Specifications

is to help identify some important things necessary to truly befit from diesel and insure
your generator continues to run long after its equivalent gasoline generator has died.
Diesel engines operate at twice the compression ratio of gasoline engines; create
greater internal pressures and heat. Components are made to closer tolerances,
therefore are more easily damaged by dirt, corrosion improper fuel and lubricants.
Diesel injectors are expensive precision parts that handle fuel pressures as high as
137,900 kPa. Using correct diesel fuel is essential because it not only runs the engine,
but also lubricates and cools the fuel pump, injectors and spray tip. Dripping or leaking
injectors can cause rough engine operation, destructive unbalanced cylinder
temperatures, crankcase oil dilution and incomplete combustion.
Because of diesel fuel’s acid content, combustion byproducts are more corrosive.
Greater diesel heat also converts combustion byproducts to varnish inside the engine
more rapidly.
Dirt and water by passing fuel filters can badly score fuel pump and injectors, requiring
replacement. Rust can cause sticking in pump pressure regulator valves. Water in fuel
can also cause hard starting, uneven running and frequent stalling. Because diesel
engines breathe more air per hour than gasoline engines, air leaks through cracks,
loose connections or holes in flexible hoses can cause serious and expensive engine
damage.
Clogged air filters reduce power. Diesel engines make more use of oil as coolant
because of greater heat and pressure. For example, the oil cools piston undersides.
Improperly or inadequately filtered oil can cause scoring and damaging of engine parts.
Inadequate circulation of oil and coolant can cause engine overheating and thermal
distortion.
Poor quality fuel can cause hard starting, incomplete combustion with varnish buildup,
smoky exhaust, and plugged fuel filters in cold weather. Don't let the above scare you,
there is a far greater list for the problems you can and often will encounter with a
gasoline engine. Remember most of this is for information purposes and to help you get
the maximum life out of a diesel generator.
About Motor Oil
Engine oil has limited life - after a certain point it starts losing lubricating qualities and
carbonizes. Once it happens, the engine gets contaminated with carbon deposits or
sludge that significantly shorten engine's life. When you change oil at or before
manufacturer suggested interval, you change the oil before this "carbonizing" point,
engine remains clean and once refilled with new oil ready to work hard again. If the
engine oil has not been changed for long, carbon deposits start clogging the oil pickup
screen decreasing oil supply and increasing friction. Compression decreases and
engine start wearing much faster. If you don't remember when you changed the oil last
time - just check the oil on the dipstick. And every time you change the oil, the oil filter
AGI6500DE & AGI6500SDE Operator / Owners Manual Version 11.4
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