769. Maintenance (EX-BC only)English■ REFILLING TRIMMING LINE (MA1)1. For replacement line, use a diameter of .095in(2.4mm). The spool is capable for a line upto 20ft(6m) on the 4” head. Avoid using a larger line as itmay cut down the trimming performance.For safety reasons, do not use metalreinforcedline.2. Pinch the slotted area on the both sides of the spoolhousing to unhook the bottom cap.3. Take out the spool and pull off the old line. Fold newline so that one half line is 4.7in.(12cm) shorter thananother half. And then, hook bended end in the slotof the spool.4. Wind up the line in the correct direction as indicatedon the spool.5. Hook each end of the line in the slot on the edge ofthe spool, and then put the ends through the eyeletson the housing. Make sure that the spring and thewashers are in place.6. While holding the spool against the housing, pull theline ends to release them from the slot.7. Line up the slot on the bottom cap with the hook onthe housing, press the cap against the housing untilit clicks.■ GEAR CASE (MA2)• The reduction gears are lubricated by multipurpose,lithium-based grease in the gear case. Supply newgrease every 25 hours of use or more oftendepending on the job condition.• Remove the side bolt in gearcase opposite of greasenipple before installing new grease to arrange for oldgrease to exit.WARNINGBC-EX2MA1BC-EX2MA2