Idha, bhikkhave, rañño khattiyassa muddhāvasittassa jeṭṭho putto hoti ābhiseko anabhisitto acalappatto.  
It’s when some person is the eldest son of an anointed aristocratic king. He has not yet been anointed, but is eligible, and has been confirmed in the succession. ābhiseko → abhisekena (sya-all); abhiseko (pts1ed) | acalappatto → macalappatto (bj, sya-all); m-acalapatto (pts1ed)

Seyyathāpi, bhikkhave, rañño khattiyassa muddhāvasittassa jeṭṭho putto ābhiseko anabhisitto macalappatto;  
It’s like the eldest son of an anointed aristocratic king. He has not yet been anointed, but is eligible, and has been confirmed in the succession.

“Pañcahi, bhikkhave, aṅgehi samannāgato rañño cakkavattissa jeṭṭho putto pitarā pavattitaṁ cakkaṁ dhammeneva anuppavatteti;  
“Mendicants, possessing five factors a wheel-turning monarch’s eldest son continues to wield the power set in motion by his father only in a principled manner.
Idha, bhikkhave, rañño cakkavattissa jeṭṭho putto atthaññū ca hoti, dhammaññū ca, mattaññū ca, kālaññū ca, parisaññū ca.  
A wheel-turning monarch’s oldest son knows what is right, knows principle, knows moderation, knows the right time, and knows the assembly.
Imehi kho, bhikkhave, pañcahi aṅgehi samannāgato rañño cakkavattissa jeṭṭho putto pitarā pavattitaṁ cakkaṁ dhammeneva anuppavatteti;  
A wheel-turning monarch’s oldest son who possesses these five factors continues to wield the power set in motion by his father only in a principled manner.

“Pañcahi, bhikkhave, aṅgehi samannāgato rañño khattiyassa muddhāvasittassa jeṭṭho putto rajjaṁ pattheti.  
“Mendicants, an anointed aristocratic king’s eldest son with five factors aspires to kingship.
Idha, bhikkhave, rañño khattiyassa muddhāvasittassa jeṭṭho putto ubhato sujāto hoti mātito ca pitito ca, saṁsuddhagahaṇiko, yāva sattamā pitāmahayugā akkhitto anupakkuṭṭho jātivādena;  
It’s when an anointed aristocratic king’s eldest son is well born on both his mother’s and father’s side, of pure descent, with irrefutable and impeccable genealogy back to the seventh paternal generation.
Imehi kho, bhikkhave, pañcahi aṅgehi samannāgato rañño khattiyassa muddhāvasittassa jeṭṭho putto rajjaṁ pattheti.  
An anointed aristocratic king’s eldest son with these five factors aspires to kingship.

“Pañcahi, bhikkhave, aṅgehi samannāgato rañño khattiyassa muddhāvasittassa jeṭṭho putto oparajjaṁ pattheti.  
“Mendicants, an anointed aristocratic king’s eldest son with five factors aspires to become a viceroy. oparajjaṁ → uparajjaṁ (sya-all, pts1ed, mr)
Idha, bhikkhave, rañño khattiyassa muddhāvasittassa jeṭṭho putto ubhato sujāto hoti mātito ca pitito ca, saṁsuddhagahaṇiko, yāva sattamā pitāmahayugā akkhitto anupakkuṭṭho jātivādena;  
It’s when an anointed aristocratic king’s eldest son is well born on both his mother’s and father’s side, of pure descent, with irrefutable and impeccable genealogy back to the seventh paternal generation.
Imehi kho, bhikkhave, pañcahi aṅgehi samannāgato rañño khattiyassa muddhāvasittassa jeṭṭho putto oparajjaṁ pattheti.  
An anointed aristocratic king’s eldest son with these five factors aspires to become a viceroy.