Northern Lights NL844 / NL844W3 — Bleeding the Fuel System
Maintenance
For the Northern Lights NL844 / NL844W3, from the Northern Lights owner's manual.
Applies to: Northern Lights NL844, Northern Lights NL844W3, Northern Lights 844L engine
Before you start
- Escaping diesel fuel under pressure can penetrate skin causing serious personal injury.
- Use cardboard or wood, not hands, to search for suspected leaks.
Procedure
- Loosen bleed bolt A on top of the filter.
- Pump hand primer B on fuel lift pump until pure fuel with no bubbles escapes.
- Tighten bleed screw A.
- Loosen bleed screw C; pump hand primer until pure fuel escapes, then tighten.
- If engine does not start, loosen a fuel line at injector and crank until pure fuel escapes; tighten.
- Do each line one at a time.
- 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 NL844 →, Northern Lights NL844W3 →
Source: Northern Lights owner'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.