John Deere — Replacing Fuel Filter/Water Separator (Single Rail Fuel System)
Maintenance · Fuel filter/water separator assembly
From a John Deere service manual — check it applies to your exact model before use.
Browse John Deere generators & specs →
Before you start
- If engine has been running, engine and fuel filter housing may be hot.
Procedure
- Close fuel shut-off valve (if equipped).
- Clean entire area surrounding fuel filter assembly.
- Remove cap from fuel filter housing.
- Relieve vacuum by operating hand primer until fuel filter pops up (about 30 strokes).
- Lift filter element until filter seal clears inlet tube and drain fuel from filter.
- Rotate filter from housing until completely upside down; place in diesel fuel container.
- Disconnect water-in-fuel sensor; drain and remove separator bowl with strap wrench.
- Install separator bowl hand tight until seal contacts; tighten to 6 N·m (55 lb-in); connect sensor.
- Check fuel level in housing is between MIN and MAX marks.
- Insert new (dry) fuel filter into filter housing.
- Reinstall filter cap hand tight and tighten to 11 N·m (100 lb-in).
- Open shut-off valve and run engine 5 minutes minimum at slow idle.
Tools required
- Strap wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Water Separator Bowl-to-Filter Housing—Torque 6 N·m (55 lb-in)
- Fuel Filter Cap/Cover-to-Housing—Torque 11 N·m (100 lb-in)
Source: John Deere service 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.