Cautions During Operation - Yanmar JH Series Operation Manual

3. Before returning to normal operation,
be sure to put the trolling handle in
high-speed (H) position.
4. Increase engine speed and continue
normal operation.
JH Series Operation Manual
ENGINE OPERATION
CAUTIONS DURING
OPERATION
Engine trouble can arise if the engine is
operated for a long time under overloaded
conditions with the control handle in the full
throttle position (maximum engine speed
position), exceeding the continuous rated
output engine speed. Operate the engine
-1
at about 100 min
throttle engine speed.
Note: If the engine is in the first 50 hours of
operation, see New Engine Break-In
on page 12.
Always be on the lookout for problems
during engine operation.
Pay particular attention to the following:
• Is sufficient seawater being discharged
from the exhaust and seawater outlet
pipe?
If the discharge is small, stop the engine
immediately; identify the cause and
repair.
• Is the smoke color normal?
The continuous emission of black
exhaust smoke indicates engine
overloading. This shortens the engines
life and should be avoided.
lower than the full
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