Weifang 495 - Operating the Engine

l.tp, release the decompressor ~ever, the engine will be a~le to be
started" If the erlgine still fails to srart afte releasing thedecom-
pressor lever, paus.e for 1- 2 minutes and preheatagain~If it still
fails to start aft~r 3 attempts, check the cause and remedy the
fault.
5)After the engine has been started,payclose attention to ob-
Serve whether it is running normally and whether the reading of
, ,
every gauge is correct. If there is no oil-pressure or other abnormal
condition occurs ,stop the engine, check the cause and" remedy the
fault, It is not permitt"ed to go on operating the abnormal engine.
4. Operating The Engine
1) After being started, the engine' should be' 'warmed up with
,the medium speeds (incresing the speed gradually from 600- 700
,rpm" up to 1000-1200 rpm). Aviod to run a cold engine at idling
speed for a long period of time. The engine can be operated at max-
'imum speed and full load only after its cooling water temperature
has reached above 60°C.
2) Engine sfJeed and load" should be increased or" decreased
gradually. Aviod to load unload or to speed -up and speed -down
the'e,ngine rapidly.
3)V{hen the e!lgine operating at full load, it is best to main-
tainedthe temperature of the 'cooling water within 80- 90°C. The
wear of the cylinder liners will speed up if the engine often operat-
ing with the water temperature below 70°C. The temperature. of
the lubricating oil should not exceed 95°C in general.
4) While the engine is running, paY' attention 'frequ@ntly to the
oil 'pressure ,oil and water 'temperature and the charging current,
etc.·, the readings of the gauges must be within, the specified lim-
i'ts ;'observe the colour of the exhaust smoke and 'listen attentively