Northern Lights — Bleeding at the Fuel Injection Pump
Maintenance
From a Northern Lights owner's manual covering: NL445D, NL445D1, NL445T1, NL445T2, NL668T2. Check it applies to your exact model before use.
Applies to: Northern Lights NL445D1, Northern Lights NL445T1, Northern Lights NL445T2, Northern Lights NL668T2, John Deere 4045D150 / 4045T150 / 4045T250 / 6068T250 engine
Procedure
- Slightly loosen the fuel return line connector at the fuel injection pump.
- Operate the fuel supply pump primer lever until fuel without air bubbles flows from the fuel return line connection.
- Tighten the return line connector to 16 Nm (12 lb-ft).
- Leave the hand primer in the inward position toward the cylinder block.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Return line connector torque 16 Nm (12 lb-ft)
Full service-parts list: Northern Lights NL445D1 →, Northern Lights NL445T1 →, Northern Lights NL445T2 →, Northern Lights NL668T2 →, John Deere 4045D150 / 4045T150 / 4045T250 / 6068T250 engine →
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.