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9. Maintenance
English
• 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 in
warm, soapy water as required. Dry completely
before installing. If the element is broken or shrunk,
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)
HEZ2401S NGK RZ7C
HEZ2602S
NGK CMR7H
HEZ3001S
• 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
(1)
MA1
(1)
MA2
.025 in
0.655mm
MA3