Before Lnitial Operation; Supplying Fuel And Bleeding Air In The Fuel System - Yanmar 6LYA-STP Operation Manual

3.2 Before Initial Operation
Prepare for initial operation according to the following procedures :

3.2.1 Supplying Fuel and Bleeding Air in the Fuel System.

DANGER
●Gasoline will catch fire!
Check again before
supplying that you are using
the proper fuel.
●If any fuel is spilled, clean it
off completely.
(1) Supplying Fuel
1) Before supplying fuel, flush the fuel tank
and the fuel system par ts with clean
kerosene or diesel fuel.
2) Supply fuel with no dust and water to the
fuel tank
(2) Bleeding Air in the Fuel System
Bleed air in the fuel system according to the
following procedurs. When there is air in the
fuel system, the fuel injection pump will not
able to do the function.
1) Open the cock on the fuel oil inlet pipe line,
and loosen the air bleeding bolt on the top
of the water/fuel oil separator (optional) by
turning 2~3 times using spanner. When
fuel with no air bubbles come out, tighten
the air bleeding bolt.
2) Loosen the priming pump knob turning
counter-clockwise and repeatedly push the
knob by hand to feed fuel oil to the fuel
filter.
3) Loosen the ball joint bolt on the top of
center of the fuel filter. And relese fuel
from there until fuel with no air bubbles
come out, then tighten the ball joint bolt.
4) Push down the priming pump knob and
turn it clockwise to fasten.
Prining pump
Fuel oil high pressure pipe
_ _
20
Prining pump knob
Ball joint bolt
(The top of center)
Fuel oil filter
Fuel injection pump