Use 90# upper grade pure gasoline, do not overfill.
2. Lubricant Oil
Add the mower lubricant oil to the scale (grid area) specified by the dipstick.
After the first operation for 5 hours, the lubricant oil shall be changed, and the oil shall be changed every 30-50 hours. To change the oil, you can drain the oil through the drain hole of the lower oil pan, or you can open the oil filler and tilt the machine to the left (the air filter must be on the upper part) to drain the oil. Attention: drain and refill the oil immediately after the hot engine stopped and the spark plug ignition wire has been removed, and the appropriate oil shall be added again to the specified scale (not too much or too little).
3. Air Filter
The foam filter should be cleaned every 25 working hours. When dust is more, it should be cleaned more frequent. Clean the foam filter core, wash it with kerosene or washing liquid and clean water, squeeze and dry it, then soak in oil and squeeze extra oil to install.
The paper filter should be cleaned every 25 working hours. When dust is more, it should be cleaned more frequent. If equipped with front filter, clean the front filter once every 25 working hours, and clean the paper core once every 100 working hours. Clean it more frequently when the dust is more. The cleaning of the front air filter is the same as that of the foam filter.
The paper filter element shall be lightly tapped on the table. If it is very dirty, it shall be cleaned as follows:
A. should be replaced or cleaned in low or non-foaming detergents and warm water solutions.
B. wash thoroughly with water from inside to outside until the water is clean;
C. Erect and air drying. It should be noted that the paper core cannot be cleaned with petroleum solvent, such as kerosene, etc., because it may cause deterioration of the paper core, do not put oil on the paper core, do not use compressed air to clean or dry the paper core.
4. Spark Plug
The spark plug should be cleaned and replaced every year.