Northern Lights M864 / OM864W — Bleeding the Fuel System
Maintenance
For the Northern Lights M864 / OM864W, from the Northern Lights operator's manual.
Applies to: Northern Lights M864
Before you start
- Escaping diesel fuel under pressure can penetrate skin causing serious personal injury; relieve pressure before disconnecting lines.
- If injured by escaping fuel, see a doctor at once.
Procedure
- The fuel system is self-bleeding but may need manual bleeding after filter change, running out of fuel, or component removal/installation.
- Loosen the bleed nipple on top of the fuel filter.
- Pump the hand primer on the fuel lift pump until pure fuel (no bubbles) escapes from the bleed nipple; tighten the nipple.
- If the engine does not start, loosen a fuel line at the injector while cranking 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
- Cardboard or wood (for leak check) Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Northern Lights M864 →
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.