Yanmar 6LT Series User Manual

ENGINE OPERATION
6LT Series Operation Manual
33
If the Engine Fails to Start
Before pressing the Start switch again, confirm that
the engine has stopped completely. If the starter
motor is operated before the engine has completely
stopped, the starter motor pinion gear will be
damaged.
NOTICE
Starter should not be operated for more than
15 seconds at a time. After this wait at least
15 seconds before operating starter again. If the
engine does not start the first time, wait for about
15 seconds before trying again.
NOTICE
If the engine’s exhaust system is equipped with a
water lift (water lock) muffler, excessive cranking
could cause seawater to enter the cylinders and
damage the engine. If the engine does not start
after cranking 15 seconds, close the thru-hull water
intake valve to avoid filling the muffler with water.
Crank for 15 seconds or until the engine starts.
When the engine does start, stop the engine
immediately by pressing the stop switch. Be sure to
re-open the seacock and restart the engine.
Operate the engine normally.
After the Engine has Started
After the engine has started, check the following
items at a low engine speed:
1. Check that the indicators on the display and the
control head are normal.
2. Check for water or oil leakage from the engine.
3. Check that exhaust color, engine vibrations,
and sound are normal.
4. When there are no problems, keep the engine
at low speed to send engine oil to all parts of
the engine.
5. Check that sufficient seawater is discharged
from the seawater outlet pipe. Operation with
inadequate seawater discharge will damage the
impeller of the seawater pump. If seawater
discharge is too small, stop the engine
immediately. Identify the cause and repair.
• Is the seacock open?
• Is the inlet of the seacock on the hull bottom
clogged?
• Is the seawater suction hose broken, or does
the hose suck in air due to a loose joint?
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.
WARM UP MODE
(SHIFT DISCONNECT)
1. Move the control head handle to the N (Neutral)
position. (The NEUTRAL lamp will come on)
2. Press the “NTRL” switch of the selected station
control head.
3. The NEUTRAL lamp will come on, and the
NEUTRAL lamp will flash.
4. Move the Throttle Handle. The engine speed
can be controlled while the gear shift is in
neutral.
5. Move the control head handle to the N (Neutral)
position, press the “NTRL” switch and cancel
warm up mode.
Figure 5
PORT NEUTRAL STBD NEUTRAL
SYNC
SEL
TROL
NTRL
Control head panel

Yanmar 6LT Series Specifications

General

Brand	Yanmar
Model	6LT Series
Category	Engine
Language	English