Originally Posted by Firstrib
RE the prop, may invest in a spare one. Is this the repairable on the water with socket set if I have a disaster?
Do you mean can you change a prop afloat?
The easy answer is yes. Things are not quite so simple in reality. With a L/Shaft engine on a small boat the prop is a long reach over the transom which makes it at least awkward, and potentially dangerous depending on the conditions, who else is on board etc. I've heard of people on bigger boats actually going for a "swim" to do it.
The good news is that usually when you ding the prop you are close to shore so can at least anchor.
So lets assume you've got the boat in a safe, sheltered spot, and disconnected the kill cord etc. You first need to remove the split pin - usually you'll need pliers
. Assume you'll drop it so you'll need a spare split pin
. Then you need to remove the castellated nut - it shouldn't be ridiculously tight but you will need a spanner or socket
the right size. Check before you go, usually this is bigger than most small tool kits include; you can get a floating spanner. You then need to remove the prop from the shaft. Hopefully it just slides off (because you greased the shaft last time right?) - but you might need something to help get it moving, especially if your angle is a bit awkward. Now you may find the thrust washer is stuck to the old prop - so you either need a spare thrust washer or some way to prise it off (like a big screwdriver). Some marine grease on the shaft and reassemble in the reverse order, doing the nut up finger tight and then just enough to get the split pin through. You'll appreciate that doing this hanging half upside down off the transom in a swell is not going to be trivial and having all your tools etc on a lanyard
will make it much less likely to go badly wrong. I strongly suggest practicing in the driveway or somewhere else much less hostile so you know what to expect!
I imagine most SIBbers will just use low revs to limp ashore and either straighten the worst of the damage with some pliers/lump of wood or make alternative arrangements but I take a spare on holiday with me as missing a couple of days whilst trying to source one would be a PITA.