The completion of the break-in period is not just a formality, but a critical stage in the life of your water transport. It is the first 10 hours of work that determine how long and reliably it will serve. boat-engine Many owners who have bought new equipment mistakenly believe that after the first tank is produced, you can immediately go on long-distance fishing or racing.
In fact, inside the powertrain, there are some very complex physical and chemical processes, and the piston rings are rubbed against the cylinder walls, and the microscopic gaps in the bearings and gears are brought into working order. transmission oil and lubrication crankcase accumulates the maximum amount of metal shavings and combustion products.
Ignoring routine work at this stage can lead to accelerated wear of parts and even jamming of the engine at full speed. maintenance Immediately after running is a prerequisite for maintaining the guarantee and confidence in the safety of the water.
Why you can’t ignore the first one.
The break-in period is necessary to ensure that all the rubbing surfaces of the parts take on the perfect shape for each other. In the process of this laundry, micron irregularities are inevitably removed from the surfaces of the metal. All this abrasive material remains in the oil, turning it into an aggressive medium that, if used further, will work like sandpaper.
In addition, in carburetor Or injection systems can get the factory fuel-delivery settings down because of vibrations and thermal expansions, and checking and adjusting these parameters ensures optimal fuel consumption and stable idling, and neglecting this step often leads to the formation of scorching on candles and pistons.
⚠️ Attention: Operating a used-oil engine for more than 20 hours dramatically reduces the life of the crank mechanism.
Modern. two-stroke Yamaha, Tohatsu or Mercury require special attention to the mixture of oil and gasoline. If during the break-in you used an increased dose of oil in gasoline (enriched mixture), then after the maintenance you need to return to standard proportions, otherwise the engine will “choke” and smoke. Four-stroke units In turn, they require a thorough check of the level and condition of oil in the crankcase, since it is there that the main filtering of wear products occurs.
Essential tools and supplies
You don't need a professional mechanic's garage to do a good job, but a basic toolkit is a must, and you need to prepare the keys for removing candles and draining oils. Most models will use a standard set of heads and cap keys, but some will. Japanese engines Specific sizes may be required.
It's important to buy the original consumables in advance, and using cheap oils can negate all the breaking in efforts. You'll need special ones. transmission oils with the appropriate viscosity and oil for the gearbox, as well as spark plugs recommended by the manufacturer.
- 🔧 A set of wrenches and heads (including candle wrench)
- 🛢️ Motor oil for four-stroke engines (or two-stroke for mixing)
- ⚙️ Transmission oil for the redctor (usually GL-5)
- 🕯️ Candles of sparking (original or qualitative analogues of NGK / Champion)
- 🧤 Gloves, rags and container for used oil
Don't forget to prepare a drain tank, and it's strictly forbidden to pour oil into water or land, and you should also have a lubricant for water-resistant bearings, for example. Lithium Complex Greasewhich will need to be treated with the syringe points.
Buy oil from trusted stores and check the integrity of the package. Fake lubricants are a common cause of engine failure in the first season.
Replacement of oil in the gearbox and crankcase
The most important operation of the first maintenance is the complete replacement of technical fluids, and you should always start with the gearbox, because it gets the most moisture and metal shavings in the first hours of operation, and the motor must be in a vertical position to ensure a complete drain of the workflow.
When you unscrew the bottom drain screw, let the oil flow freely into the prepared container. Pay attention to the color and consistency of the liquid: if it shows obvious metallic glitter ("silver"), this is a normal result of running. If the oil has an emulsion, milky hue, this indicates that water enters the glands, which requires immediate intervention of the service.
The sequence of oil change in the gearbox:1. Warm up the engine for 5 minutes on blanks.
2. Set the outboard motor vertically.
3. Unscrew the bottom drain screw.
4. Unscrew the top control screw.
5. Put the workout into a tank.
6. Pump new oil from below before appearing in the upper hole.
7. Twirl the top screw, then quickly the bottom one.
For four-stroke The oil change procedure in a crankcase is similar to a car: you need to heat up the engine, you need to unscrew the drain plug and replace the oil filter if it is designed, you fill the new oil strictly to the mark on the probe, and the overflow is as dangerous as the overflow, because it can lead to the extrusion of the glands or foaming of oil.
