Changes of engine speed
Do not drive at a constant engine speed for a long time. For a better run-in,
increase and decrease the throttle opening frequently. Change engine speed
from time to time to let various engine parts get "bearing" pressure. When the
pressure is "unloaded", the engine parts will cool down, helping the fitting of
different parts. During the running-in period, engine load may be progressively
increased. Apply some load to engine parts to guarantee good fitting. This is
every important, but do not apply excessive load to the engine.
Avoid driving at a low speed
Running at a low engine speed (with light load) can only polish the parts but
cannot get a good running-in. So long as the upper limit of recommended
throttle opening is not exceeded, drive the vehicle in various gears with
necessary acceleration. However, never drive at the maximum throttle during
the first 1600 km.
Make oil circulating before driving
After starting a warm or cold engine and before applying load or driving, let the
engine run at idle speed for an adequate time. This allows lubricant to flow to all
important engine parts, so as to reduce wearing and increase the service life.
This also helps the engine to warm-up sufficiently.
First maintenance inspection
The maintenance at the first 1000 km is the most important. During the
running-in period, all engine parts have been run-in and other parts engaged.
Then, all parts shall be adjusted, all fasteners be tightened, contaminated
engine oil be replaced and filter element be replaced.
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