Running-In (Breaking-In) - O.S. engine MAX FXi 46 Owner's Instruction Manual

5. Open the throttle approx. one-quarter.
6. Connect battery leads to glow plug.
7. Bring electric starter into contact with
spinner-nut or spinner and depress
starter switch for one or two seconds.
Repeat if necessary. When the engine
starts, withdraw the starter immediately.
Attention: Do not choke the carburetor air
intake when applying the starter. This could
cause an excessive amount of fuel to be
drawn into the cylinder which may initiate an
hydraulic lock and damage the engine.
If the engine does not start within 10 repeat
applications of the starter, remove the glow
plug, check that it glows brightly and that the
cylinder is not flooded with fuel. (To eject
excess fuel, close needle valve and apply
starter with glow plug removed.) Then try again.
VERY IMPORTANT! Before being operated
at full power (i.e. at full throttle and with the
needle-valve closed to its optimum setting)
the engine must be adequately run-in,
otherwise there is a danger of it becoming
overheated and damaged.
RUNNING-IN ("Breaking-In")
All internal-combustion engines benefit
from extra care when they are run for the
first few times known as running-in or
breaking-in.
This allows the working parts to mate together
under load at
Therefore, it is vitally important to complete the
break-in before allowing the engine to run
continuously at high speed and before
finalizing carburetor adjustments.
However, because O.S. engines are
produced with the aid of the finest modern
precision machinery and from the best and
most suitable materials, only a short and
simple running-in procedure is called for
and can be carried out with the engine
15
operating temperature.