14
Air must flow freely around and through the cylinder
cooling fins to prevent engine overheating. Leaves,
grass, dirt and debris buildup on the fins will increase
the operating temperature of the engine, which can
reduce engine performance and shorten engine life.
Cooling Fin Cleaning
1.
With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover
(Fig. 6).
2.
Loosen the knob and lift off the cylinder cover
(Fig. 6).
3.
Clean all dirt and debris from the cooling fins
and from around the cylinder base.
4.
Reinstall the cylinder and air cleaner covers
(Fig. 6).
Spark Arrester
POTENTIAL HAZARD
•
Muffler surface becomes hot when
Brushcutter is in operation and remains
hot for some time after the engine is shut
off.
WHAT CAN HAPPEN
•
Contact with hot muffler surfaces could
cause a burn.
HOW TO AVOID THE HAZARD
•
Make sure the muffler is cool before
inspecting and cleaning the spark arrester.
Maintenance Interval
•
The spark arrester should be inspected and
cleaned after every 25 hours of use.
•
Replace the screen if it cannot be thoroughly
cleaned, or if it is damaged.
Spark Arrester Maintenance
1.
With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover
(Fig. 6).
2.
Loosen the knob and lift off the cylinder cover
(Fig. 6).
3.
Remove the two socket head screws holding the
spark arrester assembly to the muffler (Fig. 23).
4.
Remove and clean the tail, gasket and spark
arrester with a safety solvent and a stiff brush. If
any part cannot be thoroughly cleaned, it must
be replaced.
5.
Reinstall the spark arrester, gasket and tail onto
the muffler, then reinstall and tighten the two
socket head screws (Fig. 23).
6.
Reinstall the cylinder and air cleaner covers
(Fig. 6).
Exhaust Muffler
Maintenance Interval
The muffler should be inspected and cleaned after
each 100 hours of use.
Muffler Maintenance
1.
With the engine at ambient (room) temperature,
loosen the knob and remove the air cleaner cover
(Fig. 6).
2.
Loosen the knob and lift off the cylinder cover
(Fig. 6).
3.
Remove the two socket head screws holding the
spark arrester assembly to the muffler and
remove the tail, gasket and spark arrester
(Fig. 23).
4.
Remove the three socket head screws holding the
muffler cover to the muffler body and remove
the muffler cover (Fig. 23).
5.
Clean the muffler body and cover with a safety
solvent and a stiff brush (Fig. 23).
