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The extreme case would be where a rouge wave actually flips the houseboat (square box) on it's side and with that in mind it just feels uncomfortable to imagine the bottom all in one flat line. No doubt this has been looked at by builders I just wonder what they came up with. I think all single...

My lifelong dream has been to build a houseboat, now that am am ready to build I need to finalize my plan. The boat will be small for a house boat, 10' X 30' because I am limited to 10' wide in my canal in the Florida Keys where I will moor it. I want the boat to be stable and seaworthy for near...

Can someone tell me where the heck is this supposed to be used? My best guess is that they are supposed to be cut apart and used in two places. I can see using the small O ring on the lower bowl fuel drain brass plug but the big one won't fit anywhere. Too small for either the air intake side or...

My boat has a temp. gauge but it is not hooked up to my 2003 90HP Yamaha (2 stroke). I want to get it working but not sure how. I found what looks like a a sensor in the stern of the boat with 1 wire attached but the other end of the wire was a dead end under the console (see picture) Looking at...

The motor is a Yamaha, 90HP year 2003 (I think) When I first got it several months ago it would do about 30mph at close to 5000 RPM as setup. Recently I have lost top end power. It still runs very smooth at idle and under power, it just does not get above 3500 RPM's and about 23 mph anymore. I...

I have a boat with a built in live well that no longer has any hoses or parts except the tank itself with one hole on the bottom and one hole on the side near the top. I want to make it work again but with two goals. 1. I want to be able to pump the live well dry using the same pump that...

Yup, almost went to the bottom of the canal from a bilge pump malfunction, here's what happened... The boat is a 1997 Catamaran by Nautico/Seagull. Inside both hulls are bilge pumps with automatic switches. When one turns on the other does too. They are accessed by two round ports near the...

Nothing earth shattering new here, just my version. My nav lights on the sides of my center console would not work so keeping the fixture, I pulled the lamp base guts and inserted my homemade LED. 4 super bright white LED's from radio shack, about $5 stuck through about a 1" X 1-1/2" piece of...

I just got a boat with a Yamaha 90HP 2 stroke and am checking things out before I use it. The first thing I want to check is the oil injection and the warning indicator specifically. I've done a good bit of reading on the system and understand it is considered very reliable so we've got that out...

I'm looking at buying a boat with a 2004 90hp Yamaha TLRC. When I checked out the boat my Compression tester showed 90# top cylinder, 90# middle and 60# on the bottom. I assumed the motor had issues and left. Next I looked at another boat, again a 90HP Yamaha and again off on compression...

'87 Johnson - Spark Adjustment - J30ELCUB Hello, while out the other day I began to lose the upper end of my throttle control. Looking at the motor, I found the spark adjust screw had vibrated it's way in to a point it was restricting advancement of the throttle. I moved it back out and the...

I found this thingy lurking in the lower engine cover wedged under the motor while cleaning. Surely this is the part that if I know where it goes then reinstalling it will make my motor run like new, increase gas mileage and make my investments skyrocket! If I only knew what it was...

I like to replace the fuel lines on my motor every few years and in doing so have a question if the lines run as they are, are correct or if it matters. From the output side of the fuel pump there is a 3/16 line that runs aft of the motor to the port side where it goes to a T. One leg of the T...

I had problems with my boat that was classic "motor too low" There was spray coming up and over the transom. Measuring I found my ventilation plate was about 2 1/4 inches below the keel. So, I redid the transom and raised the motor. The ventilation plate is still sometimes about 1/4" below the...

I want to hook up a tach to my 1987 Johnson 30HP. I don't want to mess with another disposable solid state tach and don't want to spend a lot. I'm looking at this on ebay, http://www.ebay.com/itm/281703748236?item=281703748236&viewitem=&vxp=mtr It says it works with most 4 cylinders but mine...

I need new cables for my old OMC style control (I like it and don't want to change it) however I'm unsure what length cables to get. I've attached a picture showing the route the old cables take which I think may be longer than needed. The existing cables are 6'. I suppose there must be some...

On my Tohatsu M55B is the flywheel nut reverse thread?

I need to replace check valve and cap for the lubrication recirculation on my 55HP Tohatsu (1985) The parts diagram shows only the cap and check valve but when looking up the part # it gives new numbers and notes that 2 additional parts are needed - gaskets. Since the parts diagram does not show...

pvanv, while I have your attention, On the Strbd side of the motor is a little thing with rubber hose connected to it. If I read the parts diagram correctly it is a check valve. When I run the motor it spurts out bursts of air and fuel out a hole on the face. What can you tell me about this thing?

Thank you pvanv, your post came literally mid swing with the sledge. My unit looks different from the manual. Here's a picture of the unit from the side that faces the transom. I loosened this bolt all the way out and it was a needle valve. And here's a view standing starboard looking port I...