Outboard Motors Impulse. - a series of petrol outboard motors developed by the Russian manufacturer OJSC "Red October" These engines have gained popularity due to a combination of affordable prices, adaptation to Russian operating conditions and maintainability. Yamaha or Mercury), "Pulse" is designed for domestic fuel, less demanding on the quality of oil and has a simplified design, which facilitates self-service.

The series includes models with the capacity of 2.5 to 20 hpThis is a solution that covers the needs of most owners of inflatable and aluminum boats up to 5 meters long. two-stroke (except for the new four-stroke modifications), which simplifies their design but requires proper preparation of the fuel mixture, and in this article we will discuss how to choose a model for a particular boat, which one is the most suitable for the new model. Unique "diseases" are characteristic of motors Impulse after 5 years of operationAnd how to avoid them.

Technical specifications of the motors "Impulse": a comparative table

The main parameters that should be considered when choosing are: capacity, weight, launcher (manual or electric) and recommended boat sizeThe following are the current models (2026) with key specifications:

Model Power (hp) Type of engine Engine volume (cm3) Weight (kg) Max. speed (km/h)* Recommended boat length (m)
Impulse 2.5M 2.5 two-stroke 52 12.5 10–12 3.2
Pulse 5M 5 two-stroke 88 18 18–22 3.8
Pulse 9.9M 9.9 two-stroke 172 26 30–35 4.5
Pulse 15M 15 two-stroke 246 38 40–45 5.0
Impulse 20FS 20 four-stroke 327 52 45–50 5.5

* Speed is indicated for medium load boats (2 people) with an aluminum hull.

Note: Models with index "M." - two-stroke, and "FS" The latter appeared in the lineup relatively recently (since 2020) and are more efficient, but require more careful maintenance. 1.2–1.5 l/h at maximum speed).

📊 What motor impulse do you have or plan to buy?
Up to 5 hp.
5-9.9 hp
10-15 hp.
15-20 hp.
Not yet.

Pros and cons of the engines “Impulse”: an honest analysis

Like any Technique, motors are Impulse. We've got strengths and weaknesses, and we're going to look at them based on feedback from owners and expert tests.

  • ✅ Price: The cost of new engines is 20-40% lower than imported ones (for example, the price of new engines is not enough). Honda BF5 or Toatsu 9.8) The second-hand model can be found on the secondary market for 30-50% of the original price.
  • ✅ RepairabilityParts are widely available and the design allows for most of the work to be done independently (e.g., replacing piston rings or carburetor).
  • ✅ Fuel adaptationThe engines run on AI-92 gasoline, while many imported models require AI-95.
  • ❌ NoiseTwo-stroke models (especially) Pulse 5M and 9.9M) is much louder than the four-stroke competitors.
  • ❌ Vibration.At high revs, there may be increased vibration, which affects the comfort of the control.
  • ❌ CorrosionAluminum parts of the lower unit (bottom of the motor) are susceptible to corrosion when operated in salt water without washing.

Important: Most of the defects are apparent after 3-5 years of operation For example, vibration is often associated with wear of crankshaft bearings and corrosion with the absence of corrosion treatment.

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Before buying a used motor, be sure to check the compression in the cylinders (the norm for two-stroke models is 8-10 atm). Low compression indicates wear of the piston group.

How to choose a motor "Impulse" for your boat: 5 key criteria

The power selection and model depends on the type of boat, its size and operating conditions.

  1. Length and type of boatFor PVC boats up to 3.2 m in length, sufficient Impulse 2.5M-5MAluminum boats will require 4-5 m 9.9M-15MFor heavy boats (with deck) only suitable 20FS.
  2. DownloadingIf you plan to carry a cargo (for example, for fishing), take a motor with a power reserve. For example, for a boat with 3 passengers, the minimum power is 8-9.9 hp.
  3. Pond typeFor rivers with the current or sea walks, you need a motor 20-30% more powerful than for standing water.
  4. Type of launchElectrical-start models (Impulse 15MEIt's more convenient, but heavier and more expensive. Manual launch is more reliable in low temperatures.
  5. Fuel budgetTwo-stroke engines are consuming. 0.5-0.7 l/hp per hourFour-stroke – 20-30% more economical.

Example: For a PVC Frigate 360 boat (length 3.6 m, max load 450 kg) is optimal Pulse 9.9MIt will provide speeds of up to 30 km/h when loading 2-3 people. Kazanka-5M* (Long 5 m) will be required. 15. or 20FS.

What happens if you put a motor that is too powerful?

Exceeding the recommended power for a boat leads to:

- increased wear of the transom (can crack the welded seam at aluminum boats);

- deterioration of handling at high speeds (the boat "traveling");

- the risk of overturning in sharp turns (especially for PVC boats).

In addition, motors more powerful than 10 hp require registration in the GIMS (see the section "Laws").

Top 3 typical breakages “Impulse” and how to eliminate them yourself

According to statistics of service centers, most engine malfunctions Impulse. connected misuse Consider the most common problems and ways to solve them:

1. The engine does not start or stops at idle speeds

Reasons:

  • 🔧 Clogging of the carburetor (especially after winter storage without preservation).
  • 🛢️ Wrong fuel mixture (for two-stroke models, the ratio of oil to gasoline should be 1:50).
  • ⚡ Failure of the spark plug (cool or breakage of the insulator).

