The question of how much oil is in the Tent T4 engine is critical for any owner of this reliable outboard motor. Two-stroke engines This type of oil requires strict adherence to the ratios of mixing fuel and lubricant, because they do not have a separate lubrication system crankcase. Incorrect ratio of gasoline to oil can lead to rapid failure of the piston group or the formation of abundant soda.
For series engines Tent T4The amount of oil added is not calculated in liters, but in proportion to the amount of gasoline refueled. The standard value for running and operating most two-strokes of this power is a ratio of 1:25 or 1:50, which depends on the type of oil used and the manufacturer's recommendations. The exact amount of oil per tank depends on its volume, which in Tent T4 is 1.2 liters.Not a fixed value in the engine.
Ignoring the rules of preparation of the fuel mixture often causes overheating and bullying of cylinders. Owners need to clearly understand the difference between the running mode and the normal operation mode, since the requirements for the amount of lubrication during these periods vary significantly. Next, we will discuss in detail the technical nuances, mixing tables and procedures for maintenance.
⚠️ Warning: Never start the Tent T4 engine on pure gasoline without adding oil, which will cause instant destruction of rubbing parts and expensive repairs in minutes.
Technical specifications and lubrication system
Engine. Tent T4 It's a classic two-stroke air-cooled unit, and unlike the four-stroke version, it doesn't have an oil crankcase, a level-checking probe, or an oil filter, and it lubricates all moving parts with oil dissolved in gasoline, which is why the question of how much oil is in the engine is transformed into the question of how much oil to add to the gas tank.
The power of 4 horsepower dictates certain requirements for the quality of lubrication. At high revs, the temperature in the combustion chamber increases, and if mineral-oil If it's not picked correctly, it can burn too quickly before it can lubricate the crankshaft bearings, and the design of the motor is simple to maintain, but requires discipline from the owner at every refueling.
The power system is carburetor, which makes the engine sensitive to the quality of the fuel mixture. If you use old fuel or a mixture that has stood for more than a month, this can lead to clogging of the jellyplants. Modern oils for two-stroke engines often have color indicators that help visually control the mixing process.
Mixing proportions: break-in and operation
The break-in period is the most important stage in the life of a new motor, at which time all the parts are laundered, and the amount of oil in the mixture must be increased. Tent T4 During the first hours of operation (usually from 5 to 10 hours of motorized work), it is recommended to use a ratio of 1:25. This means that 25 parts of gasoline account for 1 part of oil.
Once the test is complete and all the compounds are checked, you can switch to the standard operating proportion. TC-W3 However, if you plan to work long hours at full speed or tow heavy loads, many experienced water-engineers advise not to go to 1:50, but to stay at a ratio of 1:40 to ensure safety.
Consider the specific numbers for a 1.2-liter tank that is normally installed on a Tent T4 outboard motor. At 1:25, you'll need to add 48 ml of oil to a full tank. When you go to 1:50, the amount of oil is reduced to 24 ml for the same volume of gasoline. Accuracy is crucial.
- 🛢️ For running (first 5-10 hours): 40-50 ml of oil per 1 liter of gasoline.
- ⚓ For normal use: 20-25 ml of oil per 1 liter of gasoline.
- 🔥 For heavy loads: 30 ml of oil per 1 liter of gasoline (intermediate version).
⚠️ Attention: The use of measuring tanks per eye is unacceptable. A 10 ml error can change the properties of the mixture by 20%, which is critical for a small tank volume of 1.2 liters.
Table of fuel mixture preparation
For the convenience of motor owners Tent T4 Here's a table that allows you to quickly calculate the amount of oil you need based on the amount of mixing capacity you have or the amount of gasoline you pour, and remember that you always pour gasoline into the can and then add oil, and then shake it carefully.
| Volume of petrol (litres) | Proportion 1:25 (break-in), ml | Proportion 1:40 (Load), ml | Proportion 1:50 (Standard), ml |
|---|---|---|---|
| 1.0 l l. | 40ml | 25ml | 20ml |
| 1.2 l (full tank) | 48ml | 30ml | 24ml |
| 5.0 l | 200 ml | 125 ml | 100ml |
| 10.0 l | 400ml | 250 ml | 200 ml |
It is important to note that for small volumes such as 1.2 liters, it is convenient to use a large medical syringe or a special measuring cap, which often comes with quality oils. Conventional kitchen measuring instruments can have too much error.
☑️ Pre-launch control of mixture
Choosing the Right Oil for Tent T4
The quality of the lubricant directly affects the life of the engine. Tent T4As with any other water-cooled or air-cooled two-stroke outboard motors, you need to use oils that meet the standard. API TC or JASO FC/FDThese standards ensure that the oil burns cleanly without leaving the coking on the piston and rings.
