1. You need to supply a source of water to the engine, or else you will "eat" the rubber impeller on the engine mounted raw water pump. A little a 15 to 20 seconds of running dry will trash the pump. Best way to furnish water is to attach a short hose from the inlet fitting of the raw water pump to a 5 gal pail that is either at the same level as the pump mounted on the front of the engine, or slightly above it. Let a free running garden hose almost fill the pail before starting the engine. Keep an eye on the water level in the pail, making sure it does not run dry. Do not connect a pressurized, i.e. direct feed hose to the water pump inlet. The water pump like other things is designed to suck, not be blown...
2. Not likely you will get spark when you crank. You will need to furnish a +12 feed to the ignition system as well. I am not familair with the physical connection for this to this particular engine. Far wiser heads on this site can help you on this.
My "thing" with engines that have not run for awhile, is to let it crank without ignition feed (or fuel) for several pulses of 5 seconds or so with 10 sec rests, in order to get some oil circulating in the engine before starting it up.
Normally, I wait until my oil pressure gauge indicates some pressure pulses first, but you are running without instruments. Often you will have to crank it awhile to get it to start anyway and this is an unnecessary step, however...
