Bought my priming rod from Mancini. I actually primed my eng by hand. I filled the oil pump with STP and then put a ratchet and socket on the priming shaft and started turning it backwards. After about 30 seconds it got tight and I had over 50 lbs pressure at the gauge. Of course a drill is the best way to do it but my 1/2" drill is on the blink so I tried this and it worked. But it wore me out after a few minutes. Ron