Northern Lights M753 / M753W2 — Heat Exchanger Cleaning

Maintenance

For the Northern Lights M753 / M753W2, from the Northern Lights operator's manual.

Applies to: Northern Lights M753, Northern Lights M753W2

Procedure

1. Clean heat exchanger core once a year or after 2500 hours.
2. Drain expansion tank and heat exchanger.
3. Remove heat exchanger end covers and remove core.
4. Clean inside of core tubes with a metal rod; flush, inspect, and clean again if necessary.
5. Reassemble; fill cooling system, start engine, and check for leaks.

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.

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