(1) Knapsack Fertilizer Machine ( https://www.hongxiangseeder.com/product/fertilizer-machine/knapsack-fertilizer-machine-hx-a012.html ) cannot get on the car
　　 1. Check whether there is oil in the fuel tank and whether the fuel is clean.
　　 2. Check whether the fuel tank switch can be turned on.
　　 3. Check whether the fuel injector can inject fuel.
(2) The micro tillage machine is difficult to start
　　 1. Whether the pressure relief handle can be opened.
　　2. Can the engine oil be refueled according to the label?
　　 3. Whether the crankshaft bearing is seriously worn out.
　　4. Can the cylinder liner be "strained".
(3) The power of the starter of the micro-tiller is lacking.
　　 1. The smoke color of the initiator is black
　　 (1) Incorrect entry of oil supply.
　　 (2) The valve clearance is incorrect.
　　 (3) The tightening ratio is not up to standard.
　　 (4) Lack of air intake.
　　 (5) Slight "cylinder pull" and severe wear of crankshaft bearings.
　　2, Corn Sheller ( https://www.hongxiangseeder.com/product/corn-thresher/ ) launches the machine smoke color to blue
　　 The main reason is that the excess oil in the crankcase should be discharged from the oil.
　　3, the smoke color of the initiator is white
　　 is mainly because the fuel has water. The fuel should be precipitated and filtered.