How do I test my Mercruiser trim pump?

To test the motor itself, bypassing the relays and relay wiring, find the two heavy gauge wires that lead to the trim/tilt pump motor. One should be green and the other blue. You will probably be able to find a quick disconnect plug near where the wires exit the outboard engine cover that you can disconnect.

To test the motor itself, bypassing the relays and relay wiring, find the two heavy gauge wires that lead to the trim/tilt pump motor. One should be green and the other blue. You will probably be able to find a quick disconnect plug near where the wires exit the outboard engine cover that you can disconnect.

Similarly, why is my tilt and trim not working? If the motor operates, then the problem is a lack of power to the motor (faulty solenoid or relay, bad connections, etc.). Failed solenoids, relays and corrosion (at connections, relay sockets, quick-disconnect plugs, etc.) are some of the most common problems associated with tilt and trim system failure.

Also Know, how do you fill a Mercruiser trim pump?

Turn the fill screw on the top-right side of the trim pump tank counterclockwise with a flathead screwdriver. Pour hydraulic fluid into the tank until the level reaches the “Full” line. Replace the fill screw. Disconnect the leftmost (Up) line from the trim cylinder with an adjustable wrench.

Why won’t my boat motor trim up?

Hydraulic fluid doesn’t evaporate, so if you can hear the trim motor running but your outboard won’t tilt up, you likely have a leak. Then trim the motor up and down, try to add a little more fluid and trim it up and down again.

How do you troubleshoot a trim gauge on a boat?

The Trim Gauge can be tested by: Disconnect the 4-wire harness connection. Power the gauge by connecting 12 vdc positive to the gray wire and a good ground to the black wire with gray stripe. Have no other wires connected to the gauge. The pointer will slowly move towards the “Up” end of the scale.

Should I leave my outboard motor up or down?

Should I leave my engine up or down? Simply put, if you are leaving the boat in the water, leave it in the up position to avoid growth. If you are leaving it out of the water, trim it down to drain the water and protect the Power Tilt and Trim seals from the sun.

How do you manually trim an inboard motor?

How to Manually Raise an Inboard Outboard Motor Turn the engine off. Reach to the back of the engine housing to the back transom — the very back edge of the boat. Stand at the back of the boat and have an assistant stand to the other side. Push the lock pins you unscrewed from the motor through the trim settings in the cowling area.

What is the difference between tilt and trim?

The difference between tilt and trim on a boat is referencing the location of the outboard or the drive of the inboard. Trimming is used when underway and goes about 20 degrees of the way up and tilting is coming all the way up for storage.

How Trim works on a boat?

Trim refers to the angle of the propeller shaft relative to the boat. When the boat is stationary and the shaft is parallel with the surface of the water, that’s known as neutral trim. The prop shaft’s angle is important because it directs the power from the engine.

How do you test a boat starter?

How to Tell if a Starter is Bad on your Marine Engine Step 1: Turn the dial of a digital multimeter to the DC voltage setting. Step 2: Set the multimeter to the DC voltage setting. Step 3: Turn the ignition switch to the “Start” position. Step 4: If the reading on the digital multimeter is greater than 9.5 volts, attempt to start the motor.

How do you bleed a Mercury trim?

Use the power trim control switch to raise your motor. Engage the tilt support lock. Remove the fill cap for the power trim reservoir an ensure that the fluid level reaches the bottom of the fill hole. If it does not, add power trim and steering fluid until it does so.