Search results

A buzzer is usually activated by either low oil pressure or quantity (four versus two stroke) over temperature or water in the fuel warning. Some early filter cups were known to have problematic sensors. The water in the fuel filter cup is peculiar in that it is only heard when the shift lever...

If it is a 2002 four stroke and that is engine oil, then it could be that the oil pump seal is worn or the seal has worn a groove into the crank shaft. The latter is a known issue for which Yamaha has implemented a cost effective repair. A stainless steel band (Speedi Sleeve) is pressed onto the...

The F250 most certainly does have a poppet/pressure control valve. It is item number 8 in the illustration above. You have to remove a plastic skirt at the rear of the motor (right below the engine pan/lower cowling) to gain access to it. Most Yam four strokes, the new SHO and Offshore series...

I was running an F200 with a Flo-Scan installed. That's how I know that it will work and how it works. I sold the motor and am deciding whether or not to repower with the new Yamaha offshore motor. I don't like the looks of them however.

What you read/heard about a Flo-scan not working correctly is completely false. It works in exactly the same manner as the Yamaha conventional fuel flow meter. A small turbine in the sender turns with the flow of fuel and sends a signal to the gauge which is displayed in gallons per hour. For US...

Check with Flo-scan and see if the total consumed is still accurate even if the needle on the gauge is pegged. If so, I would go with the 0-20 gauge. More fidelity. How many times and for how long will you be running at WOT anyway. Do you even care what the fuel burn is at WOT? Keep in mind...

If you disconnect the fuel line at the primer ball and pump from there you will simply be removing all fuel from upstream of that point. All of the other fuel will remain as is in the engine fuel filter, VST, fuel injector rails, etc. I completely pump my tank dry all the time and it has no...

It is a good thing that the motor you were running on is still in one piece. Four strokes have high compression ratios and are very susceptible to detonation. Trying to get a twin powered boat onto plane, or running it on plane if you can get it to, can be very harmful to the motor. You were...

For best performance and engine life the motor needs to be propped so that you are at or near 6000 RPM when at WOT with a full load and the motor trimmed to the most efficient spot. This is what the owner's manual and Yamaha themselves have to say.

How can the mechanic harm the motor? More than likely the valve lash just needs to be checked and not adjusted anyway. Are you implying that a Japanese production worker on an assembly line has more expertise than a marine mechanic? In the scheme of marine maintenance, changing valve shims is...

The newer F150's use a different filter cup. It screws directly into the fuel filter mount. There is no retainer ring used with the new configuration. The filter cup can swell with ethanol making it a b1tch to unscrew and to get back on. Also, the nylon threads are very fine and easy to cross...

Are you talking trimmed up or tilted up? A big difference. Yes, when tilted all the way up there is a lot of play in the motor. This is one of the reasons not to drive around with it tilted up with just the tilt lock in place. The motor jumping around will hammer on the lock and might bend it...

The cap should be installed. It has a jumper wire on it. Also, the lanyard is to keep the cap from being lost. The plug is the YDIS port (where your mechanic will connect his lap top computer to get engine information and to do diagnostic tests.

You want to run the motor at considerable power most of the time during the break in period. But, vary the RPM's, don't do it all at one RPM. You need to make power so that the rings seat to the cylinder walls. Run the motors as much as you can above 4000 RPM. Yamaha wants you to run the...

Wrong, wrong, wrong. Yes, some have done it like this and gotten away with it but... An F250 weighs close to 600 pounds. The lower unit was never designed to have this much of a load pass through it. Can't you imagine the round gear case being somewhat oval in shape while the motor is being...

It probably is not too late to get the F200. I have never heard of anyone wishing he had less power. If the F200 is too much power you won't notice it or the additional price you have to pay. If the F150 is not enough HP you will feel it every time you go boating. In my view, an F150 is not...

Oh, my brother has a 2110 (lighter boat than yours) and I offered to give him my F200. He has a 225 Ficht on the back now. He did not want it because it was less HP than what he has on there now.

It probably is not too late to get the F200. I have never heard of anyone wishing he had less power. If the F200 is too much power you won't notice it or the additional price you have to pay. If the F150 is not enough HP you will feel it every time you go boating. In my view, an F150 is not...

The tip on a standard grease gun fits the Yam zerk fitting.

The engine will go into RPM reduction mode and the horn will sound when the main (engine mounted) tank is low on oil. The remote tank can be full or empty. The main tank has a sensor with three switches in it. The top switch closes when the float rises to the top (full tank) to tell the oil...