OWNERS MANUAL
or lower. Start charging at four amperes and finish at two
amperes; do not allow battery temperature to rise above
1200F during recharging. Keep the battery at full charge
to prevent freezing in cold weather and to prolong service
life.
If appreciable corrosion
is
noticed, flush the battery box
with a solution of baking soda and water. Do not allow soda
solution to enter the battery cells. Keep cable connections
clean and tightly fastened, and keep overflow lines free of
obstruction.
MAINTENANCE
PROPELLER
CARE
The high stress to which propeller blades are
subjected
makes their careful inspection and maintenance vitally
im-
portant. Check the blades for nicks, cracks, or indications
of other damage before each flight. Nicks tend to cause
high- stress concentrations in the blades which,
if
ignored,
may result in cracks. Remove any nicks deeper than ap-
proximately
.,010
inch before the' next flight.
It is not unusual for the propellerto have some end-play as
a result of manufacturing tolerances in the parts. This end
play has no adverse affect on propeller 'performance, be-
cause centrifugal force firmly seats the blades when in op-
eration.
EXTERIOR
CARE
As with any paint applied to a metal surface, an 'initial cur-
ing
periodis necessary for developing the desired qualities
of durability and appearance. Therefore, do not apply wax
or polish to the new aircraft exterior until two or three
months after delivery.
Wax
substances will: seal paint from
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