ENGINE OPERATION
JH Series Operation Manual
65
After the Engine has Started
After the engine has started, check the
following items at a low engine speed:
1. Check that the gauges, indicators and
alarm are normal.
• Normal coolant operating temperature
is approximately 76° to 90 °C (169° to
194 °F).
• Normal oil pressure at 3000 min
-1
is
0.28 to 0.54 MPa (41 to 78 psi).
2. Check for water, fuel or oil leakage from
the engine.
3. Check that the smoke color, engine
vibration and sound are normal.
4. When there are no problems, keep the
engine at low speed with the boat still
stopped to distribute engine oil to all
parts of the engine.
5. Check that sufficient seawater is
discharged from the seawater outlet.
Operation with inadequate seawater
discharge will damage the impeller of
the seawater pump. If seawater
discharge is too low, stop the engine
immediately. Identify the cause and
repair.
NOTICE
The engine will seize if it is operated
when seawater discharge is too small or
if load is applied without any warming up
operation.
For troubleshooting assistance, see
TROUBLESHOOTING AFTER
STARTING on page 135
or
TROUBLESHOOTING CHART on page
137
. If necessary, consult authorized
YANMAR dealer or distributor.
REMOTE CONTROL
HANDLE OPERATION
Acceleration and Deceleration
Figure 2
1 – FORWARD or REVERSE
2 – NEUTRAL
3 – REVERSE or FORWARD
4 – Throttle Handle/Shifting Handle
Note: Direction of travel will vary
depending on installation location.
Use the throttle handle
(Figure 2, (4))
to
control acceleration and deceleration.
Move the handle slowly.
Shifting the Engine
WARNING
Sudden Movement Hazard
The boat will start to move when the
marine gear is engaged:
• Ensure the boat is clear of all
obstacles forward and aft.
• Quickly shift to the FORWARD
position then back to the NEUTRAL
position.
• Observe whether the boat moves in
the direction you expect.
K0004513
1
2
4
3
3JH40_4JH45_4JH57_4JH80_4JH110_EN_OPM.book 65 ページ ２０２２年９月２２日 木曜日 午後６時１７分