☑️ Checking the gearbox
Audit and replacement of spark plugs
The state of the spark plugs is an indicator of the health of your engine. After running on the electrodes, a characteristic soda can form, which must be removed, and ideally replaced with new candles to ensure a confident start in all conditions. The color of the soda can tell a lot about the operation of the engine.
If the electrodes have a brick-brown or grayish-brown hue, then fuel-mix It's right, and it burns efficiently, and black, dry soda indicates a rich mixture (a lot of oil or gasoline), and white plaque or electrode melting indicates overheating and poor mixing.
| The color of nagara | Reason. | Action. |
|---|---|---|
| Bricky/Brown | Normal work. | No replacement is required, you can clean it. |
| Black velvety | Rich mix, little air. | Check the air filter and carburetor settings |
| White/Melted | Poor mix, overheating | Urgently check fuel supply and cooling |
| Oily black | Getting oil into the chamber | Check the piston rings and oil caps |
When installing new candles, it is important to observe the puffing moment. Excessive force can damage the thread in the cylinder head, and a weak puff will lead to a violation of the heat sink and potassium ignition. two-stroke It is recommended to use candles with a potassium number strictly in accordance with the recommendations of the manufacturer.
Lubrication of knots and check of cooling system
The aqueous environment is aggressive, and even new seals require attention, and after running, you need to completely lubricate all the components that are designed, usually syringes on the lower unit, the tiller and the jointing points of the gear levers.
Use only water-resistant lithium lubricant. Ordinary solidol or graphite lubricant will quickly wash out with water, leaving the nodes unprotected. Pay special attention to sealing the paddle shaft: if the lubricant protrudes from under the omentum is a good sign, then water does not penetrate.
⚠️ Note: When lubricating lower unit, do not apply excessive amounts of lubrication to the propeller itself, as it will be scattered by centrifugal force and pollute the water.
The cooling system also requires inspection. Remove the pump cover and inspect the impeller. Although the pump life is large, after running, you should make sure that the rubber blades do not have cracks and deformities. The control holes for the launching should freely let the jet through. If the jet is weak, perhaps there are air traffic jams in the system or clogged channels.
How do you prolong the life of a pomp?
Never start a motor without submerged lower unit or water. Dry work destroys the rubber impeller in a few seconds, causing the engine to overheat instantly.
Setting up the carburetor and fuel system
Vibrations that occur during the break-in process can weaken the carburetor's adjusting screws. carburetor This means that you need to check the quality of the mixture at idling and when the throttle is sharply opened, and the engine must keep steady speed and not stall when the gas is discharged.
If the motor starts to sneeze or stop with a sharp addition of gas, you may need (fine adjustment) of the screws quality and quantity of the mixture. However, if you do not have experience, it is better to entrust this procedure to a specialist, since improper setting will either overheat or lead to increased fuel consumption.
In injector (EFI) is set electronically through the diagnostic connector. Mechanical adjustment is almost unnecessary, but it is the responsibility of each owner to check the tightness of fuel hoses and connections after breaking in vibrations. The fuel filter-sludge tank should also be removed and washed from possible debris.
Stable work at idle speeds and the absence of failures during acceleration are the main signs of a properly configured fuel system after running.
Frequently Asked Questions (FAQ)
Can synthetic oil be used immediately after running?
Yes, modern synthetic oils (such as Yamalube 4W Synthetic or Mercury Quicksilver) are great for after-run motors, providing better protection at high temperatures and less soot, but switching to synthetics is best after the first replacement, when the basic metal shavings have been removed.
Do I need to change the fuel filter after the test?
If you have refueled at the tested gas stations, then the regular filter-sludge is easy enough to wash. Replacement of the fine cleaning cartridge (if you have one in your model) is recommended after 50-100 hours, but visual inspection after running in will not hurt.
How much is the first service of the outboard motor in the service?
The cost varies depending on the region and engine power. On average, the official maintenance after running in an authorized center will cost from 3000 to 8000 rubles, excluding the cost of consumables (oils, filters, candles).
What to do if an emulsion appears in the gearbox oil?
The presence of an emulsion indicates water intake. We need to replace the lower unit transmission coils. You can't operate a motor with water in a gearbox, which will corrosion the gears and bearings in one season.