Required Epa Maintenance Usa Only; Epa Requirements Usa Only; Epa Requirements; Conditions To Ensure Compliance With Epa Emission Standards - Yanmar 6SY Series Operation Manual

PERIODIC MAINTENANCE
Required EPA Maintenance
USA Only
To maintain optimum engine performance
and compliance with the Environmental
Protection Agency (EPA) Regulations
Engines, it is essential that you follow the
Periodic Maintenance Schedule on
page 78 and Periodic Maintenance
Procedures which start on page 81.

EPA Requirements

USA Only
The following are the installation
requirements for the EPA. Unless these
requirements are met, the exhaust gas
emissions will not be within the limits
specified by the EPA.
Maximum exhaust gas restriction shall be
5.88 kPa; 600 mmAq (0.85 psi) or less.
Maximum air intake restriction shall be
6.23 kPa; 635 mmAq (0.90 psi) or less.
Clean or replace the air cleaner element if
the air intake restriction exceeds the above
mentioned value.
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. Be sure to follow these:
The operating conditions should be as
follows:
76
• Ambient temperature: -20° - 40°C
(-4° - 104°F)
• Relative humidity: 80% or lower
• Permissible value for intake negative
pressure: 3.9 kPa (400 mmAq) or lower
• Permissible value for exhaust back
pressure: 19.6 kPa (2000 mmAq) or
lower
The fuel and lubricating oil used should be
as follows:
• Diesel fuel oil: ASTM D975 No. 1-D or
No. 2-D, or equivalent (minimum of
cetane No. 45)
• Lubricating oil: Type API, Class CD
Be sure to perform inspections as outlined
in Periodic Maintenance Procedures on
page 81 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
• Cleaning the intake silencer (air cleaner)
Note: Inspections are divided into two
sections in accordance with who
is responsible for performing the
inspection: the user or the
maker.
6SY Operation Manual