Bought an old 80's 743. Not sure of the exact year. I am a beekeeper and already have a 751. But this 743 has a vertical mast on it. Makes it far easier to see the bee pallets and load them on trucks in the dark. There are a few issues I need to get fixed. First, that thing starts terribly. I have to basically hold the starter to get it to crank even after preheating. I assume the glow plugs need to be changed? Next, the machine ran hot on me after running it a few minutes. I topped off the radiator first but I think it needs a good flush and maybe a new thermostat. Third, it seems to drip a lot of oil out of the blowby tube. Maybe it was because it ran a little hot but I am slighty concerned. I assume that is bad sign. And lastly, it wont shut off with the key. I have to hit the fuel shutoff on the engine. Is it missing some sort of shut off solenoid? I know this post is kind of a ramble, but I just need a little input as to whether it is worth fixing or maybe just mount the mast on my 751. Thanks, Colby.