1. Palibe chifukwa chowongolera kutalika kwa nsonga ziwiri zamakina pamene nkhungu iyenera kusinthidwa, palibe chifukwa chosonkhanitsira kapena kutulutsa maunyolo otulutsa zinthu ndikutulutsa hopper. Chepetsani nthawi yosinthira nkhungu maola anayi mpaka mphindi 30.
2. Njira zatsopano zodzitetezera ziwiri zimagwiritsidwa ntchito, chifukwa chake zida zina sizidzawonongeka makinawo akatha popanda kuyimitsa makina.
3.Original unilateral hand swing device kuti ateteze makina kugwedezeka molakwika, ndipo kusasinthasintha kwa gudumu lamanja panthawi yoyendetsa makina kumatha kuteteza chitetezo cha woyendetsa.
4. Wodula filimu wamitundu iwiri wozungulira amatha kuonetsetsa kuti palibe chifukwa chopera mphero pakatha zaka zambiri akugwiritsa ntchito makinawo, zomwe zimathetsa vuto loti chodulira chodulira filimu chokhazikika chokhazikika chimavalidwa mosavuta.