How To Fill The Trimmer With Gasoline

How to start a petrol trimmer? How to start a petrol trimmer, how to properly start a petrol cutter after winter? What to do if the trimmer or brushcutter won’t start?

How to start a petrol trimmer?

1. Prerequisites
2. How to start a trimmer or petrol cutter motor?
3. Starting the brushcutter for the first time or after a long period of inactivity
4. Adding fuel through the spark plug holes
5. Checking the ignition system
6. Cleaning the engine
7. Checking the integrity of the spark arrester
8. Unstable carburetor operation
9. Draining fuel from the gas tank

How to properly start the trimmer is a question that the owners are puzzled with in the event of a device breakdown. And after a successful trimmer repair, the owner tries to avoid repeating the same situation.

How to start a trimmer or petrol cutter motor?

The new trimmer is simple during commissioning.

1. Check the motor type of the device. Trimmers are equipped with a 2- or 4-stroke motor.
2. Buy oil for this type of motor. Gasoline for trimmer AI-92/93/98, sold at all gas stations.
3. Mix oil with gasoline. Mineral oil is mixed in a ratio of 1: 34 with gasoline, synthetics in 1: 50. Follow the trimmer manufacturer’s recommendations for oil viscosity (see the label on the flask). All-season oil 5W-30 is used more often. Do not use untested car oils.
4. Pour a small amount (for example, 0.5 liters) of the resulting fuel into the tank.
5. Close the air damper by sliding the desired lever (see instructions).
6. Turn the ignition key (or handle) to the on position without this, the trimmer will not start. Beginners often make this mistake.
7. Pump some fuel into the carburetor if there is a manual rocker with a separate button or lever (see instructions). It takes 4-7 clicks.
8. Place the trimmer on a level surface.
9. Pull on the starter cord gently until you feel it slow down. Then pull it out sharply, but not completely. Repeat this movement up to 4 more times.
10. If the engine does not start, open the air damper again, otherwise the candles will flood with gasoline with further movements of the cord. Perform 2-3 attempts to start the engine with the handbrake open.
11. If the engine still does not start, close the throttle and make several more attempts to start it.
12. After starting the engine, press the throttle lever to idle.

Starting the brushcutter for the first time or after a long period of inactivity

A brushcutter differs from a trimmer in that it is not a fishing line that acts as a grass cutter, but a mechanical gearbox or a gear-based winch equipped with a knife. The knife drive is much more powerful than the line mechanism, a powerful gas cutter is also used when cutting bushes. Both Chinese and European petrol cutters are no different when the declared power is real.

Lithol or grease is used to lubricate the gears of the gearbox. After checking the gearbox, prepare the motor for operation according to the above instructions. If the start fails, the problem is already in the engine.

Prerequisites

The reason why the trimmer fails may be:

• Tank overflow;
• Excessive pumping of fuel into engines equipped with a manual supercharger;
• Wear in the motor of valves, cylinders, nozzles, cam followers and other moving parts;
• The tanks are out of gasoline and / or oil;
• The spark plug is out of order;
• Clogged fuel or air filters;
• The valves in the motor are out of alignment or burnt.

Adding fuel through the spark plug holes

If the trimmer engine does not have manual pumping and the device does not start, add some fuel to the engine itself through the spark plugs. Please do the following.

1. Check if the fuel level in the tank is sufficient to drain a small amount. It only takes 20 ml.
2. Remove the spark plug cap and unscrew it with a spark plug wrench.
3. If the spark plug is dirty on a used trimmer, rinse and ignite it. There should be no deposits on the spark plug electrodes. Do not damage the center conductor ceramic insulator. In a new trimmer, check the spark plugs for a manufacturing defect.
4. Put the plug back and check the spark ignition (discharge between the electrodes) when the starter is triggered.
5. Remove the candle again. Using a 20 or 50 cc syringe, pour 20 ml of gasoline into the plug hole.
6. Insert and fix the spark plug, setting the size of its technological gap at least and no more than a millimeter.
7. Pump up fuel using the fuel pump button (or lever) if your trimmer model has one. Press the button every 4 seconds.

Now try to start the engine. Close the air damper immediately after starting.

Consequences of filling with a mixture with incorrect proportions

When diluting fuels and lubricants, it is very important to observe the ratio recommended by the brushcutter manufacturer. If there is not enough oil, then scuffs will form on the piston and cylinder, which sooner or later will lead to a breakdown of the piston ring.

And with an excessive amount of oil, coking of the piston ring occurs, as well as the formation of carbon deposits on the piston, on the spark plug, etc. All this leads to heavy wear and tear of equipment and the need for constant cleaning.

