Yanmar BY Series Service Manual page 16

SAFETY
NEVER wear jewelry, unbuttoned cuffs,
ties or loose-fitting clothing and
ALWAYS tie long hair back when
working near moving / rotating parts
such as the flywheel or PTO shaft. Keep hands,
feet and tools away from all moving parts.
The propeller may rotate during towing or if the
engine is running at idle speed. NEVER service the
engine while being towed or when the engine is
running.
If the vessel has more than one engine, NEVER
service an engine if either of the engines is running.
In multi-engine configurations the propeller for an
engine that is shut down may rotate if any of the
other engines are running.
NEVER operate the engine without the guards in
place.
NEVER operate the engine while wearing a
headset to listen to music or radio because it will be
difficult to hear the warning signals.
Electrical Hazard
Make welding repairs safely.
• ALWAYS turn off the battery switch (if
equipped) or disconnect the negative (-)
battery cable and the leads to the
alternator when welding on the
equipment.
• Remove the multi-pin connector to the engine
control unit. Connect the weld clamp to the
component to be welded and as close as possible
to the welding point.
• NEVER connect the weld clamp to the engine or
in a manner which would allow current to pass
through a mounting bracket.
2-4
Sever Hazard
© 2009 Yanmar Marine International
• When welding is complete, reconnect the leads to
the alternator and engine control unit prior to
reconnecting the batteries.
ALWAYS keep the electrical connectors and
terminals clean. Check the electrical harnesses for
cracks, abrasions and damaged or corroded
connectors.
NEVER turn off the battery switch (if equipped) or
short the battery cables during operation. Damage
to the electrical system will result.
Exhaust Hazard
All internal combustion engines create
carbon monoxide gas during operation
and special precautions are required to
avoid carbon monoxide poisoning.
• NEVER block windows, vents or other means of
ventilation if the engine is operating in an
enclosed area.
• ALWAYS ensure that all connections are
tightened to specifications after repair is made to
the exhaust system.
Burn Hazard
Some of the engine surfaces become
very hot during operation and shortly
after shutdown.
• Keep hands and other body parts away from hot
engine surfaces.
• Handle hot components with heat-resistant
gloves.
Sudden Movement Hazard
To prevent accidental equipment movement,
NEVER start the engine in gear.
Shift the marine gear into the NEUTRAL position
any time the engine is at idle.
BY Service Manual
Safety Precautions