Volvo Penta 290SP (single prop) outdrive - prop cone nut hole size?

[Anzezaf]

My boat is about 200km away and I would like to ask if anyone know what size is the tightening hole on the propeller locking cone nut?

Usually I see people jamming a screwdriver in there, but I wanna go to the hardware store and buy a steel pipe to stick in there and turn it with ease.


Thanks in advance!

 

[captmello]

I'd stay with a screwdriver, no need to over tighten. the bolt at the end, screwed into the prop shaft is the "lock".

 

[Anzezaf]

Thanks for the reply but I have my doubts about using a screwdriver..

The workshop manual calls for 110Nm / 81 ft lb for the cone nut and 22 Nm / 16 ft lb for the center screw.

110Nm is impossible to achieve with a screwdriver or any short rod

 

[Anzezaf]

For anyone reading this at a later date - a 10mm rod goes thru with a snug fit.

9.5mm or 9mm would be a guaranteed fit (fouling, old paint)