Maintenance
WARNING
•Make sure that the engine has stopped and is cool before performing any service to the trimmer. Contact with moving cutting head or hot muffler may result in a personal injury.
■AIR CLEANER
•C h e c k the air cleaner every 25 hours of use or more frequently if used under dusty conditions. A clogged air filter may increase fuel consumption while cutting down the engine power. Never operate the trimmer without the air filter or with a deformed filter element because unfiltered dusty air will quickly ruin the engine.
•CLEANING AIR FILTER:
1.Remove the air cleaner cover by pulling the tab on bottom and take out the filter element.
2.Use neutral detergent and warm water to clean the filter element. After cleaning, air dry the element completely and moisten with a small amount of motor oil.
3.Place the filter element into the air cleaner housing and press the cover against the housing until it clicks.
■FUEL FILTER
•A clogged fuel filter may cause poor acceleration of the engine. Check periodically to see if the filter is clogged with dirt. The filter can be taken out of the fueling port using a small wire hook. Disconnect the filter assembly from the fuel pipe and unhook the retainer to disassemble it. Clean the components with gasoline.
■SPARK PLUG
•The spark plug may gather carbon deposits on its firing end with reasonable use. Remove and inspect the spark plug every 25 hours and clean the electrodes as necessary with a wire brush. The spark gap should be adjusted to .025 in.
•Plug manufacturers recommend replacing the plug twice a year to avoid unexpected plug failure in a job.
REPLACEMENT PLUG IS A CHAMPION RCJ6Y OR THE EQUIVALENT, SUCH AS BOSCH WR8E OR NGK BR6S.
IMPORTANT
•Note that using any spark plugs 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.
