John Deere — Bleeding Fuel System (Denso HPCR 475)
Maintenance
From a John Deere operator's manual — check it applies to your exact model before use.
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Before you start
- Do not crack any fuel lines to bleed the fuel system.
Procedure
- Loosen air bleed vent screw two turns on fuel filter base.
- Operate fuel supply pump primer lever until fuel flows out.
- Tighten bleed vent screw securely.
- Continue operating primer until pumping action is not felt.
- Start engine and check for leaks.
- If engine will not start, repeat steps 1-4.
Source: John Deere 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.