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Northern Lights NL844LW2 / NL844W2 — Bleeding the Fuel System

Maintenance

For the Northern Lights NL844LW2 / NL844W2, from the Northern Lights operator's manual.

Applies to: Northern Lights NL844LW2, Northern Lights NL844W2, Northern Lights 844 / 844L engine, Northern Lights 844L engine

Before you start

  • Escaping diesel fuel under pressure can penetrate skin causing serious personal injury.

Procedure

  1. The fuel system is self-bleeding; manual bleeding may be needed after filter change, running out of fuel, or fuel system component removal.
  2. Loosen bleed bolt A on top of the filter.
  3. Pump hand primer B on the fuel lift pump until pure fuel (no bubbles) escapes. Tighten bleed screw A.
  4. Loosen bleed screw C. Pump hand primer B until pure fuel escapes. Tighten bleed screw C.
  5. If engine does not start, loosen a fuel line at the injector and crank until pure fuel escapes. Tighten. Do each line one-at-a-time.
  6. After starting, use a piece of cardboard to look for fuel leaks.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Northern Lights NL844LW2 →, Northern Lights NL844W2 →

Source: Northern Lights 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.

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