How much oil to add to the lawn mower and should you add oil to the new lawn mower

The two-stroke lawn mower uses mixed oil, that is, gasoline and engine oil, and the ratio of domestic two-stroke oil is generally 25:1, and the ratio of imported engine oil is 50:1.

Lawn mower: also known as lawn mower, lawn mower, lawn mower, etc. Lawn mower is a mechanical tool used to mow lawns, vegetation, etc., it is composed of a cutterhead, an engine, a walking wheel, a running mechanism, a blade, a handrail, and a control part.

The cutterhead is mounted on the walking wheel, the cutterhead is equipped with the engine, and the output shaft of the engine is equipped with the blade, and the blade uses the high-speed rotation of the engine to improve the speed a lot, which saves the working time of the weeder and reduces a lot of human resources.

Use. Lawn mowers are mainly used in garden decoration mowing, grassland greening and mowing, city streets, greening attractions, pastoral pruning, field weeding, especially in the park of grass and grassland, football fields and other grass fields, private villa gardens, as well as agriculture, forestry and animal husbandry vegetation and other aspects of the trimming, can also be used in the autumn harvest.

However, lawn mowers have certain limitations when mowing grass at the edge of rural fields, fields, and mountains, mainly due to problems such as uneven terrain, power supply methods, and the weight and portability of lawn mowers.

The lawn mower commonly used today is a gasoline lawn mower, also known as a gasoline saw. It has a wide range of uses, mainly used for lawn mowing and beautification in park meadows, green belts, factory meadows, golf courses, home gardens, meadows, orchards and other places.

Cause analysis and solutions:

2. The oil pump cannot effectively suck in and pump out the oil due to dirty or viscous oil, resulting in low or no pressure oil pressure. The solution: change the oil.

3. The oil is thin or the oil becomes thin due to the high temperature of the engine, which will leak from the gap of each friction pair of the engine, resulting in low oil pressure. Solution: Change the oil or overhaul the cooling system.

4. Oil leakage of oil pipe, damage to the oil pump or excessive wear of its parts will lead to a reduction in the intake and pumping of oil, or no amount at all, resulting in low or no pressure in the oil pressure. Solution: Overhaul.

5. The gap between the crankshaft and the size of the tile exceeds the standard, resulting in oil leakage, resulting in low oil pressure. Solution: Overhaul.

6. The spring of the pressure limiting valve or pressure relief valve is too soft or the hairpin or steel ball damage causes the function of the valve to disappear or weaken, resulting in a decrease in oil pressure. Solution: Replace and overhaul.

7. The oil pressure is low due to the failure of the oil induction plug, pressure gauge or circuit. Workaround: Replace the check.

No.

Every time before using the lawn mower, check the oil level to see if it is between the upper and lower scales of the oil scale. The oil should be changed after 5 hours of use, and the oil should be changed again after 10 hours, and the oil should be changed regularly according to the requirements of the manual. The oil change should be done while the engine is in a hot state.

Do not fill the oil too much, otherwise there will be difficulty in starting, large black smoke, insufficient power, overheating of the engine and other phenomena.

Precautions for the use of lawn mowers.

Before the lawn mower mows, it is necessary to remove the debris in the mowing area to avoid damage to the grass head and blades. When starting the engine in the cold state, the damper should be closed first, and then the damper should be opened in time after starting. If the turf area is too large, it is best not to work for more than 4 hours in the continuous working time of the lawn mower.

After the lawn mower is used, it should be fully cleaned, and check whether all the screws are tightened, whether the blades are defective, overhaul the high-pressure cap, etc., and strengthen the inspection or replacement of vulnerable accessories according to the service life of the lawn mower.

New lawn mowers need oil, four-stroke gasoline oil bottoms need oil, two-stroke gasoline oil bottoms do not add oil, and gasoline should add a certain percentage of oil.

1. The oil should be changed after the first 5 hours of operation of the new lawn mower, and the oil should be changed every 30-50 hours in the future.

3. No matter how it is released, the oil should be cleaned and restored immediately after the heat engine is stopped and the spark plug incineration line is removed, and the appropriate oil should be added to the regular scale.

Note: The waste engine oil released should be kept and handed over to the waste oil receiver to not be polluted.

3 allDue to the different brands and models of lawn mowers, the way of refueling may be different, when adding fuel, the anti-loss plastic wire inside the lid does not need to be pulled out, just add it directly, add the fuel to the appropriate amount, do not add too full.

139 is a four-stroke lawn mower, the four-stroke machine is added separately from oil and gasoline, generally gasoline is not much of a problem, the oil must be added according to the oil card, not lower than the oil card scale, can not be higher than the scale, add the middle of the scale, can not add less oil will pull the cylinder, add more will suffocate the machine.

The valve tightening dynamics of the intake and exhaust valves are changed as follows:

1. The gap is too large: after the intake and exhaust valves are opened late, the intake and exhaust time is extended, the opening height of the valve is reduced, and the normal valve phase is changed, so that the power of the initiator decreases due to the lack of air intake and the exhaust is not clean, in addition, the impact of the valve mechanism parts is added, and the wear is slowed down.

