Hi Norm, the engine I pulled off was 11HP. CyberJack has a nice brochure in the history section from ~1985 showing this too. It also has to have a 1" shaft, not sure a 5-8HP would?
How does a 30" cutting disc stack up against others available? Is that bigger than normal? When it did work it cut onion weed/Guildford grass better than anything else I've seen, I put this down to a pretty fast tip speed on the blades due to large diameter disc that you might not get from smaller multi-cutter mowers.
