Am working with a GCV190 for a lawn mower. After several repairs, I fastened it to a test lawn mower deck & attached some blades. I have seen before that this is advised because the lawn mower version of the 190 has the regular flywheel (not heavy like in a pressure washer) & thus needs the weight of the blades to run properly. However, the mower on which I am contemplating affixing this engine is an HRX217 with the roto stop (blade brake) feature. So my question is: can you bench test an engine without blades? I mean, with the roto stop, the blades are not spinning & this does not seem to affect the engine's rpms or anything as else as far as I can tell. It sure would be easier to bench test this engine without going to the trouble of attaching blades every time before so doing.