N’ihe mberede, mkpọchi nke nwere ike ịgbanarị n’enweghị nsogbu na ebe nchekwa nke mgbapụ ọkụ ka a na-akpọ mkpọchi mgbapụ. Mkpọchi mgbapụ nwekwara ọrụ nchekwa. E nwere ụdị abụọ: American ọkọlọtọ push lever ụdị na European ọkọlọtọ push ala ụdị. Nnọọ ịkpọtụrụ anyị.