Kulumikizana kwa mphete za GL Cone:
• Kumanga kosavuta kosavuta
• Sichifuna kuthira mafuta kapena kukonza
• Chepetsani kugwedezeka koyambira
• Thandizani kuyamwa kugwedezeka ndikupereka kusinthasintha kwa torsional
• Gwirani ntchito mbali iliyonse
• Ma halves ophatikizana opangidwa kuchokera ku chitsulo chapamwamba kwambiri.
• Kulumikiza mphete ndi pini iliyonse kutha kuchotsedwa pozichotsa kupyola theka la chitsamba cholumikizira kuti zitheke kusinthana mphete zosinthika mukatha ntchito yayitali.
• Imapezeka mumitundu ya MC(Pilot bore) ndi MCT(Taper bore).