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• 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.
Tightning torque: 9.8~11.8N.m. (1.0~1.2kgm))
■ GEAR CASE
• The reduction gears are lubricated by multipurpose,
lithium-based grease in the gear case. Supply new
grease every 25 hours of use or more often
depending on the job condition.
• Remove the bolt opposit to the grease nipple before
installing new grease to arrange for old grease to exit.
(1) Bolt
(2) Grease nipple
■ INTAKE AIR COOLING VENT
• Never touch the cylinder, muffler, or spark plugs
with your bare hands immediately after stopping
the engine. The engine can become very hot
when in operation, and doing so could result in
severe burns.
• When checking the machine to make sure that it is
okay before using it, check the area around the
muffler and remove any wood chips or leaves
which have attached themselves to the
brushcutter. Failing to do so could cause the
muffler to become overheated and that in turn
WARNING
IMPORTANT
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.
(1) Air filter
■ FUEL FILTER
When the engine runs short of fuel supply, check the
fuel cap and the fuel filter for blockage.
(1) Fuel filter
■ SPARK PLUG
Starting failure and misfiring 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 ZENOAH.
REPLACEMENT PLUG IS A NGK BPMR7A.
WARNING
8. Maintenance
0.6~0.7mm
MA3
MA2
MA1
MA4
(1)
(2)
MA5