Yanmar sail drive oil drain plug

[Lucky Duck]

I'm trying to find the size of screwdriver reccomend to remove the 'plug' but can't see that information listed online.

Currently some distance from the boat so trial and error isn't really on option!

 

[Momac]

Keep the following in mind in case 2mm slot width is the answer
HAZET 980-2X13 Slot Profile Screwdriver Socket - Chrome-Plated: Amazon.co.uk: DIY & Tools

 

[RichardS]

It's basically the biggest screwdriver you can get. Something around 12mm would be fine.

Richard

 

[Laysula]

As far as I remember I undid mine with a large screwdriver out of my toolbox with a hex on the shaft to fit a spanner on. Scredriver was about 15" long with a 10mm tip.

 

[Skylark]

Keep the following in mind in case 2mm slot width is the answer
HAZET 980-2X13 Slot Profile Screwdriver Socket - Chrome-Plated: Amazon.co.uk: DIY & Tools

I use a wide blade “stumpy” screwdriver. When my boat is in the cradle, the height of the handle is better for good purchase than it would be with a longer screwdriver.

I rather like the look of the socket in the link. An added advantage is that it can be used with a torque wrench to retighten.

Always a good idea to replace the seal. It costs pennies.

 

[tjbrace]

I use the Pela oil extractor to suck it out

 

[Crazy-Diamond]

I was having the same problem finding a screwdriver big enough on my Yanmar saildrive. Bitter experience shows that using a screwdriver that is too small is a bad idea on tight bolts. What I did was cut down an old chisel using an angle grinder, carefully removing metal until it was a nice tight fit. A pair of mole grips on the chisel provided excellent leverage and the bolt came straight out. The chisel is stored for future use!