340 Oil Priming Question First Start

I have never pulled the rocker shafts off. I’ll look at the factory service manual. Does the whole assembly come off or is it a complete disassembly?
they come off as an assembly. 5 bolts and the whole thing lifts off.

review the FSM but take note that the torque figure for the attachment bolts is incorrect in some printings. it should be 15~17 ft/lb not the 30-something that is listed.