Dozer is a general term, practical in this industry are primarily used five machines Type: mower, brush cutter, hedge trimmer, chain saw, a drug maker. Minus 30 ℃ when using the chain saw A recommended fuel mix ratio of 20: 1 to 15: 1 (must be mixed with high-quality air-cooled two-stroke engine oil), should add 10% to 30% of diesel lubricating oil within the saw chain (kerosene or gas oil ) were mixed before use, to ensure proper concentration. The ratio should be based on the amount of oil discharged from the saw chain and to decide to join extent, but should be controlled within a range of 10% to 30%. Second, the idle speed should be adjusted as follows: 2500 to 3000 rev / min and at room temperature at idle speed is 2000 rev / min. Two-stroke machinery fuel mixture ratio Usually two-stroke machinery fuel are mixed with motor oil made (where oil special oil for two-stroke engines), the ratio of the standard, gas oil ratio of about 25: 1 or so, depending on the use case may be, if not in use for a long time high-speed operation, may be appropriate to increase the concentration, if used often to maintain high dynamic turn, will have to appropriately reduce the concentration of, put some more oil, to ensure the normal lubrication of moving parts inside the cylinder, but pay attention to timely remove the muffler, remove exhaust Road coke, in order to avoid excessive carbon deposition into the cylinder, causing the pull-cylinder. Turf machine clears all plants within the site, and then measuring soil physical properties and pH value, check the drainage and irrigation facilities, and then after a disc harrow or a way to improve the look of artificial compaction of the soil, it can be re-seeded.