Safety Precautions; Introduction; The Importance Of Periodic Maintenance; Performing Periodic Maintenance - Yanmar 6LY3 series Service Manual

Safety Precautions

12/05
SAFETY PRECAUTIONS
Before servicing the 6LY3 marine engines, review
the Safety Section on page 2-1.

INTRODUCTION

This section of the Service Manual describes the
procedures for proper care and maintenance of the
engine.
The Importance of Periodic
Maintenance
Engine deterioration and wear occurs in proportion
to the length of time the engine has been in service
and the conditions the engine is subjected to during
operation. Periodic maintenance prevents
unexpected downtime, reduces the number of
accidents due to poor machine performance and
helps extend the life of the engine.

Performing Periodic Maintenance

Perform periodic maintenance procedures in an
open, level area free from traffic. If possible,
perform the procedures indoors to prevent
environmental conditions such as rain, wind or
snow from damaging the engine. DANGER!
NEVER block windows, vents or other means of
ventilation if the engine is operating in an
enclosed area. All internal combustion engines
create carbon monoxide gas during operation.
Accumulation of this gas within an enclosure
will cause illness or even death.
6LY3 Service Manual

Yanmar Replacement Parts

Yanmar recommends that using genuine Yanmar
parts when replacement parts are needed.
Genuine replacement parts help ensure long
engine life.

Required EPA Maintenance

It is essential to follow the Periodic Maintenance
Schedule on page 4-4 and Periodic Maintenance
Procedures on page 4-6 to maintain optimum
engine performance and compliance with the
Environmental Protection Agency (EPA) Regulation
Engines.

EPA REQUIREMENTS

The EPA emission regulation is applicable only in
USA.

Inspection and Maintenance

This maintenance must be performed to keep the
emission values of your engine within standard
values during the warranty period. The warranty
period is determined by the age of the engine or the
number of hours of operation.
© 2007 Yanmar Marine International
PERIODIC MAINTENANCE
4-3