How to start a petrol trimmer Instructions for starting a lawn mower engine for the first time, starting a petrol trimmer with a warm engine and the main mistakes that should not be made when starting a 2-stroke engine.
How to start a petrol trimmer
The process of commissioning lawn mowers, whether you bought it now or got it after winter storage, the rules listed below will allow you to avoid basic mistakes that can damage the tool.
Let’s say you just bought a petrol trimmer. Take the instructions out of the box and see if you have all the parts listed for the lawn mower. After that you can start building.
Starting lawn mowers with cold engine
To start the mower for the first time, locate the choke lever and place it in the closed position. Turn on the ignition on the handle. If your model has a manual fuel pump, popularly called suction, then press it 3-5 times until you see the fuel mixture inside the primer. The tool is now ready to run. Place the trimmer on a flat surface to ensure a stable position. Pull the starter rope gently until you feel its resistance, and then pull the rope towards you with a sharp movement 3-5 times.
If the engine starts after 5 jerks, open the choke. If this does not happen, open the air damper anyway (if the damper is open and you continue trying to start the engine, the fuel will flood the candle and you will have to dry it, and this is a waste of time).
If the engine does not start when the throttle is open, close it and continue pulling the cord. The first launch can be quite difficult and require up to 15 jerks. After the engine has started to work, press the throttle lever once, so you engage idle. Now let the engine run and warm up. After that, it can be stopped by pressing the Stop button.
Fuel mixture and refueling
For the convenience of preparing the fuel mixture, it is better to have a special canister, where one part contains gasoline, and the other contains 2-stroke oil. We recommend getting one like this, it is very convenient to use https://ru-sad.ru/prinadlezhnosti-dlya-sadovoy-tehniki/dlya-benzopil/kanistryi/
Next, take a measuring container with a scale applied to it, with its help you can prepare the mixture as accurately and quickly as possible. Look in the instructions what brand of gasoline and 2-stroke oil https://ru-sad.ru/prinadlezhnosti-dlya-sadovoy-tehniki/masla-i-smazki/ are recommended by the manufacturer of your lawn mowers. Pour gasoline and oil into a container for preparing a fuel mixture, according to the proportions indicated in the instructions. Then carefully pour the prepared mixture through a funnel into the trimmer fuel tank. The ratio of gasoline to oil should be exactly as indicated in the instructions. This is a very important point!
Starting the trimmer for the first time
When everything has been checked and the prepared fuel mixture is poured into the tank, the moment comes for the first start of the trimmer before running it in. To do this, you need to perform the following manipulations:
- Place the mower on a level, horizontal surface;
- Move the choke control lever to the closed position;
- We pump fuel into the carburetor with several strokes of the primer;
- Turn on the ignition switch;
- Smoothly pull out the starting cord until you feel resistance;
- Then make 34 sharp jerks with the cord until the lawn mower starts;
- After starting, open the air damper.
Inspection of the lawn mowers gearbox and its lubrication
The gearbox must be checked on a regular basis before starting the petrol trimmer. Lack of lubrication or a small amount of it increases the friction of the gear transmission of the gearbox, which operates at rather high speeds. The result is overheating and gears. The lawn mower gearbox is out of order. To prevent the occurrence of such a breakdown during operation, regular inspection helps.
If it is detected, before starting the gasoline spit, an insufficient amount of lubricant in the gearbox or its absence, LITOL is put into the body. For this, it is necessary to unscrew the screw on the bend of the gear housing and sprinkle LITOL in the amount of 1-2 ml.
Preparing for the first start of the lawn mower
Before you start the lawn mowers for the first time, you must perform a number of sequential actions:
- Inspect the gearbox and lubricate it;
- Prepare the correct fuel mixture.
Breather and exhaust port
Often, delicate branded lawn mowers will not start and stall due to a dirty breather. The main function of this element is to equalize the pressure in the gas tank. When this unit becomes clogged, a vacuum is created in the tank, which prevents the supply of fuel. You can eliminate the malfunction by cleaning the breather. You can use a regular needle for cleaning.
Normal operation of streamers with internal combustion engines can be disrupted due to dirt entering the exhaust channel or a clogged silencer mesh. There is such a problem on older generation models. The issue can be resolved by traditional cleaning and removal of the anti-spark grid.
complex reasons for lawn mowers failure
If the step-by-step troubleshooting algorithm does not work, and your scythe still does not start or stalls, it is worth inspecting the carburetor and the engine itself. A clogged carburetor can be one of the reasons for erratic tool performance. There are three main problems here:
- Clogged ducts or nozzles. All this is cleaned by special washes or blown by a powerful jet of compressed air from the compressor. Do not use needles and wires, as the bore may be damaged;
- Worn carburetor gasket. Exit replacement of a failed gasket;
- Violation of tightness. To check this indicator, you can use an ordinary household tonometer, replacing it with a suitable pressure gauge. Watch the readings: if they do not change everything is fine, but if the pressure starts to drop, then some part of the carburetor is faulty. We’ll have to find it and replace it with a new one.
If everything is in order with the carburetor, then the petrol trimmer may not start due to wear of the piston group. If chips, scratches or scuffs are found, the piston or cylinder should be replaced. Piston rings are subject to mandatory checks. A small backlash of the piston when rocking the connecting rod indicates that it is time to change the rings. It is best to entrust this procedure to the specialists of the service center.
Why the lawn mower won’t start troubleshooting
Caring for a personal plot, summer residents periodically encounter the fact that the lawn mower does not start. There are many reasons for tool failure. For the correct diagnosis of the problem, the owner of a useful unit in the country needs to know the device and the principle of operation of its individual parts.
- How to start diagnosing lawn mowers
- Checking the fuel mixture
- We carry out diagnostics of a candle and a candle channel
- Lawn mowers filter diagnostics
- Breather and exhaust port
- complex reasons for lawn mowers failure
- Rules for the operation and storage of lawn mowers