2. The gap is too small: after the task of initiating the machine, the parts are heated and contracted, and the valve is pushed open, so that the valve is not tightly closed, resulting in air leakage, the power decreases, and the sealing surface of the valve is seriously decorated or burned out, and even the valve hits the piston.

3. The exhaust valve clearance is larger than that of the intake valve due to the heat contraction, so the clearance is larger, which is actually about +mm than the intake valve.

Initially, as long as the crankshaft and cam positioning points coincide, the valve adjustment was not very difficult, and it only took a few more adjustments to get started.

139 is a four-stroke lawn mower, four-stroke machine is oil and gasoline added separately, generally gasoline is not much of a problem, the oil must be added according to the oil card, not lower than the oil card scale, can not be higher than the scale, add the middle of the scale. If you can't add less oil, it will pull the cylinder, and if you add more, it will suffocate the machine.

The spark plug is taken down and the machine is vigorously pulled to drain the waste oil in the cylinder body. After more than twenty strokes, put on the spark plug, and you're good to go, try it.

The two-stroke lawn mower uses a mixed oil, according to the volume ratio of two-stroke oil and gasoline 1:25 (ordinary engine oil: 50 (special oil) mix evenly.

The carburetor of the two-stroke mower is clean gasoline (above 90), and the lubricator oil is the special two-stroke engine oil for FD grade lawn mowers. The new machine idles for 2 hours, according to the ordinary engine oil 25:1, the special engine oil 50:

1. Mix and proportion. The engine oil should be correct, genuine, and clean, and the gasoline should be clean and fresh.

There is a special 2-stroke oil, 2stroke oil.

Lawn mowers are mainly gasoline engines, as long as they are gasoline engine oil.

The two-stroke lawn mower needs to be filled with steam engine oil, or diesel engine oil, what kind of oil does the key engine burn?

The two-stroke lawn mower uses a blend of oil, according to the volume ratio of two-stroke oil to gasoline 1:25 (ordinary motor oil: 50 (special oil) mix evenly.

The carburetor of the two-stroke lawn mower is clean gasoline (above 90), and the lubricating oil is the special two-stroke oil for FD lawn mowers. The new machine idles for 2 hours, according to the ordinary engine oil 25:1, the special engine oil 50:

1. Mix and proportion. The engine oil should be correct, genuine, and clean, and the gasoline should be clean and fresh.

Lawn mower selection considerations:

1) The choice of lawn mower should be decided based on the size of the lawn, the terrain, the situation of obstacles, and how to deal with the cut grass. If the lawn area is more than 2000 square meters, please choose a self-propelled lawn mower to reduce labor intensity and improve efficiency. If the terrain is undulating or slightly sloping, a self-propelled lawn mower can also be used.

When there are flower beds, shrubs or hedges in the lawn, choose a lawn mower with 10,000 guide wheels at the front. The 3-in-1 cutterhead is particularly suitable for grass collection or grass mulching.

2) The choice of lawn mower should also depend on the function of the lawn. Green machines and tee mowers are used for greens and tees of golf courses; For fairways and sports field lawns, such as football fields, rugby fields, etc., the best choice is a hob mower, or a rotary mower.

Ordinary green space, landscape lawn, etc., use rotary knife mower; The slope of the golf course uses a suspended lawn mower; Bush mowers (i.e., knapsack mowers) can be used for forest lawns or lawns with many obstacles.

Special lubricating oil and engine oil should be added.

The working principle of the two-stroke engine is the working principle of air sweeping, relying on the positive and negative pressure of the crankcase to realize the opening and closing of the reed valve and realize the mixture intake, there are two ports on the cylinder block, one is the intake and the other is the exhaust, the height is slightly different, the energy consumption of the two-stroke engine is relatively high, but the output power is high, which is why the general small machinery uses the two-stroke engine, in fact, the two-stroke and four-stroke engine are just a power source problem, considering the small and lightweight of the machine, so the two-stroke engine is used, Four-strokes can also be installed, but the volume will be slightly larger, and the output power and torque may be relatively small for the same displacement, for reference.

There is 2t is the best, there is no 2t, 4t engine oil or other gasoline engine oil can also be used, in order to work for a long time, the proportion of oil added is appropriately larger, this kind of machine is not afraid of smoke, the oil in the gasoline is a little more, the engine is provincial, the carbon deposit does not matter, the second flush is more carbon, at most it is the problem of changing a spark plug,

Due to the different lubrication principles of two-stroke engines and four-stroke engines, the lubricating oil of two-stroke engines is to participate in combustion, so it is best to use special engine oil for two-stroke engines, not four-stroke engine oil or gasoline engine oil, those engine oils are easy to cause large carbon deposits in the engine, which will reduce the performance of the engine and increase the wear of the engine.

The two-stroke engine is a mixture of oil, that is, the oil and gasoline are mixed in a certain proportion, and it is added to the gasoline to lubricate the cylinder, piston, crankshaft and other parts, and is discharged with the exhaust after combustion, so the two-stroke engine should regularly add the oil for combustion. Nowadays, many two-stroke lawn mowers have special oil cans and oil pumps, and there is no need to directly mix oil into the gasoline ditch, depending on which type of machine it is.