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Towards the end of October, after the last cuts of grass, you can store the mower until the next mowing season. A few simple operations will allow you to find his four-stroke engine in good working order when the time comes.

Wintering a thermal mower

Practical advice

Clean the crankcase with an old, stiff bristle brush. To preserve its good cooling, do not allow to accumulate the dirt.
● Particularly harmful to the environment, the oil must be taken to a specialist garden or garage.

Whatever the intervention, disassemble the candle to avoid starting. Take the opportunity to descaling with a wire brush and check at the same time the spacing of its electrodes. If necessary, correct it with a set of shims.
■ Dirty and clogged, the air filter reduces the power of the mower and therefore the performance of the machine, hence the importance of regular cleaning. Regarding the oil change, the manufacturers advise for four-stroke engines to intervene every twenty-five hours of use: a determining operation for their service life.

Change the air filter

Start by unscrewing the lid with a screwdriver. Take out the case, open it and remove the sponge filter. Clean hands, rinse thoroughly with pure essence. Repeat the process several times, pressing well, until the gray spots disappear. Preferably, work over a basin to recover the solvent. Then soak the clean filter with a few drops of oil, which will help retain the dust.

■ Before replacing the filter, unpack the casing and casing using a brush soaked in gasoline. Let the product evaporate. Warning: if it is a cardboard cartridge filter, you must remove it to check for clogging in the open. If you find that the light does not go through, replace it.

Drain the engine

For overwintering, it is strongly discouraged to leave fuel in the engine: over time, the condensation would distort it. Suddenly, you would be obliged to empty it after the beautiful days. To empty the tank, use a pump or simply siphon it (taking all the necessary precautions) with a flexible plastic hose. Next, run the engine until it runs dry; you will know that the tank, the circuit and the carburetor are empty. Above all, do not return your mower to evacuate the mixture faster, you could spread it on the ground.
■ Keep the filler opening open to allow air to circulate. Extra caution: Avoid storing the mower in a dusty place. Particles would eventually get into the tank sooner or later. Optionally, protect it by turning over any container. The absence of waterproofing at the base will promote minimal ventilation.

Disassemble the candle

Disassemble the candle

Generally, on small lawn mowers like this, a single screw holds the air filter housing. Two turns of screwdriver are enough to deposit it. Work disassembled candle.

Pass filter and housing to gasoline

Pass filter and housing to gasoline

The filter retains impurities, perforations of the case too... With a well soaked brush, pass them to the gasoline, poured into a basin above which you can operate.

Remove filter and crankcase

Remove filter and crankcase

Follow the same descaling for aeration of the filter and its metal housing. Take the opportunity to dust off, with a dry brush this time, all the accessible elements of the engine.

Clean the sponge filter

Clean the sponge filter

Change the essence of the tank and thoroughly soak the sponge filter, pressing firmly in all directions. Repeat the process several times. In the end, the filter must be clearer.

Lubricate

Lubricate

Let the gasoline evaporate. Small tip: instill a few drops of engine oil on the filter before reassembling it. With this lubricant, impurities are more easily retained.

Fix the filtration block

Fix the filtration block

Press the filter again to spread the lubricant evenly. The filter block reassembled, fix it after having dusted its location on the crankcase of the engine.

Aspirate the old fuel

Aspirate the old fuel

Remove the tank cap and aspirate the old mixture (here, using a hand pump with a hose). This type of fuel is particularly polluting: do not pour around it.

Empty the engine

Empty the engine

Transfer everything to a container and take it to a dealer in a garden or garage. You will have to replace the candle and to launch the engine to empty it until the setting.


Video Instruction: Properly Storing Your Mower Battery Over Winter