"Steve Lusardi" wrote in message
...
Diesels do not have any air controls. Power level of the engine is
determined by the amount of fuel entering the engine. The governors of
these
engines have a throttle control and a fuel cutoff lever. The cutoff lever
can be electric or manual, your choice. Many engine manufacturers have
emergency air shutoff valves as an option, which are very important.
Diesels
will run quite happily on their own lube oil. I would not own a diesel
without one. A runaway is a virtual bomb.
Steve

My old Fordson Major tractor has a throttle plate which controls the air
flow. To turn it off you pull a lever and it floods the engine to shut it
off. To start it you also pull the same lever out and let go of the lever
and crank it until it starts. When it starts the lever goes in on it's own.
I have never seen anything like it before. Also if you ether start it you
will blow a head gasket. The tractor was built in Feb. 1957. There is no
glow plugs on it, you just crank it until it starts.

Richard W.