How to start a gasoline grass trimmer correctly

Proper operation of a grass trimmer for grass

In every cottage community, village, suburb and in the city itself you can see these machines: they work tirelessly, leveling the lawn, cleaning the space of squares and parks, gardens and vegetable gardens from thickets of thistles, wormwood and weeds. The noise and crackle of trimmers is heard from the beginning of summer to autumn, until the growth of grass has slowed down so much that there is no longer a need to trim it. The automatic grass trimmer has earned its popularity for the simplicity of the device and operation. It’s easy to use, easy to care for, and in the event of a breakdown it can be easily repaired. In this article, it will be just about how to properly use the trimmer for grass.

As with any other technique, there are rules when working with a trimmer. To begin with, it is necessary to make sure that the main units and assemblies are intact: the propeller, the boom, the handle and the motor. If the machine is not yet assembled, it should be properly assembled according to the instructions.

Gasoline-powered machine

In the case of a gasoline trimmer, you need to check the gearbox for lubrication. Also, do not forget to add lubricant to the fuel tank, if the instruction manual says so. As a rule, gasoline and oil are mixed in a ratio of 45 to 1, but these figures may vary depending on the model and manufacturer, so you should carefully study all the technical requirements for the machine. The fuel container should be filled to the neck. If all the technical fluids are filled in, you can try to start the machine. But do not mow immediately, it would be better to let the trimmer work without load, so that the engine would get used to the fuel. A few minutes is enough before you put the brushcutter into full load.

Electric mower

With the electric trimmer everything is much easier. After checking that the gearbox has the necessary amount of lithium grease, you can get down to work. No additional measures are required. Unless you have to make sure that the carrier is not in the path of the mowing, in order to avoid possible damage.

When the device is ready for operation, you should make sure that there is nothing around that might hinder the work. If possible, the intended mowing area should be clear of snags, glass, rocks and other hard objects that can damage the trimmer blade or line.

It is better if other people do not approach the trimmer while it is working. Generally recommended distance of at least 10-15 meters to avoid getting small debris (mulch) in the eyes and face.

Depending on the work to be done, you need to select the attachment on the grass trimmer: a screw blade for weeds and hay, a line for the lawn trimmer or a circular saw for shrubs. Mow in the opposite direction to people, if possible away from buildings and constructions. Do not get too close to fences and other constructions because the trimmer line may catch on sharp edges and the screw blade may bend if it accidentally bumps into a hard object.

The very preparation of the device will not take much time, all modern models of devices are designed to facilitate and simplify their operation, starting to work in the shortest possible time.

How to start the lawnmower correctly?

Regardless of the type of this action, there is a strict order that must be followed, that is:

Inspection and Inspection

Any malfunction of a grass trimmer can be a serious hazard.

Loose bolts securing the clutch bell to the engine can lead to rapid abrasion of the clutch shoes, and any leaks in the fuel system can often lead to ignition and burns or fire.

Loose gearbox bolts can cause the drive shaft rod to pop out and the grass trimmer to stop working. Loose bolts securing the handles can lead to involuntary lowering of the shaft and damage to the cutting tool.

Therefore, before any start-up, you should at least briefly inspect the machine for defects. This is especially true for any first start-up, whether after purchase or after storage. During work starts it is permissible to inspect only the fuel system for leaks.

One of the most important inspection steps before any first startup is to determine the amount of lubricant in the gears and drive shaft, which will require disassembling the grass trimmer and removing both gears from the shaft.

In this way you can assess the amount and condition of the grease not only on the filling hole side but also in the contact area between the shaft and the gear pinion.

Also every 2-3 weeks check the amount and condition of the oil in the crankcase of four-stroke engines, if the machine will work long with low oil levels, there is a high probability of jamming the crankshaft.

Filling the tank with fuel

This operation has to be done after the purchase and winter storage, as well as during the termination of work caused by the exhaustion of gasoline. Four-stroke engines are filled with pure gasoline AI-92, and two-stroke engines with a mix of fuel and special oil we told you about here.

Remember, if you fill up the two-stroke trimmer for grass after winter storage, be sure to drain the old fuel from it, because it has already lost its lubricity, so the crankshaft bearing and cylinder piston group will work without lubrication.

