9. Maintenance
MA10
MA11
become overheated, and that this in turn could cause the brushcutter to catch on fire. Always make sure that the muffler is clean and free of wood chips, leaves, and other waste before use.
•Check the intake air cooling vent and the area around the cylinder cooling fins after every 25 hours of use for blockage, and remove any waste which has attached itself to the brushcutter. Note that it is necessary to remove the plug guard shown in Figure 20 in order to be able to view the upper part of the cylinder.
IMPORTANT
•If waste gets stuck and causes blockage around the intake air cooling vent or between the cylinder fins, it may cause the engine to overheat, and that in turn may cause mechanical failure on the part of the brushcutter. (MA10)
(1)Cylinder fin
(2)Intake air cooling vent (back)
■PROCEDURES TO BE PERFORMED AFTER EVERY 100 HOURS OF USE
1.Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon buildup. Wipe away any carbon buildup on the muffler exhaust vent at the same time. (MA11)
(1)Screwdriver
(2)Muffler
2.Tighten all screws, bolts, and fittings.
3.Check to see if any oil or grease has worked its way in between the clutch lining and drum, and if it has wipe it away using
