BR hepfo umwobo
Ibintu nyamukuru biranga ni ibi bikurikira:
1. Imiterere yoroshye, yoroshye guterana no gusenya, kuramba.
2. Ingaruka zo hejuru cyane kandi byihuta byo gucukura.
3. Gukoresha umwuka muke no gukoresha amavuta make. Umwobo urashobora gucukurwa kuri valve kugirango ugenzure neza.
4. By'umwihariko bikwiriye gucukurwa.
