Mitsubushi — Do not give shock to the end of the nozzle

For these Mitsubushi models: General Duty Engine, S12A2.

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Procedure

1. 1. Secure the fuel injection nozzle using a vice.
2. 2. Remove the cap nut and loosen the adjusting
3. screw using a screw driver.
4. Notice: This operation is required to release
5. spring pressure applied to the nozzle tip.
6. When spring pressure is applied, it is
7. hard to loosen the retaining nut.
8. 3. Remove the retaining nut and take the nozzle
9. tip off.

Source: manual:Mitsubishi S12A Manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.