Inspection Every 250 Hrs. Or 1 Yr; Replacing The Fuel Filter - Yanmar 4HLA-HTP Manual Del Usuario

5.2.3 Inspection Every 250 Hrs. or 1 yr.

(1) Replacing the Fuel Filter

1) 4LHA-HTP/-HTZP
①Close the fuel cock of the fuel tank.
②Drain the fuel from the fuel drain cock at the
bottom of fuel filter. See. 5.2.2(3)
③Remove the connectors of the wiring and
remove the alarm switch using spanner.
④Remove the fuel filter using filter wrench.
⑤Tighten the new fuel filter. (Clean the fuel filter
mounting surface).
Part No. of the fuel filter : 121857 - 55710
Install the alarm switch to the new fuel filter.
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Apply fuel to the gasket of the new fuel filter.
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Lightly screw in the fuel filter in position and tighten it until the gasket comes into contact
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with the seat.
Manually tighten the filter by a 3/4 turn.
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[tightening torque: 14.7~19.6N . m(1.5~2.0 kgf . m)]
Connect the alarm switch wiring.
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⑥Fill fuel to the fuel filter. (see 3.2.2)
If you spill fuel, wipe such spillage carefully.
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Start the engine to check for fuel leakage.
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2) 4LHA-DTP/-DTZP/-STP/-STZP
Replace the fuel filter element periodically before
there is clogging and the fuel flow is reduced.
①Close the fuel cock of the fuel tank.
②Remove the drain plug and discharge the fuel
oil in the fuel fiiter. (put a pan under the drain
to catch the fuel)
③Loosen center bolt of the filter, remove the
lower case, and replace the element.
Part No. of the fuel filter element : 41650-
550800
④Fill fuel to the fuel filter (See 3.2.2)
If you spill fuel, wipe such spillage carefully.
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Start the engine to check for fuel leakage.
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Rubber packing
_ _
48
Fuel filter
Loose
tighten
Alarm switch
Fuel filter
Center bolt
Element
Center bolt