Northern Lights L6125 — Operating
Operation · Engine
For the Northern Lights L6125, from the Northern Lights operator's manual.
Applies to: Northern Lights L6125, Northern Lights L6125H engine
Before you start
- Shut down engine if water temperature rises above 200°F (94°C).
Procedure
- Check oil pressure as soon as engine starts; it should be above 15 PSI.
- Check voltmeter; it should read 26-28 volts at 60°F (16°C).
- Water temperature should not rise over 200°F (94°C); shut down and investigate if it does.
- Do not exceed 800 RPM when shifting marine gear.
- Low idle is 650 RPM.
- Maximum working speed is 2100 RPM High Output, 1900 RPM Medium Duty, or 1800 RPM Continuous Duty.
- Establish maximum cruising RPM by subtracting 200-300 RPM from full-throttle RPM.
Specs & values
- Oil pressure above 15 PSI
- Voltmeter 26-28 volts at 60°F (16°C)
- Water temperature not over 200°F (94°C)
- Do not exceed 800 RPM when shifting
- Low idle 650 RPM
- Maximum working speed 2100/1900/1800 RPM by rating
Full service-parts list: Northern Lights L6125 →
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.