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Yanmar 4JH4E - Removing a Fuel Injection Pump

Yanmar 4JH4E
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6. Fuel Injection equipment
220
6.1.4 Removing a fuel injection pump
The procedure to remove a fuel injection pump
from the gear case is shown.
[NOTICE]
Be sure to remove a flange and a fuel injection
pump drive gear as a pair without loosening the
flange bolts.
1) Remove fuel injection pipes, fuel pipes and a
remote control wire. Block the entrance with
tape so that trash may not enter the fuel
injection pipes and the fuel injection pump.
2) Mark the position of the timing marks of a fuel
pump and a gear case. Or, put a mark on the
gear case at the position to agree the timing
mark of a fuel pump.
3) Remove a pump cover from the gear case.
4) Give the marks on a fuel injection pump drive
gear and a idle gear with paint or the line.
5) Loosen fuel injection pump installation nuts
(three nuts).
6) Loosen a installation nut of a fuel injection
pump drive gear.
7) Pull a fuel injection pump drive gear and a
flange with a pair to your side by gear puller.
8) Remove a pump drive gear nut and a
washer.
9) Remove a fuel injection pump. Leave the
pump drive gear in the gear case.
Fuel injection pump
Spring washer
Fuel injection
pump drive gear
Pump drive gear nut
Pump flange
Don't disassemble
Pump flange bol
t
010629-01E

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