US-15
HEZ2450S/HEZ3050S
U
S
• Make sure that the engine has
stopped and is cool before
performing any service to the
machine. Contact with moving
cutting head or hot muffler may
result in a personal injury.
■
AIR FILTER
• The air filter, if clogged, will reduce the
engine performance. Check and clean
the filter element. If the element is
broken or clogged, replace with a new
one. (MA1)
(1) air filter
■
FUEL FILTER
• When the engine runs short of fuel
supply, check the fuel cap and the fuel
filter for blockage. (MA2)
(1) fuel filter
■
SPARK PLUG
• Starting failure and mis-firing are often
caused by a fouled spark plug. Clean
the spark plug and check that the plug
gap is in the correct range. For a
replacement plug, use the correct type
specified by RedMax. (MA3)
HEZ2450S: NGK CMR7H
HEZ3050S: NGK CMR7H
• Note that using any spark plug other
than those designated may result in the
engine failing to operate properly or in
the engine becoming overheated and
damaged.
• To install the spark plug, first turn the
plug until it is finger tight, then tighten it
a quarter turn more with a socket
wrench.
TIGHTENING TORQUE:
87~104 in-lbs
(9.8~11.8 N.m.)
IMPORTANT
WARNING
.025 in
0.655mm
MA3
(1)
MA4
9. Maintenance
(1)
MA1
(1)
MA2
■
MUFFLER
• Inspect periodically, the muffler for
loose fasteners, any damage or
corrosion. If any sign of exhaust
leakage is found, stop using the
machine and have it repaired
immediately.
• Note that failing to do so may result
in the engine catching on fire.
■
SPARK ARRESTER
• The muffler is equipped with a spark
arrester to prevent red hot carbon from
flying out of the exhaust outlet.
Periodically inspect and clean as
necessary with a wire brush.
In the State of California it is required
by law (Section 4442 of the California
Public Resources Code) to equip a
spark arrester when a gas powered tool
is used in any forest covered, brush
covered, or grass covered unimproved
land. (MA4)
(1) spark arrester
■
GEAR CASE
• The reduction gears are lubricated by
multipurpose, lithium-based grease in
the gear case. At every 25 hours of
use, supply the gear case with new
grease. (MA5)
• Remove the cutter holders before
installing new grease to arrange for old
grease to exit. (MA6)
• When removing and installing the
holder(A), use care not to allow any dirt
and dust entering in to the gear case.
(MA6)
NOTE
WARNING
MA5
