CharlieWaffles
Well Known Member
Is Service Instruction 1435 (http://www.lycoming.textron.com/support/publications/service-instructions/pdfs/SI1435.pdf) that details the Expansion plug removal applicable to our engines? The Service Instruction came with the factory YIO-540 but I don't know for sure if we need to do this to use a constant speed prop or if this is the factory configuration. The Service Instruction isn't clear on if this is applicable.