Northern Lights M753 / M753W2 — Bleeding the Fuel System
Maintenance
For the Northern Lights M753 / M753W2, from the Northern Lights operator's manual.
Applies to: Northern Lights M753, Northern Lights M753W2
Before you start
- Escaping diesel fuel under pressure can penetrate skin; relieve pressure before disconnecting lines.
- Use cardboard or wood, not hands, to search for leaks.
Procedure
- Fuel system is self-bleeding; manual bleeding may be needed after new filter, running out of fuel, or fuel system service.
- Loosen bleed bolt A on top of 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 B until pure fuel escapes; tighten bleed screw C.
- If engine does not start, loosen one fuel line at an injector while cranking until pure fuel escapes; tighten. Do each line one at a time.
- After start, use cardboard to check for fuel leaks.
Tools required
- Hand primer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Northern Lights M753 →, Northern Lights M753W2 →
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.