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3. Attach the wire head (1) by screwing it coun-
terclockwise (viewed from the head).
4. Remove the hexagonal wrench (2).
REPLACING THREAD
1. Turn the stopper knob counterclockwise and
remove it.
2. Remove the empty spool from the thread
head. Keep the spring attached to the spool.
3. Cut up to 2 m of thread to place it on the reel.
4. Hook one of the ends of the nylon in the head
and wind it, make sure that you place the two
threads in the slots opposite each other in the
new reel.
5. Thread the threads through the guides on the
spool.
6. Thread the threads through the eyes in the
thread head. Carefully push the spool on the
thread head (pull the threads out slightly if nec-
essary). When placing the spool on the thread
head, hold the threads and pull them hard to
disengage them from the slots in the spool.
Press and turn the spool counterclockwise until
it stops. Grasp the spool and turn it slightly to
the right. Release the spool. The spool must be
secured in the thread head. Otherwise, hold it
and turn it until it engages.
Make sure that the thread head and the spool
retainer are installed on the drive shaft.
Pull the threads again to rotate the spool to the
cutting position. Press the spool retainer while
pulling the thread or threads, to advance it to
advance manually to verify the correct assembly
of the thread head.
7. Position the retainer and make sure that the
ends of each wire protrude approximately 6 in.
(152 mm) of each slot.
FUEL TANK CAP SERVICE
A breather passage is incorporated in the tank
cap. If the breather passage is clogged, the fuel
will not flow into the carburetor, causing prob-
lems with starting or running the engine.
At the same time, make sure that the base of
the breather assembly is fitted firmly into the
groove inside the tank cap as shown below.
AIR CLEANER SERVICE
Clean the air cleaner element every 20 hours.
• Remove the air cleaner cap from the air clean-
er case by removing the air cleaner cap screw.
• Remove the element from the air cleaner case.
• Wash the element in detergent and water, and
dry it thoroughly.
• Reinstall the element in the air cleaner case
and reinstall the air cleaner, and tighten the
screw.
NOTE: improper element cleaning can result in
engine damage. Do not use compressed air to
clean or dry element. Always clean element with
an approved high flash point solvent only. Never
use gasoline. Do not operate engine with air fil-
ter parts removed.
FUEL FILTER SERVICE
Every 20 hours of operation.
• Pull the fuel filter out from the fuel tank.
• Clean the fuel filter
in a bath of high flash-
point solvent.
• Dry the fuel filter and
reinstall it into the fuel
tank.
NOTE: if a fuel still does not flow well after the
cleaning, replace the fuel filter with new one.
IMPORTANT: many solvents are highly flam-
mable and may cause serious burns. Improper
use of solvents can result in fire or an explosion.
Do not use gasoline or low flash-point solvents
to clean the fuel filter. Clean only in a well-venti-
lated area away from sources of sparks or flame,
including any appliances with a pilot light.
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