String Trimmer Basics: String Trimmer Fueling and Starting

start of the gasoline thrift gauge

Regardless of the type of starting, there are 6 actions that you always have to do:

  • priming the fuel;
  • setting the choke to “start” position (“on”, “off”);
  • setting the switch to the “on” position (“on”);
  • pressing and fixing the throttle key;
  • pulling of starter rope with the choice of a free stroke;
  • putting the choke in the “operating” position (“open,” “on”).

You can do the first 3 things in any sequence, but pull the starter rope only after them. Neglecting to pump fuel will result in pulling the cable of the manual starter more than a dozen times, so that the moving engine piston pumped enough air that sucks fuel from the carburetor.

Neglecting the choke shutter causes the mixture to become very thin. good for a running engine but bad for starting, because this mixture will only ignite well inside a warmed cylinder.

After moving the air damper to the closed position, the incoming air is not sufficient to run the engine at idle speed, so press and lock the gas pedal (gas pedal, engine speed regulator) key. The engine on/off button blocks the ignition system, so move it to the “on” position before starting.

If you do not move the switch to the right position, the voltage will not come to the spark plug, and therefore there will be no spark, which ignites the mixture in the cylinder.

After the engine has started, move the air damper to the open position, since a greatly over-enriched mixture is good for starting, because it ignites even in a cold cylinder, but because of the lack of air the fuel does not burn completely.

Attempting to mow grass with a closed air damper will lead to a sharp drop in engine power and high heating of the valves, so long operation (dozens of hours) leads to burnt-out valves or damage of the cylinder head gasket.

Changing the oil in a lawn mower with a four-stroke engine

For lawn mowers with four-stroke engines, there are three main products in the Liqui Moly garden program:

Changing the oil in a four-stroke lawn mower is done in a few steps.

  • Start the mower and let the engine run for about 10-15 minutes. The oil will warm up and drain better during this time.
  • Turn off the engine, unscrew the drain plug on the catheter.
  • Turn the lawnmower on its side with the drain side of the oil tank you want.
  • Drain the used oil into a prepared container, it must be disposed of. Close the drain cap and place the mower on all four wheels on a level surface.
  • Open the oil filler cap. Use the dipstick to check that the oil is drained (a small remnant is usually still present).
  • Fill up with fresh oil (consult the instruction manual if you do not remember the oil volume) and check the level with the dipstick. Replace the spark plug cover. Lawn mower ready to go.

Oil for lawn mowers with a four-stroke engine

The more attention we pay to our equipment, the longer it will last. No matter how simple the device may seem at first glance, there are requirements and recommendations, compliance with which will prolong the life of garden assistants, and you will not be inconvenienced by their operation. For long life of your gardening equipment without service interventions it needs to be used properly and serviced properly on a regular basis.

Gasoline grass trimmer does not start: causes of lawnmower failure. Ways to fix it. What to do if the brushcutter’s spark plug fills up and the spark is still there but it won’t start?

Preparation of Fuel Mixture and Refuelling

For the convenience of preparing the fuel mixture, it is better to have a special canister. where one part contains gasoline and the other part contains 2-stroke oil. We recommend to get a similar one, it is very convenient to use https://ru-sad.Pour petrol and oil into the tank to make the fuel mixture in the proportions shown in the manual

Next, take a measuring container, with a scale printed on it, with its help you can prepare the mixture as accurately and quickly as possible. Look in the manual for the brand of gasoline and 2-stroke oil https://ru-sad.It is very important to have a special fuel canister, which is recommended by the manufacturer of your lawnmower. pour petrol and oil into the fuel mixing container in accordance with the ratios specified in the manual. Then pour the ready mixture carefully, through a funnel, into the fuel tank of the grass trimmer. The ratio of petrol and oil must be exactly as described in the instructions. This is a very important point!

Preparing the fuel mixture and refueling

For convenient preparation of the fuel mixture it is better to have a special canister. Where one part contains gasoline and the other part contains 2-stroke oil. We recommend that you get one of these, it is very easy to use

Next, take a measuring container, with a scale printed on it, with its help you can prepare a mixture as accurately and quickly as possible. Look in the manual what brand of gasoline and 2-stroke oil https://ru-sad.Copyright © lawn mower manufacturer’s recommendations for your model of lawn mower. Pour gasoline and oil into the fuel mixture container according to the proportions shown in the manual. Then carefully, through a funnel, pour the ready mixture into the fuel tank of the grass trimmer. The gasoline to oil ratio should be exactly as described in the owner’s manual. This is a very important point!

