18型和26型等喷雾机上配套的小汽油机,气缸盖是压铸铝件,在使用中容易产生变形,从而引起漏气,导致小汽油机起动困难、转速不稳、功率不足和怠速易自动熄火等异常现象。通常是采用更换新件的办法来排除故障,但也可用下述简易的方法进行修复: (1) 先检查出气缸盖变形处,作好记号。然后将气缸盖端面朝上,放在型砂(细沙)的箱架中,稍用力压紧型砂,使其固牢。 18 and 26 sprayers and other small gasoline engine supporting the cylinder head is die-cast aluminum, easy to produce deformation in use, resulting in leaks, resulting in a small gasoline engine difficult to start, speed instability, lack of power and idling automatically shut down easily Anomalies. Usually the replacement of new parts to solve the problem, but also can be used to repair the following simple method: (1) Check the first cylinder head deformation, make a mark. Then the cylinder head end face up, on the sand (fine sand) in the rack, a little hard pressed sand, making it firmly.