Safety Precautions; Introduction; The Importance Of Periodic Maintenance; Performing Periodic Maintenance - Yanmar BY Series Service Manual

Safety Precautions

12/05

SAFETY PRECAUTIONS

Before servicing the BY2 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 length of time the engine has been in service and
the conditions the engine is subject 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. WARNING!
Exhaust Hazard. 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 could cause illness or even
death.

Yanmar Replacement Parts

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

Required EPA Maintenance

To maintain optimum engine performance and
compliance with the Environmental Protection
Agency (EPA) Regulation Engines, it is essential
that you follow the Periodic Maintenance Schedule
on page 4-5 and Periodic Maintenance Procedures
on page 4-9.
BY Service Manual

EPA REQUIREMENTS

The EPA emission regulation is applicable only in
USA.
Conditions to Ensure Compliance
with EPA Emission Standards
This product is an EPA-approved engine.
The following are the conditions that must be met in
order to ensure that the emissions during operation
meet the EPA standards:
• Ambient temperature: -16° to +40°C (3° to 104°F)
• Relative humidity: 80% or lower
The fuel and lubricating oil used should be as
follows:
• Diesel fuel: ASTM D975 No. 1-D or No. 2-D, or
equivalent (minimum cetane No. 45)
• Lubricating oil: Type API, Class SM, SL, SJ, SH /
CF and CF
Be sure to perform inspections as outlined in
Periodic Maintenance Procedures on page 4-9 and
keep a record of the results.
Pay particular attention to these important points:
• Replacing the engine oil
• Replacing the lube oil filter
• Replacing the fuel filter
• Replacing the air filter
Note: Inspections are divided into two sections
in accordance with who is responsible for
performing the inspection: the user or the
maker.
© 2009 Yanmar Marine International
PERIODIC MAINTENANCE
4-3