Decision:

  1. Clean the carburetor (use a cleaner) ABRO CC-220).
  2. Replace the fuel mixture (if it has been stored for more than 2 weeks, the gasoline loses its octane number).
  3. Check the candle: the gap should be 0.7-0.9 mm.

Power drop and smoky exhaust

Symptoms: the engine "does not pull", black or gray smoke comes from the exhaust pipe.

Reasons:

  • 🔥 Wear of piston rings (compression below 7 atm).
  • 🛠️ Incorrect adjustment of the carburetor (fuel overflow).
  • 💧 Water entering fuel (for example, after rain under the lid of the gas tank).

Decision:

Check compression with a compressometer |Look at the candle for oil soak |Plute the fuel and check for water |Tune the carburetor (spins of quality and quantity of mixture)->

Engine overheating

Reasons:

  • 🌊 Clogging of the water channel (grass, silt).
  • 🔄 Failure of the pump (wear of the impeller).
  • 🚫 Absence of thermostat (on models without it).

Decision:

Clean the cooling system (remove the bottom casing and rinse the channels with a jet of water). If the pump does not pump water (no jet from the control hole), replace the impeller (articulation 1700-1308010 for most models).

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Regular washing of the cooling system after operation in salt or dirty water prolongs the life of the pump by 2-3 times.

Maintenance and conservation: step-by-step instructions

The right T. O. is the key to long-term engine life, and here's a seasonal checklist:

1. Annual service (before the season)

  • 🔧 Replace the oil in the gearbox (for four-stroke models, also in the crankcase). TAD-17I or Liqui Moly Marine Gear Oil.
  • ⚙️ Valve inspection and adjustment (for four-stroke motors).
  • 🔥 Replacement of spark plugs (recommended resource - 100 motor hours).
  • 🛠️ Gas cable and reverse grease (use) Litol-24).

2. Winter conservation

  1. Pour the fuel out of the carburettor and the gas tank.
  2. Put it in the cylinders. 5-10 ml of motor oil Then, turn the crankshaft (to protect against corrosion).
  3. Treat all metal parts with anticores (for example, Molykote G-Rapid Plus).
  4. Keep the motor upright in a dry room.

⚠️ Attention: Do not use conventional car oils for preservation - they contain additives aggressive to aluminum alloys, from which engine parts are made.

Registration of the motor "Impulse" in GIMS: what you need to know

According to the order of the Ministry of Emergency Situations of Russia No. 445 from 2020, engines with power over 10.88 hp (sic) Pulse 15M and 20FS) are subject to mandatory registration with GIMS. This will require:

  • 📄 Motor passport (original).
  • 📄 Passport of a Russian citizen.
  • 📄 Receipt of payment of the state duty (3000 RUB in 2026).
  • 📄 Application for registration (the sample can be downloaded on the GIMS website).

The procedure takes up to 10 working days, and after registration, you will be issued boat registration certificateMotors up to 10 hp are not required to be registered, but a boat over 2.5 m long will be required to operate. small-boat (Category M or GP).

⚠️ Attention: Operation of unregistered engine with a capacity of more than 10.88 hp entails a fine of up to 2000 rubles (Article 11.8 of the Administrative Code of the Russian Federation). In addition, in case of accident on water, the insurance company may refuse payment if the engine is not listed in the GIMS register.

FAQ: Frequent questions about the Impulse motors

Can I use the Impulse motor on seawater?

Yes, but with a mandatory fresh water wash after each exit, salt water accelerates the corrosion of aluminum parts (especially lower unit and propeller). corrosion-free for processing metal parts.

What kind of gasoline to pour into the “Impulse”?

Gasoline is suitable for all models AI-92. Using AI-95 is not an advantage, because the motors do not have a knock sensor. Important: do not store fuel in the canisters for more than 1 month, the gasoline loses its octane number.

How much oil should I pour into gasoline for two-stroke models?

The ratio of oil to gasoline. 1:50 (20 ml of oil per 1 liter of gasoline) Use oil for two-stroke water-cooled engines (e.g., Motul Outboard Tech 2T or Lukoil 2T Moto).

How to increase the speed of a boat with an Impulse engine?

Speed depends on several factors:

  • 🔹 Replace the standard screw with triblade (for example, 3×10×11 instead 3×10×13).
  • 🔹 Reduce the loading of the boat (every 10 kg of cargo reduces the speed by 0.5-1 km / h).
  • 🔹 Adjust the angle of inclination of the motor (optimum angle - 3-5 degrees up from the transom).

⚠️ Attention: Installation of the screw with inappropriate parameters can lead to overheating of the engine due to increased load.

Where to buy spare parts for the impulse?

Original spare parts can be ordered:

  • 🛒 On the manufacturer's websiteimpuls-motor.ru).
  • 🛒 In the shops "Motovelo" or outboard motors. (It is available in most regions).
  • 🛒 On the playgrounds. Avito or yula (But check the originality of the details.)

For popular models (Pulse 5M, 9.9M) parts are also manufactured by third-party manufacturers (e.g. "Start." or Neptune.).