Outboard Motors of the series salute deservedly considered "workhorses" of the domestic boating market, but even such reliable equipment requires periodic attention to the fuel supply system. carburetor The engine is the heart of a two-stroke engine, which is directly dependent on the accuracy of the propeller power, the efficiency of the mixture and the stability of the start. Owners often face the need to adjust or clean this unit, especially after prolonged downtime or use of poor-quality gasoline and oil.
The main difficulty in maintenance is that many models of these engines are equipped with carburetors type. K-36 Incorrectly tuned, not only can lead to loss of traction, but also serious damage to the piston group due to overheating or hydraulic shock, so understanding the principles of operation and the sequence of operations during maintenance is a critical skill for every hydraulic motorist.
In this article, we will discuss in detail the fuel system, fault detection algorithms and the method of fine-tuning the idling speeds. You will learn how to distinguish between clogging of jelly jelly from air suction and what nuances should be considered when operating the engine in different climatic conditions. Proper maintenance will allow you to extend the life of the engine and enjoy fishing without unexpected stops on the water.
The device and principle of operation of the carburetor
Structurally carburetor of the engine salute It's a float-type device with a constant dilution in the diffuser, and its main task is to prepare a combustible mixture of gasoline and air vapors in a strictly defined proportion before being fed into a crank chamber. float-chamberThe fuel level must always remain stable regardless of the position of the boat or the flow rate of the mixture.
The mixing process is driven by pressure differences: as the piston moves upwards, a vacuum is created in the crankcase, which sucks air through the inlet tube. As it passes through the narrowing (diffuser), the airflow accelerates, creating a low pressure zone, which causes the fuel to rise up the sprayer from the float chamber. jelly and the tightness of all compounds.
The system consists of several main subsystems, each of which performs its function in different modes of operation of the engine. At low speeds, the idling system operates, and when the throttle is fully opened, the main metering system enters into action, an understanding of this logic is necessary for proper diagnosis.
- 🔹 Float mechanism with a needle, regulating the level of fuel in the chamber.
- 🔹 Idle system with its own channel and quality control screw.
- 🔹 The main dosing system with the main jeeler and a throttle needle.
- 🔹 Enricher (suction) necessary to start a cold engine.
⚠️ Attention: When disassembling the carburetor, it is strictly not recommended to use a metal tool to clean the channels of the jellyclera, as this can change their throughput and disrupt the composition of the mixture.
Special attention should be paid to the material of the manufacture of parts. In older models, parts from alloys that are prone to corrosion could be used, whereas modern remixes are often made of more durable materials. carburetor requires clean fuel, as the smallest particles of rust from the tank can disable the entire unit in a matter of minutes of operation.
Typical malfunctions and their symptoms
Diagnosing fuel supply problems often begins with an analysis of the engine's under-load behavior. salute If the throttle is suddenly opened or it is not idling, the reason is often a misbalance of the mixture, it can be either an excess of air (poor mixture) or an excess of fuel (rich mixture), and the symptoms of these conditions can be similar to that of an inexperienced operator.
One of the most common problems is that the jellywoods are clogged with resinous deposits that are formed during long-term storage of the engine with fuel in the system, and there is also a frequent loss of sealing of the gaskets, which leads to "suction" of excess air. gear-screw cease to respond to rotation, and stable operation of the engine is impossible to achieve.
Another common cause of unstable work is wear and tear of the shut-off valve needle or the appearance of a needle saddle, which leads to overflow of the float chamber and, as a result, to enrich the mixture and throw the candle. Visual examination of the candle can give an accurate answer: black velvety plaque will indicate a rich mixture, and light gray or white color will indicate a poor one.
- 🔸 The engine stalls immediately after start-up - the idling channel is clogged.
- 🔸 The motor “sneezes” into the carburetor – too poor mixture or air sucking.
- 🔸 Black smoke and soak on a candle is a fuel overflow or an incorrect proportion of oil.
- 🔸 Lack of response to the quality screw - a complete blockage of the system or a needle malfunction.
It is also important to check the condition of fuel hoses and pears. Cracks on the hoses, unobtrusive to the eye, can create a significant air suction, which the carburetor is unable to compensate, so before deep dismantling of the unit, you need to make sure that the entire highway from the tank to the flange of the engine is intact.
Dismantling and complete disassembly of the node
To perform quality maintenance, the carburetor must be removed from the engine, a process that requires care, as it is easy to damage the gaskets or lose small parts. Before starting work, be sure to close the fuel crane and generate fuel residue from the mainline to avoid a fire situation.
First, you detach the gas cable and the throttle thrust. Then you loosen the clamps of the carburetor attachment to the engine pipe. When you remove, be prepared to leak the remaining gasoline from the float chamber, so you recommend putting the rags in. After dismantling, the knot is transferred to a clean desktop with good lighting.
The carburetor itself is disassembled in sequence, the float chamber attachment screw is turned first, the float axis is carefully removed, the main and idle jelly jelly jelly jelly jelly wool are twisted, and all the parts are arranged in the order of their removal, so that there is no confusion during assembly.
