导致拖拉机启动难的原因很多,常见的拖拉机启动难问题如下:一、气缸盖螺母未拧紧或气缸垫损坏转动曲轴时如发现气缸盖与机体的结合面处有漏气声,可能是气缸盖螺母未拧紧,也可能是气缸垫损坏。应拧紧或更换新垫。二、进气门或排气门漏气漏气的原因有两方面:一是气门间隙太小,使气门关闭不严,需要 Lead to difficult to start a lot of tractors, common tractor startup difficult problems are as follows: First, the cylinder head nut is not tightened or cylinder pad damage Turn the crankshaft cylinder head and the body found at the junction of a leak at the sound, it may be cylinder head nut Not tightened, cylinder pad may also be damaged. Tighten or replace the new mat. Second, the intake valve or exhaust valve leak There are two reasons: First, the valve clearance is too small, so that the valve is not closed, you need