Features of refueling brushcutters

Depending on the engine design, brushcutters are divided into two-stroke and four-stroke. In the first case, the piston in an internal combustion engine makes 2 strokes in one working cycle, and in the second case, 4 strokes. Differences in the principle of operation of the engine cause different approaches to refueling the trimmer.

Fuel mixture preparation rules

For many newbies who bought a brushcutter, the issue of diluting gasoline with oil for preparing a gasoline mixture becomes a problem. After all, you need to know the proportions and adhere to them very scrupulously. The instructions for the product usually indicate in what ratio to dilute the components: 1:25 or 1:32, or 1:40, or 1:50. This means that for 1 part of oil, you need to take 25, 32, 40 or 50 parts of gasoline and mix them.

In such categories, it is, of course, inconvenient to measure, therefore it is better to determine, by simple mathematical calculations, how much oil is needed per liter of gasoline. To do this, divide 1 liter, which is 1000 ml, by a known proportion. It turns out the following mixing table.

Ratio	Gasoline (ml)	Oil (ml)
1:25	1000	40
1:32	1000	32
1:40	1000	25
1:50	1000	20

Most often, mineral oils should be diluted in a ratio of 1:40, and synthetic grades 1:50. Whereas for budget Chinese brushcutters, the proportions are completely different 1:32 or 1:25. This is due to the fact that in low-power models made in China, a different assembly is used, and the distance between the piston and cylinder is much greater.

Further actions have the following sequence.

1. First, you need to pour gasoline into the container (canister), and then add the required amount of oil. If you first pour out the oil, then due to its higher density, it will settle on the walls of the container and mix poorly.
2. The next step is to mix the contents of the canister thoroughly by circular motions of the closed container.
3. After dilution to homogeneity, the fuel must be poured into the fuel tank of the brushcutter.

Detailed and visual instructions can be viewed at.

How to properly dilute gasoline for a trimmer

Depending on the trimmer type, they can be filled with a fuel mixture or separately with gasoline and oil. Now there is a huge variety of types of motor oils that are suitable for various equipment, including gardening. In order to choose the right fuel for a certain model of brushcutters, you need to know its technical features and understand the brands of gasoline and liquid lubricants. All the details on how to dilute gasoline with trimmer oil are in the material below.

Refueling a brushcutter with a two-stroke engine

In ordinary household models, the brushcutter, as a rule, uses a two-stroke engine. The petrol cutter does not need a lot of power and agility, so it is quite suitable for performing the tasks. In addition, this engine is much cheaper and simpler, but it is fueled with a fuel mixture that consists of oil and gasoline. Such fuel is poured into the carburetor and fed into the cylinder in the form of oil-gasoline mist. Thus, the oil provides lubrication of all the necessary parts, and during the operation of the engine it burns out together with gasoline. However, the combustion of this mixture is accompanied by the release of a pungent odor and smoke, which increases the toxicity of the exhaust gases.

Rules for pouring the mixture into different engines

All of the above is relevant for two-stroke engines. In the case of four-stroke engines, diluting and mixing nothing is required, gasoline is poured into the fuel tank, and oil into the crankcase. It is important to know that oil intended for a four-stroke engine or for a liquid cooling system cannot be added to a brushcutter with a two-stroke engine.. Otherwise, the entire piston system will be disabled or severe overheating will occur.

Refueling a brushcutter with a four-stroke engine

Four-stroke engines are used in professional brushcutters. They have great power and can work for a long time without interruption and refueling. They also use gasoline and oil as fuel, but they are poured into different tanks. This means that the oil does not participate in the combustion process, so the exhaust gases are not so toxic.

Mixture storage rules

The remaining unused fuel mixture needs a dark, dry area where it can stay for up to 2 months. In general, there are different expert opinions on this matter:

• For mineral oils the shelf life is 7-10 days, after which their lubricating properties are lost;
• For semi-synthetic and synthetic brands, there is evidence that they are stored from 30 days to 2 months.

After a longer period of time, it is recommended to change the fuel to a fresher and newer one.

So, above was described in detail the process of how to properly dilute the gas mixture for two-stroke brushcutter engines. To avoid damage to the trimmer as a result of insufficient oil or frequent cleaning and unstable operation due to excess lubricant, you should carefully read the operating instructions for the brushcutter and follow it scrupulously.

Oil selection rules

Engine oil, depending on the chemical composition, is:

• Mineral is made from petroleum distillates and is intended for low-power equipment with air cooling;
• Semi-synthetic is a mixture of mineral and synthetic oils and is suitable for 2T and 4T, as well as for air and liquid cooling;
• Synthetic, made on the basis of esters and can be used in powerful technology, as well as for work in difficult climatic conditions.

Depending on the API classification, the following groups of oils for trimmer motors can be distinguished:

• TA for low-power equipment with an engine volume of up to 50 cm³ and air cooling;
• TV for powerful equipment with a motor volume of 50-200 cm³ and an air cooling system;
• Vehicle for powerful two-stroke equipment (brushcutters, chainsaws, lawn mowers, etc.) with an engine volume of 50-200 cm³;
• TD for liquid cooled boat motors.

