TM 9-3431-254-14&P
IMPORTANT
READ THESE INSTRUCTIONS CAREFULLY
All points of operation and maintenance have been covered as carefully as pos-
s i b l e but if further information is required, inquiries sent to the factory will
receive prompt attention.
When writing the factory ALWAYS GIVE THE MODEL, SPECIFICATION AND
SERIAL NUMBER of engine referred to.
STARTING AND OPERATING OF NEW ENGINES
Careful breaking in of a new engine will greatly increase its life and result in
t r o u b l e - f r e e operation. A factory test is not sufficient to establish the polished
bearing surfaces, which are so necessary to the proper performance and long life
of an engine. Neither is there a quick way to force the establishment of good bear-
ing surfaces. These can only be obtained by running a new engine carefully and
under reduced speeds and loads for a short time, as follows:
First, be sure the engine is filled to the proper level with a good quality of engine
oil, see "Grade of Oil" chart.
Before a new engine is put to its regular work, the engine should be operated at
low idle speed (1000 to 1200 R.P.M.) for one half hour, without load. The R.P.M.
should
then
be
increased
to
engine
operating
speed,
still,
without
load,
for
an
additional two hours.
If at all possible, operate the engine at light loads, for a period totaling about
eight hours, before maximum load is applied. This will greatly increase engine
life.
T h e various bearing surfaces in a new engine have not been glazed, as they will
be with continued operation, and it is in this period of
"running
in,"
that
special
care must be exercised, otherwise the highly desired glaze will never be obtained.
A new bearing surface that has once been damaged by carelessness will be ruined
forever.
Our engine warranty is printed on the inside back cover of this m a n u a l . Read it
carefully.
For Your Own Record
MODEL. . . . . . . . . . . . . . . . . . . . . . ENGINE
THIS MANUAL IS FOR MY
SPEC. NO. . . . . . . . . . . . . . . . . . . SERIAL No. . . . . . . . . . . . . . . .
ABOVE
FOUND
ON THE
THE
INFORMATION,
WHICH
WILL BE
INSTRUCTION PLATE ATTACHED TO THE
AIR SHROUD OF THE
SHOULD BE FILLED IN.
ENGINE,
Y O U R PROMPT ATTENTION TO
THIS MATTER WILL MAKE IT CONVENIENT FOR YOU IN THE FUTURE,
AS THIS INFORMATION MUST BE GIVEN WHEN ORDERING ENGINE
R E P A I R PARTS.