Film: How to start a mower without a starter motor?

Allow the engine to warm up for 5-10 minutes. Do not start mowing immediately after a cold start. The grass trimmer motor should work.

Start the brushcutter for the first time or after a long standstill

A power tiller differs from a grass trimmer in that a grass trimmer is not a line for a grass trimmer, but a mechanical gearbox or gear-based winch equipped with a blade. The blade drive is much more powerful than the logging mechanism. When trimming shrubs, you also use a powerful hedge trimmer. Both Chinese and European lawn mowers do not differ in terms of stated power.

Use gear oil or solid oil to lubricate the gears. After checking the transmission, get ready to check the engine itself. If the failure occurs at startup, the problem is already in the engine.

Add fuel through the spark plug holes

If the engine has no manual injection and the machine will not start, pour some fuel into the engine itself through the spark plugs. Perform the following steps.

How to start a petrol grass trimmer

  • Make sure there is not enough fuel in the tank to drain a small amount. You only need 20 ml.
  • Remove the spark plug cover and unscrew it with a wrench.
  • If the spark plug on your trimmer is dirty, flush and glow it. There should be no deposits on the electrodes. Do not damage the ceramic insulator of the center conductor. On a new trimmer, check to see if the spark plugs are damaged at the factory.
  • Screw the spark plug back in and check the ignition (discharge between electrodes) with the starter on.
  • Reinstall the spark plug. Using a 20 or 50cc syringe. Pour 20 ml of gasoline into the spark plug hole.
  • Insert and tighten the spark plug with at least one millimeter gap.
  • Pour fuel using the pump (or lever) if it is installed on your grass trimmer model. Press the button every 4 seconds.

Now try to start the engine. After starting the engine, close the choke.

Check ignition system

If the grass trimmer has already been used, check the condition of the (currently) removed spark plug by replacing it with another. For example, if the ceramic dielectric is damaged and the electrodes are bent when checking the spark plug, purchase such plug according to the product code on the part itself and check it with a marker in the grass trimmer instruction manual. A plug without an insulator and/or with bent electrodes will not give a normal starting spark.

If the spark plugs are OK but no ignition is observed, check the ignition coil with an ohmmeter (multimeter). No reading (infinite resistance) is a sign of a faulty coil winding. If it is sintered due to overheating as a result of a short circuit, the spark voltage will be insufficient.

Since it uses a very thin wire that converts 12.6V from the battery to 30,000, it is difficult to repair (rebuild) even in the workshop. The coil needs to be replaced.

If the engine does not start or does not run properly

If the engine does not start after two or four pulls of the starter cord, it may be caused by the following

This is usually due to improper starting of the grass trimmer, when the wrong starting procedure or missing an important component.Simply start the machine correctly and the engine will start on its own. If the lawn mower doesn’t start well after storage, the old gasoline has probably run out, so just replace it.

If the grass trimmer has not been serviced for several seasons, poor starting may be caused by a dirty air or fuel filter, so simply flush or replace it.

If all the steps have been performed correctly, but there is no positive result, contact a workshop or perform diagnosis or repair yourself.

If the grass trimmer has not been serviced for several seasons, poor starting may be caused by a dirty air or fuel filter, so simply flush or replace it.

Why the grass trimmer heats up and shuts down?

When the load increases, there may be temperature rejection of a dirty spark plug. The lawnmower, when heated, stops, and it will be possible to start after a certain amount of time after it cools down. Tightly screwed spark plug does not give a normal spark, the gaps increase, and to this is added soot.

  • 1:25. 40 milliliters of oil per liter of gasoline;
  • 1:40. 25 milliliters of oil per liter of gasoline;
  • 1: 50. 20 milliliters of oil per liter of gasoline.

How much oil per liter of gasoline for a boat motor?

Two-stroke boat motors with combined lubrication system require petrol and oil mixture preparation: for running-in. in proportion 1:25 (1 liter of oil to 25 liters of petrol); for long trips in high-speed mode, transportation of heavy loads. in proportion 1:50 (1 liter of oil to 50 liters of petrol);

start, gasoline, grass, trimmer, correctly

Mixture Ratio For a 1:50 mixture you need 5 liters of gasoline and 0.10 liters (100 cm³) of STIHL 2-stroke oil.