Guys, I have in stock or can get just about any seal or bearing (in 2 days) from a lead I got as an industrial mechanic; He still helps me.
If I were to open an old motor, I would take off the clutch cover and clean the oil screen and oil filter rotor (if applicable), and if it were noisy at all, it may need a timing chain and the 2 tensioners/guides.
If it's super clean, clutch doesn't slip, and makes no noises, with maybe just a bit of smoke; I may not even open the bottom end...
It's a Honda, if the oil gets changed, they last decades.
But, once neglected, it's important to check the items I listed...
All our government does is distract us while they steal from us, misspend our tax $ and ruin our country