Different pump, I went to the next lower volume. What was sent to me was a brand new motor with gear reduction attached... apparently special tools needed to perfectly center gear reduction on motor. All I had to do was two 6mm bolts to secure pump to gear reduction, then the grub screw on pump shaft.
Frank tells me from watching the video that the motor didn't sound right, motor ran maybe 5-10 minutes total before the vid... another 20 minutes maybe after the vid before the shaft snapped...
It's a yr now since I completed this model, the 1st motor started getting noisy almost immediately... it's been so long ago I can't remember what it's suppose to sound like.
Frank's on it!
I'm half asst tempted to trade this lil 450 off & get another 850... cause like the women say, "size matters!" ... so much run time on the 850, - twice the power - twice the reach, the 450 is kinda dull to run in comparison.