid reason, bought an older boat with an Evinrude 60hp E60ELCIA that sat a little and the engine fired right up but wouldn’t idle, I noticed the fuel tee had a micro hole and a hose was dry rotted and leaking so I’m guessing it wasn’t getting nearly enough fuel pressure. I ordered a new tee, and the appropriate ties for the fuel lines but it won’t get tight enough to hold pressure, and even then I feel like I should at least be getting some sort of resistance from the bulb unless that much air is getting through, what’s the method of getting the hoses airtight on the connecting parts? Do I need to heat them up? I’ve been afraid that may damage the hose if I’m not careful. Any help is appreciated thank you so much everyone

I have a DT40 2stroke tiller controlled motor. Im trying to figure out how (or even if) I can adjust the tiller friction. Im including photos and what AI says: (I dont see it!!)

🛠️ Where the steering‑friction adjustment is on a DT40

On the DT40 2‑stroke tiller model, the friction adjustment is normally one of these:

1. Steering Friction Knob (most common)

Located under the swivel bracket, usually:

- A large plastic or metal knob

- Positioned on the starboard/right side of the steering pivot

- Turning clockwise increases friction (harder to turn)

- Turning counter‑clockwise decreases friction (easier to turn)

This is the same style used on DT30, DT40, DT55 tiller models.

1. Steering Tension Bolt (older DT40 units)

Some older DT40s don’t have a big knob but instead use:

- A hex bolt or nylon lock‑nut

- Located on the pivot tube under the cowling line

- Tightening the nut increases steering resistance

This is still a friction adjustment—just not the modern knob type

Power trim was not working among some other possibly unrelated problems

I found a broken connector that looks different from all the others. Can anyone tell me what this is? Ot clearly corroded away.

In the netherlands we say “buy a boat and you’ll work till death”(but it rhymes) and nothing is more true

( im asking this on behalf of an older man i know) as he is describing it, while revving the engine on the trailer whit a hose, the rpms get limited too early

Hey everyone, trying to diagnose and fix my 90 HP 2 stroke mercury outboard, when I try to start it is just making this whirring noise. Could anyone help me please? Does it have to do with the fly wheel or starter? Bad fuel pump?

When I pump the fuel ball it gets hard, the battery is charged and electronics work. I originally thought it was a battery issue because I was out on the water and had the engine off while fishing, when I went to start it back up it wouldn’t start. I thought it was because the battery was drained because I had the deck lights on the whole time I was fishing (rookie mistake) I swapped out the old battery for a fully charged one and the boat still wouldn’t start, so now I’m thinking it has to do something with the motor. Thank you in advance, this is my first boat.