Starting water equipment is not just a mechanical action, but a whole ritual, on which the safety of the crew and the resource of the engine depend. The Right Algorithm of Action When you start, you avoid breakdowns at the most inopportune moment and you extend the life of the power plant by hundreds of hours, and many beginners make the mistake of thinking that it's enough to pull the starter, but in fact the process requires preparation of the fuel system and checking the cooling systems.
In this article, we will discuss in detail all the nuances of the launch two-stroke and four-stroke You'll learn why it's important to lift the motor out of the water on your first start and how ambient temperature affects the number of thrusts you make, and following these rules ensures that your day on the water starts with a confident roar, not with convulsive attempts to revive the iron horse.
Preliminary preparation and verification of systems
Before pulling the start cord, you need to make sure that all systems are ready to go. Fuel mixture It should be fresh and properly mixed, especially for two-stroke models, where the proportion of oil and gasoline is critical. Yamaha or TohatsuMake sure that the tank does not contain water or condensate that could have gotten there during storage.
The second most important step is verification cooling-systemNever run the engine dry, even for a few seconds, unless it's a short-term out-of-water check with a water supply system connected. The water intake should be free of algae, sand or debris. Also inspect lower unit for cracks that can disrupt coolant circulation.
☑️ Pre-launch check
Don't forget. spark-plateIf the engine has been idle for a long time, unscrew the candle and examine its electrode. Having black soda or oily film indicates problems with the carburetor or the quality of the mixture. A dry and light brown candle is a sign of serviceability. Before installing it, blow back the candle hole with compressed air to remove the residue of fuel.
Algorithm for starting a cold engine
Launch cold-engine It requires enrichment of the fuel-air mixture, and most models have a special suction lever (Choke). CLOSE or STARTIf you have a modern injection motor, the electronics will enrich the mixture, and there may be no mechanical control, in which case just turn the ignition key.
The next step is installation throttleThe lever of gas must be placed in a position just above the idle, often referred to as START Or just an arrow up from the minimum, and that's enough air to ignite the rich mixture, so if you hold the handle with one hand, pull the trigger cord sharply and hard with the other, don't pull slowly, it won't spark the right amount, and it can fill the candle.
After the engine grabs and starts working, immediately return the suction lever to the position. OPEN or RUNIf you leave the pump on, the engine will run intermittently, "choking" and quickly stall. Let the engine warm up at idle speed for 2-3 minutes before adding gas. four-strokewhere the oil should be dispersed to all nodes.
What if the engine sneezes when starting?
If you start the engine with a characteristic sneezing sound and you throw out a cloud of unburned fuel, you've oversucked the suction, and then you've got to move the suction lever to the OPEN position, twist the candle, dry it, and blow the cylinder with a few jerks of the starter when you turn off the ignition, and then repeat the suction procedure without the suction after assembly.
In the cold, the number of jerks of the starter can increase, and the warming up time can increase. Use winter oils with the appropriate viscosity to facilitate the turning of the crankshaft.
Features of starting a hot engine
The situation when you need to start already warmed up engine is radically different from a cold start. sucker A hot engine requires a poorer mix, and enrichment will lead to "overflow" and inability to start. The throttle lever is also usually left in the minimum rpm position, although some older models may require a light opening of the valve.
A common problem is a so-called "hot start" after a short stop, for example, for swimming or fishing. Mercury or Honda Don't start from the first thrust, don't try to pull the cord indefinitely. pause, blow out the open-throttle cylinder (without spark) and try again. Often the cause lies in a steam stopper in the fuel system due to the heating of the tank in the sun.
If the engine stops immediately after starting in a hot state, check slam-valve In electrical valve control systems, this valve must open when the ignition is turned on. If it is stuck, the fuel mixture continues to flow after it is turned off, causing problems at the next start.
Starting of the motor with electric starter
Owners of powerful outboard motors often use electric starterBut there are some nuances to this, too: Before you turn the key, make sure the battery is fully charged and the terminals are securely secured, and a weak battery charge can cause slow scrolling, which will prevent you from developing the necessary rpm to start confidently.