Mineral oils are cheaper, but they require more frequent replacement of the mixture in the tank (do not store the mixture for longer than 2 weeks) and give more soda. Synthetic and semi-synthetic oils are more expensive, but provide better protection at high temperatures and allow you to store the finished mixture for up to 6 months in a sealed container. For a 4 hp motor, it is not advisable to save on oil, since its consumption is minimal.
Avoid using dry-case motorcycle oils unless they are marked for outboard motors. Two-stroke oils should be easily emulsified with gasoline. The color of the oil (green, red, blue) is not an indicator of quality, it is only a dye for leak detection.
- ✅ Look for the label “For Water Cooled Engines” or “Outboard”.
- ✅ Prefer brands with proven reputations (Motul, Mercury, Tohatsu, brands with good reviews).
- ✅ Store the oil in a dark place at room temperature.
Can I mix different brands of oil?
Mixing oils from different manufacturers and different types (mineral with synthetics) is highly discouraged. Chemical additives can react, resulting in precipitation and loss of lubricating properties. If you move from one type to another, it is advisable to completely develop the old mixture or wash the system.
Procedure for replacement and maintenance of the system
Because it's in the engine. Tent T4 The oil does not change, but burns, and "replacement" means maintenance of the fuel system and replacement of the fuel filter. Regular maintenance prolongs the life of the carburetor. It is recommended to drain the residues of the mixture from the tank at the end of the season or if the engine is not used for more than a month.
The process of preparing for storage or maintenance is as follows: first, you need to disconnect the fuel hose from the engine, then twist out the tank drain plug (if it is designed in the model T4 tank, often it is at the bottom) or gently drain the fuel through the filler neck using a funnel with a filter, after which the tank should be dried.
It's also important to check the status of spark plugs. The color of the soda on the candle will tell you the correct proportion of the mixture. The brick-brown color indicates the right work. Black velvety soda indicates over-enrichment with oil, and light or white indicates working on too poor a mixture, which is dangerous for overheating.
The sequence of actions during conservation:1. Fuel residues drain.
2. Start the engine and develop the remaining gasoline in the carburetor (before stopping).
3. twist the candle, drop 5-10 ml of pure oil into the cylinder.
4. Slowly turn the crankshaft (pull the starter) several times to distribute the oil.
5. Wrap the candle back.
For long-term storage (winter), be sure to treat the outer metal parts of the motor with anti-corrosion lubricant (WD-40 or analogues), as salt water and moist air quickly destroy aluminum.
Typical errors and troubleshooting
One of the most common mistakes is mixing misalignment: If you pour oil first and then gasoline, mixing will be less effective, especially in the cold season. Always pour gasoline first. Also, it's a common mistake to use old, rancid gasoline, which loses its octane properties after 30 days.
If the engine Tent T4 If you start to smoke more than usual, it can indicate a violation of proportion (too much oil) or wear of piston rings. If the smoke is gone completely, and the engine starts to scream or warm up, immediately turn off the engine, this is a sign of clean gasoline. Vibration and loss of power can also be symptoms of problems with the fuel system.
Keep in mind that it's clean. Water entering the tank is a common cause of unstable operation, the water is heavier than gasoline and settles to the bottom, where the pump pump pumps it first, and use only high-quality AI-92 or AI-95 gasoline, depending on the recommendations of the specific engine modification (usually indicated on the sticker on the lower unit).
⚠️ Warning: If you have any knocks or a sharp drop in thrust, don't try to hit the shore at high speeds, and this is guaranteed to lead to a jamming of the engine.
The main secret of longevity of the T4 is not the complexity of the design, but the discipline of the owner in preparing a high-quality fuel mixture before each trip.
Frequently Asked Questions (FAQ)
Can I use chainsaw oil in a Tent T4 outboard motor?
Chainsaw oils (air cooling) have a different additive package and burn at higher temperatures, but they form more carbon, which in aquatic environment does not have time to blow out as efficiently as in a saw. Boat oils (TC-W3) are better dissolved and less pollutant, and are designed for temperature under water.
Which gasoline is better to pour into the two-stroke Tent T4: 92nd or 95th?
For most Tent T4 engines, which are replicas of time-tested designs (Tohatsu/Yamaha), the AI-92 gasoline is optimal. It contains less alcohols that can aggressively affect rubber carburettor seals, and is less prone to detonation in simple motors without correction sensors. AI-95 is acceptable, but does not give power gain at such volumes.
How much can you store a ready-made mixture of gasoline and oil?
Modern synthetic oils allow you to store the mixture for up to 3-6 months in a sealed metal canister in a cool place. Mineral oils and regular gasoline are recommended to use for 2-4 weeks. The old mixture is oxidized, forms resins that clog the jelly carburetor.
Why does the T4 Tent stop at idle speeds?
Most often, the reason is clogging the idle carburetor resins from old fuel or in the sucking of excess air through the gaskets, and it is also worth checking the adjustment of the screw quality of the mixture, sometimes the problem is solved by simply cleaning the carburetor and replacing the fuel filter.