MAINTENANCE
800D MM308 (11–95)
68
WATER SEPARATOR/FUEL FILTER
The water separator/fuel filter filters impurities
from the fuel and seperates any water from the
fuel system. It is located on the left side of the
engine compartment. Water can be drained from
the drain cock at the bottom as needed.
Replace the water separator/fuel filter element
every 400 hours of operation.
ENGINE FUEL FILTER
The engine fuel filter filters impurities from the
fuel. It is located on the left side of the engine.
Replace the engine fuel filter element every 400
hours of operation.
FUEL LINES
Check the fuel lines for wear and leaks every 50
hours of operation.
For older style fuel lines made of rubber, the fuel
lines become worn out whether the engine has
been used much or not. Replace the fuel lines
every two years. If the fuel lines are found worn or
damaged before two years’ time, replace or repair
them at once.
Bleed the fuel system after replacement of any of
the fuel lines, see TO PRIME THE FUEL
SYSTEM. When the fuel lines are not installed,
plug both ends with clean cloth or paper to
prevent dirt from entering the lines. Dirt in the
lines can cause fuel injection pump malfunction.
PRIMING FUEL SYSTEM
Priming the fuel system removes pockets of air in
the fuel lines and fuel components. Air in the fuel
system will prevent smooth engine operation.
Prime the fuel system after running out of fuel,
disconnecting the low pressure fuel lines, or any
part of the low pressure fuel system leaks during
engine operation.
TO PRIME FUEL SYSTEM
1. Stop the engine and set the machine parking
brake.
FOR SAFETY: Before leaving or servicing
machine; stop on level surface, set parking
brake, and turn off machine.
