I pulled the original "flat" PTO off my 125 and replaced it with a 6 pin ( WF ) that I had. Using the QA-42 with the heavy snow we got yesterday made it slip.
The flat NF has a single spring while the 6 pin WF has a double spring. When I purchased my other 125, it came with a 6 pin ( WF ) PTO.
Does the WF have more grip ( holding power ) than the NF PTO? I have worn out NF and also a WF "core" and wonder which would be better to rebuild?
Jeff