Yanmar 6LY3 series Service Manual

PERIODIC MAINTENANCE
Periodic Maintenance Procedures
4-10 6LY3 Service Manual
© 2007 Yanmar Marine International
Be sure to check the following every
50 hours or monthly, whichever comes first.
• Drain the Fuel Filter and Fuel Filter / Water
Separator
• Check the Battery Electrolyte Level
• Adjust the V-Belt Tension or Replace V-Belt
Drain the Fuel Filter and Fuel Filter / Water
Separator
Drain the Fuel Filter
1. Close the fuel cock of the tank.
2. Loosen the drain plug (Figure 4-5, (1)). Drain
off any water and dirt collected inside.
Figure 4-5
Figure 4-5
1 – Drain Plug
Drain the Fuel / Water Separator (Optional)
1. Close the fuel cock at fuel tank.
2. Loosen the drain plug (Figure 4-6, (5)) at the
bottom of the fuel / water separator and drain
off any water and dirt. NOTICE: If nothing drips
when the drain plug is opened, loosen the air
bleed bolt (Figure 4-6, (1)) on the top of the
fuel / water separator by turning
counterclockwise 2 to 3 turns. After draining, be
sure to tighten the air bleed bolt. (Air may bleed
back into the system because the
fuel / water separator position is higher than the
fuel level in the fuel tank.)
Figure 4-6
Figure 4-6
1 – Air Bleed Bolt
2 – Seal
3–Element
4 – Center Bolt
5 – Drain Plug
3. Remove the center bolt (Figure 4-6, (4)) to
disassemble the fuel / water separator. Clean
the element (Figure 4-6, (3)) with clean fuel.
4. When an additional fuel filter or fuel / water
separator is provided on the hull, drain, clean or
replace the element in it as well.
5. After reassembly of the fuel / water separator,
be sure to bleed air from the fuel system.
Every 50 Hours of Operation
0006162
(1)
0006163
(1)
(2)
(3)
(4)
(5)

Yanmar 6LY3 series Specifications

General

Brand	Yanmar
Model	6LY3 series
Category	Engine
Language	English