Yanmar 6SY Series Operation Manual page 80

PERIODIC MAINTENANCE
CAUTION
Make sure the engine is installed
on a level surface. If a Yanmar
Marine Engine is installed at an
angle that exceeds the
specifications stated in the
Yanmar Marine Installation
manuals, engine oil may enter
the combustion chamber
causing excessive engine speed,
white exhaust smoke and
serious engine damage. This
applies to engines that run
continuously or those that run
for short periods of time.
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CAUTION
New Engine Break In:
• On the initial engine start-up,
check for proper engine oil
pressure, diesel fuel leaks,
engine oil leaks, coolant leaks,
and for proper operation of the
indicators and / or gauges.
• During the first 50 hours of
operation operate your new
engine under a substantial
load at all times. For best
break-in results operate the
engine at various speeds.
• Operating the engine in
NEUTRAL must be avoided.
During the first 50 hours, avoid
operation below 2000 rpm.
• During the break-in period,
carefully observe the engine
oil pressure and engine
temperature.
• During the break-in period,
check the engine oil and
coolant levels frequently.
CAUTION
Be careful not to get any oil on
the belt(s). Oil on the belt causes
slipping and stretching. Replace
the belt if it is damaged.
6SY Operation Manual
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