Battery Care; Winterizing / Out-Of-Service - Northern Lights OM944W3 Operator's Manual

SP-19 and 20. BATTERY CARE
1. Check the electrolyte level every 50 hours, or once
a month. Add distilled water to the manufacturer's
recommended level.
2. Batteries, cables, and cable terminals should be
checked and cleaned every 100 hours. Clean
corrosion with a water and baking soda solution.
Flush with clean water. Tighten terminals and grease
them to inhibit future corrosion.
3. Check the battery condition with a hydrometer every
500 hours.
SP-21. WINTERIZING / OUT-OF-SERVICE
NOTE: Remember to close the sea-cock before
opening drain cocks.
For engines not going to be used for more than 3
months:
1. Change the crankcase oil and filter. Fill with rust
preventative oil, and make a mixture of rust
preventative oil and fuel 1:1 and fill the fuel tank
with the mixture. Start the engine and operate it
with no load for 5 to 10 minutes. Stop the engine,
spray rust preventative agent into intake pipe. Drain
the rust preventative oil and fuel.
2. Drain fresh water and seawater cooling systems
completely. Flush fresh water systems and refill with
the proper antifreeze mixture.
3. Drain the water supply lines and wet exhaust line.
Cover the intake and exhaust ports with adhesive
fabric tape.
4. Loosen the seawater pump cover and drain the
pump.
5. Loosen the alternator belt.
Updated 1-6-23
Servicing
6. Cover the terminals and openings of the
starter and alternator with adhesive fabric
tape. Cover the starter and alternator with
polyethylene sheets and put desiccant inside
covering.
7. Disconnect and clean the battery. Remove the
battery to a cool dry storage place, if possible.
8. Clean the outside of the unit. Paint any
scratched or chipped surfaces. Put corrosion
preventative on all exposed metal surfaces.
9. Cover the engine.
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