Last Saturday I put my 650 sj in at the ramp, rode easily around a rock wall to beach it and think I picked something up in the intake. Immediately got off and stuck my hand in both sides of the pump to see what it was. Didn't come up with anything. Started it back up, it idled fine and got on plane with no problem. After about 1/2 throttle, it would start to cavitate and buck like no other. While bringing it back in under a slow idle, I lost drive. Come to find out the prop backed itself off the shaft, got stuck in the housing, and chewed the hell outta the driveshaft threads.
My question is, with reverse threads on the driveshaft, shouldn't the prop try to tighten itself in the event that something got stuck in there? I never found any evidence at all of something being stuck or bounced up there. I am at a complete loss as to how it happened.
Going to pick up a driveshaft tomorrow night. My stainless prop is still in good shape so I want to re-use it.
Oh, and then I got


on by a bird in the parking lot. It was a bad day...
My question is, with reverse threads on the driveshaft, shouldn't the prop try to tighten itself in the event that something got stuck in there? I never found any evidence at all of something being stuck or bounced up there. I am at a complete loss as to how it happened.
Going to pick up a driveshaft tomorrow night. My stainless prop is still in good shape so I want to re-use it.
Oh, and then I got
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