Oyenerera Excavator:6-30 matani
Utumiki wokhazikika, wokwaniritsa zosowa zenizeni

Malo ofunsira:

Ndizoyenera kutsitsa ndi kutsitsa katundu wambiri, ore, malasha, mchenga, miyala, nthaka ndi miyala, etc. m'mafakitale osiyanasiyana.
Mbali:
Kuchuluka kwakukulu, mphamvu zonyamula katundu zamphamvu, ntchito yosinthika, komanso kukweza ndi kutsitsa bwino;

Zopangidwa ndi zitsulo zamtengo wapatali, pambuyo pa njira yapadera yothandizira kutentha, zimakhala zosavala komanso zowonongeka, zotetezeka komanso zokhazikika, ndipo zimakhala ndi moyo wautali wautumiki;

Mapangidwe ake ndi osavuta, osavuta kukonza komanso osinthika kwambiri:

Imatengera kapangidwe ka ndowa ya clamshell, yomwe imatha kuzungulira madigiri 360, ndikupangitsa kuti ikhale yosinthika komanso yayitali.