I have a Honda GX160 with gear reduction is Model GX160UT2HX2 Serial GCBPT-1198291. This comes with a splined crank that turns a 6:1 gear reduction unit. I am going to replace the crank so I can run a pressure washer. It needs to be a keyed 3/4 output shaft. There appears to be several flavors of cranks available. Part #s 13310-Z4M-6 or 8 series. Can anyone help me with the Honda part # I need? Thanks in advance