Cummins/Onan C2750 D5 / QSK60 — Fuel/Water Separator Drain
Maintenance
For the Cummins/Onan C2750 D5 / QSK60, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan C2750 D5, Cummins/Onan DQKAN, Cummins/Onan QSK60, Cummins/Onan QSK60 engine, Cummins/Onan QSK60-G19 engine, Cummins/Onan QSK60-G22 engine
Before you start
- Diesel fuel is a fire and explosion hazard.
- Drained liquids must be disposed of per local environmental regulations.
Procedure
- Shut off the engine.
- Place a suitable container under the fuel filter.
- With the fuel supply valve closed, open the vent cap to break the airlock.
- Turn the valve counterclockwise until it drops about 25 mm (1 in). Drain until clear fuel is visible.
- Push the valve up and turn clockwise to close the drain valve.
- Open the fuel supply valve before starting the engine.
- If more than 60 ml (2 oz) is drained, refill the filter to prevent hard starting.
Tools required
- Suitable container Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Drain one cup or more of fuel
Full service-parts list: Cummins/Onan C2750 D5 →, Cummins/Onan DQKAN →, Cummins/Onan QSK60 →
Source: Cummins/Onan operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.