The procedure is similar to manual start: turn on the ignition, check the position of the sucker (for cold engine) and throttle, then turn the key. Do not hold the starter button or key for longer than 5-7 seconds. If the engine does not start, take a break for a minute to cool the starter and recover the battery charge. Prolonged work of the starter under load can lead to its overheating and failure.
| Parameter | Cold engine | Hot engine. | Electrical starter |
|---|---|---|---|
| Suction (Choke) | Included (CLOSE) | Off (OPEN) | Automatic/Manual |
| Throttle (Gas) | START position | Idle move | START position |
| Warm-up time | 2-5 minutes | 30-60 seconds. | Depends on the temperature. |
| The risk of overflow | Medium. | Highly | Low. |
It is worth noting that in many modern models with electronically controlled The computer itself determines the engine temperature and adjusts the fuel supply, in which case the operator is required to turn the key and control the instrument.
Emergency launch and troubleshooting
What if the starter breaks or the battery dies? Most motors have the option of emergency start, you need to remove the plastic casing and find special holes or studs on the flywheel, using a special key from the remix (or a matched head), you can manually turn the crankshaft. This requires physical strength, but allows you to get to the shore.
⚠️ Attention: When emergency start, make sure the propeller is raised above the water or the boat is securely secured. A sudden start of the engine can cause injury or damage to property.
If the engine does not start at all, check the presence of the engine. sparkTwisted the candle, threaded it against the metal part of the engine (mass) and pulled the starter. The bright blue spark indicates a proper ignition system. If there is no spark, check the kill switch, often the problem is the poor contact of the emergency check.
If the candle is wet and the gasoline doesn't evaporate, there's probably too much fuel in the cylinder. Try starting the engine with the throttle fully open and the ignition switched off to blow the cylinder, then re-start.
Another common cause is water entering the fuel filter-sludge tank, unscrew the bottom of the filter glass (if the design permits) and drain the water, and even a small amount of moisture can disrupt the carburetor and make it impossible to start.
The first break-in and the first start of the new engine
The first launch of the new outboard motor is the beginning of the stage break-inFor two-stroke engines, it is important to observe the proportion of oil in the first hours of operation, often manufacturers recommend even increasing its content slightly. Four-stroke engines require careful monitoring of oil levels and the absence of extraneous noise.
During the first run, carefully monitor the jet of water coming out of the control hole. The absence of a jet even for a short time can lead to overheating and bullying of the piston group. If there is no water, turn off the engine immediately and check the pump and water intake.
The first 10 hours of work is a critical period of work-in-work, avoid long hours of constant work and sharp openings of the throttle.
After the initial start, be sure to extend the fasteners, as the vibration of the new engine can weaken the connections. Check the puff of the lower unit and the mounting of the motor to the transom. Regular inspection in the first hours of operation will help to identify factory defects or assembly errors.
Can I start a outboard motor without water?
It is strongly recommended not to run the motor without water on the pump blades for longer than 10-15 seconds (only to check the spark). Working "dry" leads to instant overheating of pump and impeller seals, which can cause jamming or destruction of the knot. Use a special barrel or connect a hose with tap water.
Why does the engine start and immediately stop?
Most often, the cause is clogging of the idle gliders of the carburetor or malfunctioning of the anti-slam system. It is also worth checking whether the engine sucks air through the intake manifold gasket. In two-stroke motors, this may be due to improper adjustment of the screw quality of the mixture.
How often should I change the spark plug?
The life of a candle depends on the quality of fuel and oil. On average, for two-stroke engines, the candle is changed once a season or every 100 hours. For four-strokes, the interval can be longer - up to 300 hours. However, visual inspection and cleaning are recommended every 20-30 hours.
Do I need to drain fuel for the winter?
Yes, it's critical. Modern ethanol gasoline is hygroscopic and absorbs moisture, which leads to the dissection of the mixture and corrosion of the carburetor, either drain the fuel completely, or use special stabilizers and fill the tank to minimize contact with air.