Haha Glow Plugs. Last time I had any involvement with one of those was on our old Boat.
Used to be right fun starting her up.
First you had to take the Solar Panel clips on the battery off, then tighten the connections on the battery (Dad fitted a Kill switch there so that all the power to the boat would be killed when you're not using her) (This is the part where you're on the floor with your head in the engine bay).
Then once you'd done that, put the floor panel back down, then you'd have one hand crossed over the other, because, first you'd push the throttle up (Almost like choke), then put your hand on the keys, cross your arm over, and give the engine some heat. Let go, turn the key then "Dum dum....dum dum...........bup bup bup bup", then you'd bring the throttle right back down again
That was a good engine...Never needed any coaxing...Was a good boat that
I miss it.
Jack.