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nylon cutting head.
– Before operation, always check for clogging of the cooling air passage and the cylinder fins.
Clean them if necessary.
– Perform the following work daily after use:
• Clean the brush cutter externally and inspect for damage.
• Clean the air filter. When working under extremely dusty conditions, clean the filter the several time a day.
• Check the blade or the nylon cutting head for damage and make sure it is firmly mounted.
• Check that there is sufficient difference between idling and engagement speed to ensure that the cutting tool is at a standstill while the
engine is idling (if necessary, reduce idling speed).
• If under idling conditions the tool should still continue to run, consult your nearest Authorized Service Agent.
– Check the functioning of the I-O switch, the lock-off lever, the control lever, and the look button.
Cleaning of air cleaner
– Open the air cleaner cover(1).
– Remove foam components (2) and in the warm water wash, and then completely dry.
– Close the air cleaner cover(1).
NOTE: If there is excessive dust or dirt adhering to the air cleaner, clean it every day.
A clogged air cleaner may make it difficult or impossible to start or run the engine at proper
rotational speeds.
Checking the spark plug
– Only use the supplied universal wrench to remove or to install the spark plug.
– The gap between the two electrodes of the spark plug should be 0.6 - 0.7mm(0.024" -
0.028"). If the gap is too wide or too narrow, adjust it. If the spark plug is clogged with carbon
or fouled, clean it thoroughly or replace it.
CAUTION: Never touch the spark plug connector while the engine is running
(danger of high voltage electric shock).
Supply of grease to gear case
– Supply grease (Shell Alvania 3 or equivalent) to the gear case through the grease hole
every 30 hours.
Suction head in the fuel tank
– The felt filler of the suction head is used to filler the fuel required by the carburetor.
– A periodical visual inspection of the felt filler is to be conducted. For that purpose open the tank cap, use a wire
hook and pull out the suction head through the tank opening. Filters found to have hardened, been polluted or
clogged up are to be replaced.
– Insufficient fuel supply can result in the admissible maximum speed being exceeded. It is therefore important to
replace the felt filler at least quarterly to ensure satisfactory fuel supply to the carburetor.
Antivibration elements
Four antivibration elements (arrows) are installed between the powerhead and the drive tube. Have the system
checked
if there is a noticeable increase in vibrations. Both vibration gaps (arrows) are preset to the same width at the
factory. If the size of the two vibration gaps varies greatly and/or one of them closes
up, have your servicing dealer repair the antivibration system.
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