Do you have to break in a new lower unit?

If it was a powerhead you would be worried about seating rings and other high tolerance items, but a lower units is pretty simple and does not require the break in of a new motor.

How do you break in a new outdrive?

Do not exceed 75% throttle for the first 5 hours. Shift into forward and reverse a minimum of 10 times in the first 5 hours. For hours 5-10 you should do short runs at full throttle. After 10 hours normal operation can resume.

How do you break in a new Yamaha lower unit?

Yamaha does not have a break in procedure for new lower units. Personally, I would limit hard use for 10-15 hours, but other than that, run it normally. Change or check the oil around 20. Yes they do come filled from Yamaha with gear lube, but they typically are a little low on the level.

How much does it cost to replace lower unit?

A typical set of parts for the gearcase can cost $500-600 and may go higher if the gearcase is severely damaged. If you have your local mechanic repair the lower unit, his labor will run about $300-400 for this type of repair.

How do you know when your lower unit goes out?

Bad outboard lower units can give the operator shifting issues, and other signs will include water in the gear lube, metallic particles on the drain screw magnet, clunking sounds when shifted, or the loss of the ability to shift into gears.

What is a lower unit?

The lower unit (or gearcase) is the part of the outboard that takes the power and rotation from the engine and transfers them to the prop shaft and the propeller.

How do you break-in a new Yamaha engine?

The first 10 hours of operation should be run using the following running pattern:

1. First hour – run the motor at varying speeds up to 2000 rpm. ...
2. Second hour – accelerate hard enough to put the boat on plane. ...
3. Next 8 hours – run the motor at all speeds but avoid continuous.

How do you break-in a Yamaha engine?

After the first hour you bring the speed up and keep the boat under 3,000 RPMs. This speed will be just about on plane, and you DO NOT want to be full throttle. For the next 8 hours of run time run the boat at varying speeds and avoid running the boat at wide open throttle for more than 5 minutes.

How do you break in a Mercruiser?

First 20 Hours:

1. DO NOT operate the engine below 1500 rpm for extended period$ pf time. ...
2. DO NOT operate at one continuous speed for extended periods of time. ...
3. DO NOT exceed 3/4 throttle during the first 10 hours of operation. ...
4. DO NOT operate at full throttle until the engine reaches normal operating temperatures.

What happens if you don't break-in outboard?

Failure to follow the “break in procedure” for an outboard motor can result in mechanical failures, reduced life of the outboard and even a voided warranty!

Do you have to break-in a Waverunner?

How Long Do You Break It In? The first 5 hours of your new Seadoo Watercraft is the most critical. All the other hours are not as important as those first 5 hours. Your break in period is within the first 5 hours.

Do you need to break-in a new Yamaha outboard?

All current Yamaha four-stroke motors require a period of 10 hours break-in. The procedures are explained in the Owner's Manual and are repeated in this bulletin. The boat must be operated under load, which means in the water (lake river, ocean, etc.), with a prop installed and unrestrained.

How many hours does it take to break-in a new boat motor?

The rule of thumb for most marine engines are 10 hours for the break-in period. Some inboards require more, like a 20-hour break in, but I think this could go back to the debate of the “break-in period myth.” So we will leave that there with what the manufacturers want, and say.

How do you break-in a motorcycle engine?

For the first 500 to 1,000 miles, avoid using more than ¾ throttle. Always avert high engine speeds. Do not make hard stops, aggressive starts, or rapid acceleration unless there is an emergency. While breaking in your motorcycle, increase your bike's engine speed to the rev limit for short time periods.

How do you break-in a brand new boat motor?

Always warm up the motor thoroughly at idle before running at higher engine speeds. For the next eight hours you can run the motor in standard fashion but never for longer than five minutes at wide-open throttle.

Why am I getting water in my lower unit?

You have seals on both sides of your water pump. You can have a warped lower unit which will allow water to seep in; even with new seals. You can have a touch or roughness on a seal seat that doesn't let a seal seal. Take the lower unit to a "good" dealer and have them go through your lower unit.

How often should you change lower unit oil?

Most sterndrive and outboard manufacturers advise you to change the gearcase oil in your lower unit every 100 hours or once a year (whichever comes first). Clean oil is critical for protecting the heavily loaded gears in your lower unit and preventing expensive damage.

Why do you fill a lower unit from the bottom?

Yep, if there isn't oil in the LU, then there is air. oil is very thick and the air can't pass through it fast enough. You will fill the LU until oil comes out and you will think it is "filled" when in fact, it won't be. Filling from the bottom pushes the air out, unobstructed, hence a full LU.

Are outboard motors easy to work on?

But they are much easier to work on: A good boatyard can do a total outboard engine swap in a couple of hours, where the job for a diesel is measured in days. The outboard's tilt mechanism also means that when it hits an underwater object, it can often kick up before significant damage occurs.

How do you break-in a 2 stroke outboard motor?

Two-Stroke Premix Outboards

Pre-mix engines that normally run on a 50:1 ratio will need a break-in oil ratio of 25:1 during the first 10 hours of operation. Engines that normally run at 100:1 should be run at 50:1 during break-in. After the 10-hour break-in period, use the regular oil ratio.

How do you keep jet skis out of water?

Storage Tips for Preventing PWC Water Damage

Drain all water from the hull and engine. Fill the gas tank and add a fuel stabilizer. If applicable, consider putting antifreeze in your PWC. Do not forget to unplug and remove the battery.