(1) Ukukhutshwa kwendibaniselwano yegiya kukhulu kakhulu okanye kuncinci kakhulu.
(2) Umgama osembindini phakathi komngxunya ongundoqo we-crankshaft kunye ne-camshaft ephethe umngxuma utshintsha ngexesha lokusetyenziswa okanye ulungiso, ube mkhulu okanye ube mncinci; imigca yecrankshaft kunye necamshaft embindini ayihambelani, ikhokelela ekudakaleni kwegiya.
(3) Ukulungiswa okungachanekanga kweprofayili yezinyo legiya, ukuguqulwa ngexesha lokunyanga ubushushu okanye ukuguga okugqithisileyo kumphezulu wezinyo;
(4) Ujikelezo lwegiya--Isithuba phakathi kwezikhewu ezidlayo kwisangqa asifani okanye kuyenzeka umji wangaphantsi;
(5) Kukho amanxeba, i-delamination okanye amazinyo aphukileyo kumphezulu wezinyo;
(6) Isixhobo sikhululekile okanye siphumile kwi-crankshaft okanye i-camshaft;
(7) Isiphelo sesixhobo sokubaleka sesetyhula okanye ukuphuma kweradial kukhulu kakhulu;
(8) I-axial clearance yecrankshaft okanye icamshaft inkulu kakhulu;
(9) Iigiya azitshintshwa ngazibini.
(10) Emva kokutshintsha i-crankshaft kunye ne-camshaft bush, indawo ye-gear meshing iyatshintshwa.
(11) Isixhobo sokulungisa ixesha le-camshaft sikhululekile.
(12) Amazinyo esixhobo sexesha le-camshaft aphukile, okanye igiya yaphukile kwicala le-radial.