Rubber fuel hose sizes?

[Autoarcheologist]

Does anybody know what size fuel hose the Clippers use?

I'm going through my usual process of replacing any rubber belts/hoses that are over 10 years old.  I just did the belts and eliminated the power steering squeal.  Next up is replacing the fuel filter and all the hoses and clamps. 

After that I will likely do the brake lines then the cooling system (radiator, fan clutch or switch to electric fans, hoses, thermostat, water pump).  I'm jotting down notes on which parts to buy that fit the RV 440.

Thanks!
Ian