To select the optimal oil for a particular trimmer model, it is best to take into account the recommendations specified in the instructions. For brushcutters 2T, API-TB and API-TC oil is usually used.

Leading garden equipment manufacturers develop and produce oils for their equipment themselves. Such lubricating compositions most fully satisfy all the technical and operational characteristics of a particular series of trimmers. For example, for Stihl (Stihl) FS 5 brushcutters it is best to use Stihl HP or Stihl HP SUPER oil, for Husqvarna 143R, Husqvarna HP or Husqvarna LS oil is suitable. But for the Patriot brand, ordinary mineral oil M-8B is also suitable.

How to properly dilute gasoline for a trimmer

Depending on the trimmer type, they can be filled with a fuel mixture or separately with gasoline and oil. Now there is a huge variety of types of motor oils that are suitable for various equipment, including gardening. In order to choose the right fuel for a certain model of brushcutters, you need to know its technical features and understand the brands of gasoline and liquid lubricants. All the details on how to dilute gasoline with trimmer oil are in the material below.

Refueling a brushcutter with a two-stroke engine

In ordinary household models, the brushcutter, as a rule, uses a two-stroke engine. The petrol cutter does not need a lot of power and agility, so it is quite suitable for performing the tasks. In addition, this engine is much cheaper and simpler, but it is fueled with a fuel mixture that consists of oil and gasoline. Such fuel is poured into the carburetor and fed into the cylinder in the form of oil-gasoline mist. Thus, the oil provides lubrication of all the necessary parts, and during the operation of the engine it burns out together with gasoline. However, the combustion of this mixture is accompanied by the release of a pungent odor and smoke, which increases the toxicity of the exhaust gases.

Consequences of filling with a mixture with incorrect proportions

When diluting fuels and lubricants, it is very important to observe the ratio recommended by the brushcutter manufacturer. If there is not enough oil, then scuffs will form on the piston and cylinder, which sooner or later will lead to a breakdown of the piston ring.

And with an excessive amount of oil, coking of the piston ring occurs, as well as the formation of carbon deposits on the piston, on the spark plug, etc. All this leads to heavy wear and tear of equipment and the need for constant cleaning.

2-stroke petrol trimmers

Mototrimmers equipped with a two-stroke engine do not have a separate oil supply system for lubricating rubbing parts. Therefore, they need to be filled not with pure gasoline, but with its mixture with engine oil. Remember that the oil must be special, designed for two-stroke engines. Using automotive engine oil can damage the instrument.

Trimmers with a two-stroke engine should be filled with AI-92 gasoline. Of course, it will be able to run on gasoline with a higher octane rating. But when refueling with AI-95 gasoline, the engine will overheat and run unevenly.

Mix oil and gasoline in the correct proportion. If there is too little lubricant, seizures will appear on the surface of the piston and cylinder walls, then the piston ring will collapse, and the engine will jam. An excess of oil is not so critical, but it will also lead to unpleasant consequences. Carbon deposits will form on the piston, and the piston ring will coke, which will lead to a drop in power.

Usually, the proportions of gasoline and oil are indicated in the instructions for the tool. Many manufacturers prescribe a 50: 1 ratio for 50 parts of fuel to be filled with one part of oil. Therefore, there should be 20 ml of oil per liter of fuel. If the engine is worn out or the tool is under heavy load, the amount of lubricant can be increased to 25: 1 by pouring 40 ml per liter of gasoline.

The grade of gasoline suitable for a particular tool model is usually indicated in the operating instructions. If you ignore the manufacturer’s recommendations and fill the tank with fuel with the wrong octane number, over time, the device may simply fail. Trimmers are available with two-stroke and four-stroke engines. Their refueling and maintenance are significantly different.

What gasoline is needed for the trimmer Petrol trimmers with a four-stroke engine

The trim tabs, powered by a four-stroke engine, are more complex. Gasoline and oil are poured into different containers, from where they are then fed to the engine. In these models, you cannot use a lubricant designed for two-stroke engines.
Gasoline for a trimmer with such a motor must be of the AI-92 or AI-95 brands. It is not recommended to use fuel with a lower octane rating, as this will lead to unstable engine operation.

Many trimmer manufacturers strongly advise the use of fuels and lubricants produced under their own logo. They are often more expensive than analogues sold under other names. Should you pay extra for branded oil?
Gasoline tool companies do not produce fuels and lubricants. They buy these products from firms that produce oils, and then pack the grease in containers with their own symbols. Therefore, you can safely buy the right oil from any manufacturer. The main thing is that it matches the parameters of the engine.