Every 50 Hours Of Operation - Yanmar JH Series Operation Manual

Every 50 Hours of Operation

Perform the following procedures every 50
hours thereafter or monthly, whichever
comes first.
• Draining Fuel Filter/Water Separator
• Checking Battery Electrolyte Level
(Serviceable Batteries Only)
Draining Fuel Filter/Water Separator
WARNING
Fire and Explosion Hazard
When removing any fuel system
component to perform maintenance
(such as changing the fuel filter), put an
approved container under the opening
to catch the fuel.
Never use a shop rag to catch the fuel.
Vapors from the rag are flammable and
explosive. Wipe up any spills
immediately.
Exposure Hazard
Wear eye protection. The fuel system is
under pressure and fuel could spray
out when removing any fuel system
component.
JH Series Operation Manual
PERIODIC MAINTENANCE
Figure 4
Figure 11
1 – Filter element
2 – Drain plug
3 – Cover (fire-resistant)
4 – Clamp screw
If the fuel filter/water separator is
positioned higher than the fuel level in the
fuel tank, water may not drip out when the
fuel filter/water separator drain cock is
opened. If this happens, turn the air vent
screw on the top of the fuel filter/water
separator two to three turns
counterclockwise. Be sure to tighten the air
vent screw after the water has drained out.
1. Close the fuel tank cock.
2. Loosen the clamp screw and remove
the fire-resistant cover, which is
installed to the lower part of the fuel
filter/water separator to protect the
water alarm switch.
3. Attach a tube to the drain plug.
4. Loosen the drain plug (Figure 11, (2))
at the bottom of the fuel filter/water
separator by turning counterclockwise
and drain off any water or sediment.
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