ged battery will,
however, freeze above 0 deg. Fahrenheit. The battery will give the best
service if the battery room temperature is kept between 60 deg. and 80 deg.
Fahrenheit.

Do not bring any open flame such as a lantern, candle or match near a
battery and do not go near the battery with a lighted cigar, cigarette
or pipe, especially while the battery is charging. Hydrogen and oxygen
gases form a highly explosive mixture. An explosion will not only
injure the battery, but will probably disfigure the one carrying the
light, or even destroy his eyes.

It is a good plan to keep the windows of the battery room open as much
as possible.

Engine. The engine which drives the generator requires attention
occasionally. Wipe off all dirt, oil or grease. Keep the engine well
lubricated with a good oil. If grease cups are used, give these
several turns whenever the engine is run to charge the battery. Use
clean fuel, straining it, if necessary, through a clean cloth or
chamois, if there is any dirt in it. The cooling water should also be
clean, and in winter a non-freezing preparation should be added to it.
Do not change the carburetor setting whenever the engine does not act
properly. First look over the ignition system and spark plug for
trouble, and also make sure that the carburetor is receiving fuel. If
possible, overhaul the engine once a year to clean out the carbon,
tighten bearings and flywheel, remove leaky gaskets, and so on.

Generator. Keep the outside of the generator clean by wiping it
occasionally with an oiled rag. See that there is enough lubricating
oil in the bearings, but that there is not too much oil, especially in
the bearing at the commutator end of the generator. Keep the
commutator clean. If it is dirty, wipe it with a rag moistened
slightly with kerosene. The brushes should be lifted from the
commutator while this is being done. Finish with a dry cloth. If the
commutator is rough it may be made smooth with fine sandpaper held
against it while the generator is running, and the brushes are lifted.

The surfaces of the brushes that bear on the commutator should be
inspected to see that they are clean, and that the entire surfaces
make contact with the commutator. The parts that are making contact
will look smooth and polished, while other parts will have a dull,
rough appearance. If the brush contact surfaces are dirty or all parts
do not touch the commutator, draw a piece of fine sandpaper back a