Mercury 25 HP Prop Question

[borntohunt]

I just bought a used Mercury 25 HP outboard. I decided to remove the prop after changing the lower unit oil to make sure it was not seized and place a little grease on the shaft. This is the first time I ever removed a prop. I got a strong arm and socket preparing for the job to be strenuous. It was easy to remove! I don't have a torque wrench, but I easily removed the nut with one hand. How tight should it be when I put it back on? There is no castle nut and cotter pin...just slide the prop on and then tighten the 19 mm nut.

Thanks in advance.

[EuropeanAM]

Welcome to BBC!

One of us would be more than happy to assist you with this question.

However.... when requesting "engine specific information".... we do need you to provide engine-specific identification (the engine's Serial Number).

[borntohunt]

No problem. The serial number is: 1B141006

[EuropeanAM]

Thank for the serial number.

For NON-Bigfoot models (metal locknut WITHOUT a locking or retaining ring): 16.7 ft. lbs is the appropriate torque (you'll have to round up to 17 ft. lbs with most torque wrenches).