☑️ Checklist before disassembly
When removing the throttle with a needle, be extremely careful: the needle has a thin profile and easily bends. If the needle is deformed, it must be replaced, since it is almost impossible to restore the geometry without loss of functionality, and the condition of the throttle spring is checked - it should not be stretched or have signs of corrosion.
⚠️ Attention: Do not lose a small ball or damper, which may be under the screw of the mounting of the float chamber in some modifications of carburetors type. K-36.
Cleaning, defects and replacement of elements
After dismantling, all metal parts must be thoroughly washed, and the best way to do this is to use a special aerosol carburetor cleaner that dissolves resins and lacquer deposits. Compressed air purge is mandatory for all channels, including the smallest holes in the chicklers.
Special attention is paid to the condition of rubber seals: if the gaskets have traces of softening, cracking or losing elasticity, they must be replaced with new ones from the remix, using old gaskets is a guarantee that in a short time the problem with the air sucker will return.
When a defect is made, the float is checked for ease of travel on the axle and no fuel on it; if the float is damaged, its weight changes, which leads to the wrong level of fuel; and the valve saddle is examined, and it should not be painted or mud, preventing a tight closure.
The table below shows the main parameters and possible problems identified in the event of defects:
| Element | Normal. | Signs of malfunction | Action. |
|---|---|---|---|
| needle lock | Smooth surface, cone without bullies | Ring production, scratches | Replacement |
| Float | Light, airtight. | Gasoline inside, dents | Replacement or ration |
| jiclair | Clean hole, caliber retained | Blockage, shape change of hole | Washing or replacement |
| Throttle | Tight fit to the walls | Luft, bullies around the edges. | Replacement of the node |
If minor contamination is visible on the needle or saddle, you can try to gently wipe them, but in most cases for the engine. salute It's cheaper and safer to replace these components, and the cost of the refit is not commensurate with the risk of getting abrasive into the engine.
Assembly and initial setup
The carburetor is assembled in reverse disassembly, and it's important not to pull the screws of the float chamber lid so as not to deform the body or the gasket, the shut-off valve needle should move freely, and the float should not touch the walls of the chamber.
The primary setting is to set the approximate position of the adjusting screws. Usually the mix quality screw at idle turns 1.5-2 revolutions from the fully twisted state, which is considered the starting position for further fine adjustment on the running engine.
When assembled, slightly lubricate rubber seals with pure gasoline or silicone lubricant - this will help them get in place without damage and ensure better tightness.
After installing the carburetor on the engine and connecting all thrusts, you need to check the work of the accelerator pump (if it is provided by the design) or just make sure that when the valve is sharply opened, fuel is fed into the diffuser. If the engine does not start from the first attempts, you should not spin the starter indefinitely - this will pour a candle.
The cold engine is run by a mix enrichment system, and the pump lever is pushed to its extreme, and a few sways are made by the starter, and once the engine is grasped and started working, the pump is removed smoothly, and if the engine dies, it means that the mixture is still too poor or the idling system is unstable.
Precise idling adjustment
The final step is fine-tuning the engine on the warmed-up engine, the motor has to go to operating temperature, for which it is given a few minutes at medium speed, the adjustment is carried out by two screws: a screw of the amount of mixture (throttle stress) and a screw of quality of the mixture.
The adjustment algorithm is this: first, the number screw sets the minimum steady speeds, then the quality screw achieves the maximum speed increase, then again the number screw reduces the speed to a steady minimum, the operation is repeated until the engine is stable at minimum speeds and clearly responds to the gas.
Properly configured carburetor provides smooth work on idles without gases and allows the motor to instantly gain momentum when opening the throttle.
The quality check is done by opening the throttle abruptly, and if the engine stalls or fails, you need to enrich the mixture a little by turning the quality screw, and if the engine choks and smokes, the mixture is too rich, the screw needs to be twisted, and it can be difficult to find the middle ground, but it is worth it.
⚠️ Attention: Do not leave the motor running at idle speeds in a barrel of water or on the shore without load for a long time, as this can lead to overheating and violation of lubrication of crankshaft bearings.
Frequently Asked Questions (FAQ)
Why does the engine Salyut stop when the gas is discharged?
This is most often a sign of too poor idling or clogging of the idling channel, and it may also be due to the air suction through the gasket between the carburetor and the engine, or try to enrich the mixture a little with a quality screw or replace the gasket.
What is the best gasoline for the K-36 carburetor?
For two-stroke engines of the series salute The main thing is to monitor the freshness of the fuel and mix it correctly with the oil in the proportion indicated in the instructions (usually 1:25 or 1:50 depending on the model and running).
Can I wash the carburetor in an ultrasonic bath?
Yes, it is an effective cleaning method, but only for metal parts. Be sure to remove all rubber seals, gaskets and elements with plastic components before placing in the bath, as ultrasound can destroy them.
How often should the carburetor be cleaned?
Preventive cleaning is recommended once a season or after prolonged downtime (more than 2-3 months). If you use the boat intensively and refuel at checked gas stations, the carburetor may not require intervention for several years.