1.发动机熄火后检查将发动机在水温60～80℃时熄火,减压手柄仍放在工作位置上,再摇转曲轴,使每个缸轮流转到压缩或作功行程时停一会。此时进、排气门都处于关闭状态,若在排气管处能听到“哧哧”的漏气声音,就说明排气门不严密;如果在空气滤清器处能 1. After the engine flameout check the engine flameout at water temperature 60 ~ 80 ℃, the decompression handle is still on the working position, and then cranked crankshaft, so that each wheel to flow to compression or work stop for a while. At this point into the exhaust valve are closed, if the exhaust pipe can hear “哧 哧 ” of the leak sound, it means that the exhaust valve is not tight; if the air filter can