The hand-held tractors are lightweight, flexible, and widely applicable. They can be used in rural transportation, but also can be used for farmland operations, with less investment at one time, and are welcomed by farmers. According to the requirements of the purchase, select the required model, and then select according to the manufacturing quality, price, maintenance and local parts supply, according to the following steps.
1. Check the appearance of each component to see if it is complete, whether it is damaged or not, and check the tools and vulnerable parts of the vehicle against the instructions. Check whether the weld quality is good, and whether the casting part has any defects such as pores and trachoma. Observe whether the parking ground has oil and water marks, and whether there is any oil leakage or water leakage. Check whether the connection is firm, whether there are loose bolts and nuts, how much carbon is deposited in the exhaust pipe, whether the paint color is normal, whether there are oil marks, and whether the paint and plating surface are detached or bumped.
2, check the intrinsic quality
1Crankshaft inward clearance and radial clearance: It is used to rotate the flywheel in both horizontal and vertical directions. It should block obvious turbulence and rotate freely, without any stagnation. 2 compression performance: After decompression (the throttle is not supplied with oil), one-hand crank to start the handle should not be light and heavy, and feel normal. Then, quickly crank the start handle and release the decompression handle. The piston should be able to exceed one compression stroke. 3 oil supply situation: After refueling, drain the air in the oil circuit, throttle the fuel supply and decompress it, start the handle at a moderate speed, and you should hear the sound of the “beep†sound of oil injection. 4 start performance: start by the correct method, the engine should be able to fire once, up to no more than three times. 5 Operation: After the start of operation, the oil indication buoy should be raised. When the throttle is in large, medium and small positions, it should be able to run smoothly, the sound is soft, there is no knocking and abnormal sound, and the exhaust should be basically smoke-free.
3, check the operating site
1 Clutch operation: When the clutch brake handle is placed in the “off†position, it can be easily attached to the gear, and there is no “click†noise. When the clutch brake handle is slowly relaxed, the tractor can start steadily. 2 Whether the brake is valid: When the clutch brake lever is pulled to the “braking†position, the tractor should stop immediately. 3 Steering: Use the medium and small throttles, hang up the low gear, and pinch the steering handles on both sides. At this time, the tractor should be able to turn to the side where it was pinched.
4, check the walking situation
The gear lever is placed on any gear, the tractor should be able to obtain a corresponding direction and speed of travel, and the gearbox and transmission should have no abnormal noise when walking. Check whether the bearing caps are hot at all locations, whether the power generation and lighting are good, whether the tire rubber is aging, and whether the tire pressure is normal.
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