Glow Plugs; Booster Batteries; Battery Care; Pto Care - Northern Lights M843NW3 Operator's Manual

installing the battery.
3. If welding on the unit, disconnect the regulator and
battery. Isolate the leads.
4. Disconnect the battery cables when servicing the
D.C. alternator.
5. Never test with a screwdriver, etc., against any
terminal to see if it emits sparks.
6. Do not polarize the alternator or regulator.
7. A D.C. circuit breaker protects your control panel
and wiring harness. It is located in the side of the
generator junction box.GLOW PLUGS
1. Each cylinder is supplied with a glow plug which
serves to heat the combustion chamber.
2. To check the glow plugs, loosen the current
carrying flat wire between the plus-poles of the

glow plugs (

). Connect a D.C. test bulb
Figure 18
between the plus-pole of the battery and the
plus-pole of the glow plug. If the bulb lights up,
the glow plug is functioning properly.
3. Check all glow plugs and replace any faulty ones.
Figure 18: Glow plugs.

BOOSTER BATTERIES

CAUTION: Battery gas can explode.
Keep all flames and sparks away from batteries.
1. Before changing or using booster batteries, check bat-
tery electrolyte level. Add distilled water if necessary.
2. Booster and main batteries must have the same
voltage rating.
3. First, connect positive (+) terminal of booster bat-
tery to positive (+) terminal of main battery. Then,
connect negative (-) terminal of booster battery to
ground on the engine block (
4. Remove booster battery after starting engine.
5. Sealed batteries: See manufacturer charging and
booster instructions.
revised 11-8-13
Servicing
).
see Figure 19
OM843NW3 11/13
23
Figure 19:
Battery connections.
SP 18-19. BATTERY CARE
1. Check electrolyte level daily. Add distilled water to
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 corrosion.
3. Check the battery condition with a hydrometer every
250 hours.
SP20. P.T.O.
1. The electric clutch P.T.O. does not have any
scheduled maintenance points. However, the
equipment the P.T.O. powers may require
maintenance. Consult the manufacturer of the
driven equipment.
SP21. WINTERIZING / OUT-OF-SERVICE
1. Marine sets:
a. Drain fresh water and seawater cooling systems
completely. Remember to shut off seacocks
before opening drain cocks.
b. Drain water supply lines and wet exhaust line.
c. Loosen the seawater pump cover and drain pump.
d. Change the crankcase oil and filter.
e. Loosen the alternator belt.
f. Disconnect and clean battery. Remove to warm
storage place if possible.
g. Clean outside of unit. Paint any scratched or
chipped surfaces. Put corrosion preventative on
all exposed metal surfaces.