Operator's Manual

11
Cylinder Cooling Fins
Maintenance Interval
The cylinder cooling fins should be cleaned after
every 25 hours of operation, or once a week,
whichever comes first.
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 cool (ambient or room
temperature), remove the socket head screw
holding the muffler cover, then remove the
muffler cover (Fig. 11).
2. Loosen the cylinder cover screw and remove the
cylinder cover (Fig. 12).
3. Clean all dirt and debris from the cooling fins
and from around the cylinder base.
4. Reinstall the cylinder cover and the muffler
cover (Figs 11 and 12).
Spark Arrester
POTENTIAL HAZARD
• Muffler surface becomes hot when
Trimmer 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
The spark arrester is installed inside the exhaust
outlet of the muffler. One screw located on the side of
the exhaust outlet holds the spark arrester in place
(Fig. 14). To remove the spark arrester:
1. Remove the socket head screw holding the
muffler cover, then remove the muffler cover
(Fig. 11).
2. Remove the spark arrester retaining screw and
washer, then carefully withdraw the spark
arrester using a suitable pair of pliers. Do not
crush or distort the spark arrester flange during
removal (Fig. 14).
3. Clean the spark arrester with a safety solvent and
a stiff brush. If the spark arrester cannot be
thoroughly cleaned, it must be replaced.
4. Reinstall the spark arrester and muffler cover
(Figs. 11 and 14).
Lubrication: Gearcase And
Blades
The gearcase and blades should be lubricated after
each 10 hours of use.
The gearcase has a felt wick located at the blade
opening. As the Hedge Trimmer is used, the grease
within the gearcase becomes very soft. The
reciprocating blades constantly draw small amounts
of grease between the blade contact surfaces for
additional lubrication (Fig. 15).
IMPORTANT: If the gearcase is not
lubricated at the recommended intervals, a
gearcase failure will occur due to a lack of
lubrication. Gearcase failure due to improper
maintenance is not covered by warranty.