Page 9
RUNNING-IN
WARNING
• Before starting the engine, make sure that there are no loosened screws or
improperly attached parts;
• Ensure that any persons are at a distance of absolute safety and never in range of the
propeller;
• Do not start the engine where there are rocks or other objects that the force
generated by the propeller can lift and throw even at a considerable distance;
• Do not start the engine without propeller or without exhaust;
• Do not start the engine indoors: the exhaust gases contain poisonous carbon
monoxide which is toxic and can cause loss of consciousness and death. The engine,
before being sold, was subjected to a pre-running-in to verify the proper operation and
a test that confirms all the features advertised.
Once you require a SIMONINI 250, you should pay particular attention to the first hour
of operation, in order to ensure all the engine’s qualities over time.
DURING THE RUNNING-IN PHASE, KEEP PARTICULAR ATTENTION TO THE EXHAUST GAS
TEMPERATURE AND HEAD TEMPERATURE UNDER CONTINUOUS OBSERVATION.
Having selected a suitable place and above all free from gravel or other materials that
may damage the moving parts, start the engine and let it warm up for 10 minutes at
2500 rpm, then slowly bring the engine to a system more high, decreasing and
increasing the speed at intervals of 1 minute, thus going to affect various "range" of
use, but without exceeding the 4500 rpm. Absolutely avoid the constant and repeated
closing/opening the gas valve. After about 20 minutes from start-up, shut down the
engine and let cool completely.
WARNING! When the engine is running and even after its shutdown, it can cause
burns: so make sure it is completely cooled before working on it.
Proceed with a thorough visual inspection of any anomalies or loose parts. Once you
make sure everything is working properly and there are no problems of any kind, you
must repeat the previous operation for another 20 minutes of running, respecting the
same indications.
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