YM Series Operation Manual 11
PRODUCT OVERVIEW
YANMAR YM SERIES
FEATURES AND
APPLICATIONS
The YM series are four-stroke swirl
pre-combustion chamber diesel engines
equipped with liquid coolant systems.
The 2YM15 is a 2-cylinder engine and is
naturally aspirated.
The 3YM20 is a 3-cylinder engine and is
naturally aspirated.
The 3YM30E, 3YM30 is a 3-cylinder
engine and is naturally aspirated.
The engines are equipped with a marine
gear or sail drive unit.
These engines are designed for pleasure
craft use and complied with EPA regulation
Tier3 marine from 2009 year.
It is recommended that new vessels be
propped so the engines can operate at 100
to 200 min
-1
above the Maximum Rated
output power engine speed (3700 to 3800)
to allow for some added weight and hull
resistance.
The engine must be able to reach the
Maximum Rated Power engine speed
(3600) under full load at all times.
Failure to do so can lead to reduced vessel
performance, lead to increased smoke
levels and cause permanent damage to
your engine.
The engine must be installed correctly with
coolant lines, exhaust gas lines and
electrical wiring. Any auxiliary equipment
attached to the engine should be easy to
use and accessible for service. To handle
the drive equipment, propulsion systems
(including the propeller) and other inboard
equipment, always observe the
instructions and cautions given in the
operation manuals supplied by the
shipyard and equipment manufacturers.
The YM series engines are designed to be
operated at maximum throttle (3600 min
-1
)
for less than 5% of total engine time (30
minutes out of every 10 hours) and
cruising speed (3400 min
-1
or less).
The laws of some countries may require
hull and engine inspections, depending on
the use, size and cruising area of the boat.
The installation, fitting and surveying of
this engine all require specialized
knowledge and engineering skills. See
Yanmars local subsidiary in your region or
your authorized Yanmar Marine dealer or
distributor.
YM OPM_EN.book 11 ページ ２０１３年６月７日 金曜日 午前１１時１１分
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