Is there a basic rule of thumb to use if you don't have a torque wrench? Like maybe hand tighten then wrench it to the next hole that lines up. Or is that too light? I'm putting a new OMC basic replacement oem prop on my Johnson 70. Thanks guys.
I tighten mine until I can't hold it on my knee, then back it off to the closest notch. Not a technical approach but after using a torque wrench several times, I've approximated the force needed on the wrench and just go with it.
The proper way to torque a prop nut is to place a 2x4 against the cavitation plate as a prop stop and torque to 85lbs with a torque wrench. Harbor Freight has them on sale all the time if you don't have one. An improperly torqued prop can cause pre-mature hub failure or worse.
