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PAGE 34 — LT12 SERIES LIGHT TOWER • OPERATION MANUAL — REV. #12 (01/20/09)
MAINTENANCE
REPLACING FUEL FILTER
Set the container under the fi lter cartridge to catch 1.
fuel.
Using a fi lter wrench, turn the fi lter cartridge to the left 2.
to remove it.
Clean the fi lter holder, fi ll the new fi lter cartridge with 3.
fuel, coat the packing surface of the fi lter cartridge
with engine oil, then install the cartridge to the fi lter
holder.
When installing, tighten until the packing surface 4.
contacts the seal surface of the fi lter holder then
tighten a further 2/3 of a turn. If the fi lter cartridge is
tightened too much, the packing will be damaged and
will cause fuel leakage. Fuel leakage will occur if the
fi lter cartridge is not tightened enough. Always tighten
to the correct angle.
Squeeze the fuel primer bulb to pump fuel back into 5.
the engine.
Replace corrosion resistor cartridge (if equipped).6.
Screw in valves at the top of the corrosion resistor.7.
Using a fi lter wrench, turn the cartridge to the left to 8.
remove it.
Coat the seal surface of the new cartridge with engine 9.
oil and install it to the fi lter holder.
Tighten until the packing surface contacts the seal 10.
surface of the fi lter holder, then tighten a further 2/3
of a turn.
Open valves.11.
SERVICING THE MAST RAISE/LOWER CABLE SYSTEM:
To replace any components in the mast raise/lower cable
system, use the following steps (See Figure 21):
Mast Raise/Lower Cable SystemFigure 21.
Lower the mast to the horizontal resting position.1.
Inspect the cable clamps, pulleys, and other components 2.
for worn or damaged parts.
Disconnect the cable from the ball socket pin and 3.
remove from the mast pulley and cable sheave. Detach
the cable from the hand winch as necessary.
Replace the pulley and the cable as needed.4.
Rethread the cable through the pulley and reattach the 5.
cable to the ball socket pin.
Raise and lower the mast several times to verify correct 6.
operation.
SERVICING THE MAST EXTENSION CABLE SYSTEM:
To replace the cable in the mast extension cable system,
use the following steps (See Figure 22):
Mast Extension Cable SystemFigure 22.
CENTER
MAST
PULLEY
ROUTE TO
HAND WINCH
LOWER
MAST
PULLEY
UPPER
MAST
CENTER
MAST
LOWER
MAST
LOWER
MAST
SHACKLE