Glow Plugs; Booster Batteries; Battery Care; Pto Care - Northern Lights OM844W3 Operator's Manual

For models: m844w3; m844lw3; m20crw3
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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 fl at wire between the plus-poles of the
glow plugs (
). Connect a D.C. test bulb
Figure 19
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 19: Glow plugs.

BOOSTER BATTERIES

CAUTION: Battery gas can explode.
Keep all fl ames and sparks away from batteries.
1. Before changing or using booster batteries, check battery
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 battery
to positive (+) terminal of main battery. Then, connect
negative (-) terminal of booster battery to ground on
the engine block (
see Figure 20
4. Remove booster battery after starting engine.
5. Sealed batteries: See manufacturer charging and
booster instructions.
Figure 20:
Battery connections.
Servicing
).
OM844W3 5/11
23
SP 18-19. BATTERY CARE
1. Check electrolyte level every 50 hours or once per
month. 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 fi lter.
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.

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